1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: G4RPGReaction.cc,v 1.4 2008/05/05 21:21:55 dennis Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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28 | // |
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29 | |
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30 | #include "G4RPGReaction.hh" |
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31 | #include "Randomize.hh" |
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32 | #include <iostream> |
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33 | |
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34 | |
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35 | G4bool G4RPGReaction:: |
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36 | ReactionStage(const G4HadProjectile* /*originalIncident*/, |
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37 | G4ReactionProduct& /*modifiedOriginal*/, |
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38 | G4bool& /*incidentHasChanged*/, |
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39 | const G4DynamicParticle* /*originalTarget*/, |
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40 | G4ReactionProduct& /*targetParticle*/, |
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41 | G4bool& /*targetHasChanged*/, |
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42 | const G4Nucleus& /*targetNucleus*/, |
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43 | G4ReactionProduct& /*currentParticle*/, |
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44 | G4FastVector<G4ReactionProduct,256>& /*vec*/, |
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45 | G4int& /*vecLen*/, |
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46 | G4bool /*leadFlag*/, |
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47 | G4ReactionProduct& /*leadingStrangeParticle*/) |
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48 | { |
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49 | G4cout << " G4RPGReactionStage must be overridden in a derived class " |
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50 | << G4endl; |
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51 | return false; |
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52 | } |
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53 | |
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54 | |
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55 | void G4RPGReaction:: |
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56 | AddBlackTrackParticles(const G4double epnb, // GeV |
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57 | const G4int npnb, |
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58 | const G4double edta, // GeV |
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59 | const G4int ndta, |
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60 | const G4ReactionProduct& modifiedOriginal, |
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61 | G4int PinNucleus, |
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62 | G4int NinNucleus, |
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63 | const G4Nucleus& targetNucleus, |
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64 | G4FastVector<G4ReactionProduct,256>& vec, |
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65 | G4int& vecLen) |
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66 | { |
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67 | // derived from original FORTRAN code in GENXPT and TWOCLU by H. Fesefeldt |
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68 | // |
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69 | // npnb is number of proton/neutron black track particles |
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70 | // ndta is the number of deuterons, tritons, and alphas produced |
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71 | // epnb is the kinetic energy available for proton/neutron black track particles |
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72 | // edta is the kinetic energy available for deuteron/triton/alpha particles |
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73 | |
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74 | G4ParticleDefinition* aProton = G4Proton::Proton(); |
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75 | G4ParticleDefinition* aNeutron = G4Neutron::Neutron(); |
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76 | G4ParticleDefinition* aDeuteron = G4Deuteron::Deuteron(); |
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77 | G4ParticleDefinition* aTriton = G4Triton::Triton(); |
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78 | G4ParticleDefinition* anAlpha = G4Alpha::Alpha(); |
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79 | |
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80 | const G4double ekOriginal = modifiedOriginal.GetKineticEnergy()/MeV; |
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81 | const G4double atomicWeight = targetNucleus.GetN(); |
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82 | const G4double atomicNumber = targetNucleus.GetZ(); |
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83 | |
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84 | const G4double ika1 = 3.6; |
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85 | const G4double ika2 = 35.56; |
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86 | const G4double ika3 = 6.45; |
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87 | |
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88 | G4int i; |
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89 | G4double pp; |
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90 | G4double kinetic = 0; |
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91 | G4double kinCreated = 0; |
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92 | // G4double cfa = 0.025*((atomicWeight-1.0)/120.0) * std::exp(-(atomicWeight-1.0)/120.0); |
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93 | G4double remainingE = 0; |
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94 | |
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95 | // First add protons and neutrons to final state |
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96 | if (npnb > 0) { |
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97 | // G4double backwardKinetic = 0.0; |
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98 | G4int local_npnb = npnb; |
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99 | // DHW: does not conserve energy for (i = 0; i < npnb; ++i) if (G4UniformRand() < sprob) local_npnb--; |
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100 | local_npnb = std::min(PinNucleus + NinNucleus , local_npnb); |
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101 | G4double local_epnb = epnb; |
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102 | if (ndta == 0) local_epnb += edta; // Retrieve unused kinetic energy |
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103 | // G4double ekin = local_epnb/std::max(1,local_npnb); |
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104 | |
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105 | remainingE = local_epnb; |
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106 | for (i = 0; i < local_npnb; ++i) |
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107 | { |
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108 | G4ReactionProduct* p1 = new G4ReactionProduct(); |
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109 | // if( backwardKinetic > local_epnb ) { |
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110 | // delete p1; |
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111 | // break; |
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112 | // } |
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113 | |
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114 | // G4double ran = G4UniformRand(); |
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115 | // G4double kinetic = -ekin*std::log(ran) - cfa*(1.0+0.5*normal()); |
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116 | // if( kinetic < 0.0 )kinetic = -0.010*std::log(ran); |
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117 | // backwardKinetic += kinetic; |
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118 | // if( backwardKinetic > local_epnb ) |
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119 | // kinetic = std::max( kineticMinimum, local_epnb-(backwardKinetic-kinetic) ); |
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120 | |
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121 | if (G4UniformRand() > (1.0-atomicNumber/atomicWeight)) { |
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122 | |
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123 | // Boil off a proton if there are any left, otherwise a neutron |
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124 | |
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125 | if (PinNucleus > 0) { |
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126 | p1->SetDefinition( aProton ); |
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127 | PinNucleus--; |
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128 | } else { |
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129 | p1->SetDefinition( aNeutron ); |
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130 | NinNucleus--; |
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131 | // } else { |
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132 | // delete p1; |
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133 | // break; // no nucleons left in nucleus |
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134 | } |
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135 | } else { |
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136 | |
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137 | // Boil off a neutron if there are any left, otherwise a proton |
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138 | |
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139 | if (NinNucleus > 0) { |
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140 | p1->SetDefinition( aNeutron ); |
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141 | NinNucleus--; |
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142 | } else { |
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143 | p1->SetDefinition( aProton ); |
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144 | PinNucleus--; |
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145 | // } else { |
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146 | // delete p1; |
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147 | // break; // no nucleons left in nucleus |
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148 | } |
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149 | } |
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150 | |
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151 | if (i < local_npnb - 1) { |
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152 | kinetic = remainingE*G4UniformRand(); |
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153 | remainingE -= kinetic; |
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154 | } else { |
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155 | kinetic = remainingE; |
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156 | } |
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157 | |
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158 | vec.SetElement( vecLen, p1 ); |
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159 | G4double cost = G4UniformRand() * 2.0 - 1.0; |
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160 | G4double sint = std::sqrt(std::fabs(1.0-cost*cost)); |
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161 | G4double phi = twopi * G4UniformRand(); |
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162 | vec[vecLen]->SetNewlyAdded( true ); |
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163 | vec[vecLen]->SetKineticEnergy( kinetic*GeV ); |
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164 | kinCreated+=kinetic; |
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165 | pp = vec[vecLen]->GetTotalMomentum(); |
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166 | vec[vecLen]->SetMomentum(pp*sint*std::sin(phi), |
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167 | pp*sint*std::cos(phi), |
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168 | pp*cost ); |
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169 | vecLen++; |
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170 | } |
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171 | |
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172 | if (NinNucleus > 0) { |
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173 | if( (atomicWeight >= 10.0) && (ekOriginal <= 2.0*GeV) ) |
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174 | { |
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175 | G4double ekw = ekOriginal/GeV; |
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176 | G4int ika, kk = 0; |
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177 | if( ekw > 1.0 )ekw *= ekw; |
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178 | ekw = std::max( 0.1, ekw ); |
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179 | ika = G4int(ika1*std::exp((atomicNumber*atomicNumber/ |
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180 | atomicWeight-ika2)/ika3)/ekw); |
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181 | if( ika > 0 ) |
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182 | { |
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183 | for( i=(vecLen-1); i>=0; --i ) |
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184 | { |
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185 | if( (vec[i]->GetDefinition() == aProton) && vec[i]->GetNewlyAdded() ) |
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186 | { |
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187 | vec[i]->SetDefinitionAndUpdateE( aNeutron ); // modified 22-Oct-97 |
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188 | PinNucleus++; |
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189 | NinNucleus--; |
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190 | if( ++kk > ika )break; |
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191 | } |
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192 | } |
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193 | } |
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194 | } |
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195 | } // if (NinNucleus >0) |
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196 | } // if (npnb > 0) |
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197 | |
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198 | // Next try to add deuterons, tritons and alphas to final state |
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199 | |
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200 | G4double ran = 0; |
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201 | if (ndta > 0) { |
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202 | // G4double backwardKinetic = 0.0; |
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203 | G4int local_ndta=ndta; |
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204 | // DHW: does not conserve energy for (i = 0; i < ndta; ++i) if (G4UniformRand() < sprob) local_ndta--; |
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205 | G4double local_edta = edta; |
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206 | if (npnb == 0) local_edta += epnb; // Retrieve unused kinetic energy |
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207 | // G4double ekin = local_edta/std::max(1,local_ndta); |
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208 | |
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209 | remainingE = local_edta; |
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210 | for (i = 0; i < local_ndta; ++i) { |
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211 | G4ReactionProduct* p2 = new G4ReactionProduct(); |
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212 | // if( backwardKinetic > local_edta ) { |
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213 | // delete p2; |
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214 | // break; |
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215 | // } |
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216 | |
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217 | // G4double ran = G4UniformRand(); |
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218 | // G4double kinetic = -ekin*std::log(ran)-cfa*(1.+0.5*normal()); |
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219 | // if( kinetic < 0.0 )kinetic = kineticFactor*std::log(ran); |
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220 | // backwardKinetic += kinetic; |
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221 | // if( backwardKinetic > local_edta )kinetic = local_edta-(backwardKinetic-kinetic); |
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222 | // if( kinetic < 0.0 )kinetic = kineticMinimum; |
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223 | |
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224 | ran = G4UniformRand(); |
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225 | if (ran < 0.60) { |
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226 | if (PinNucleus > 0 && NinNucleus > 0) { |
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227 | p2->SetDefinition( aDeuteron ); |
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228 | PinNucleus--; |
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229 | NinNucleus--; |
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230 | } else if (NinNucleus > 0) { |
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231 | p2->SetDefinition( aNeutron ); |
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232 | NinNucleus--; |
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233 | } else if (PinNucleus > 0) { |
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234 | p2->SetDefinition( aProton ); |
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235 | PinNucleus--; |
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236 | } else { |
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237 | delete p2; |
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238 | break; |
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239 | } |
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240 | } else if (ran < 0.90) { |
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241 | if (PinNucleus > 0 && NinNucleus > 1) { |
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242 | p2->SetDefinition( aTriton ); |
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243 | PinNucleus--; |
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244 | NinNucleus -= 2; |
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245 | } else if (PinNucleus > 0 && NinNucleus > 0) { |
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246 | p2->SetDefinition( aDeuteron ); |
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247 | PinNucleus--; |
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248 | NinNucleus--; |
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249 | } else if (NinNucleus > 0) { |
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250 | p2->SetDefinition( aNeutron ); |
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251 | NinNucleus--; |
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252 | } else if (PinNucleus > 0) { |
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253 | p2->SetDefinition( aProton ); |
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254 | PinNucleus--; |
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255 | } else { |
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256 | delete p2; |
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257 | break; |
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258 | } |
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259 | } else { |
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260 | if (PinNucleus > 1 && NinNucleus > 1) { |
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261 | p2->SetDefinition( anAlpha ); |
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262 | PinNucleus -= 2; |
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263 | NinNucleus -= 2; |
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264 | } else if (PinNucleus > 0 && NinNucleus > 1) { |
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265 | p2->SetDefinition( aTriton ); |
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266 | PinNucleus--; |
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267 | NinNucleus -= 2; |
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268 | } else if (PinNucleus > 0 && NinNucleus > 0) { |
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269 | p2->SetDefinition( aDeuteron ); |
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270 | PinNucleus--; |
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271 | NinNucleus--; |
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272 | } else if (NinNucleus > 0) { |
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273 | p2->SetDefinition( aNeutron ); |
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274 | NinNucleus--; |
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275 | } else if (PinNucleus > 0) { |
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276 | p2->SetDefinition( aProton ); |
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277 | PinNucleus--; |
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278 | } else { |
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279 | delete p2; |
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280 | break; |
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281 | } |
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282 | } |
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283 | |
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284 | if (i < local_ndta - 1) { |
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285 | kinetic = remainingE*G4UniformRand(); |
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286 | remainingE -= kinetic; |
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287 | } else { |
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288 | kinetic = remainingE; |
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289 | } |
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290 | |
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291 | vec.SetElement( vecLen, p2 ); |
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292 | G4double cost = 2.0*G4UniformRand() - 1.0; |
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293 | G4double sint = std::sqrt(std::max(0.0,(1.0-cost*cost))); |
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294 | G4double phi = twopi*G4UniformRand(); |
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295 | vec[vecLen]->SetNewlyAdded( true ); |
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296 | vec[vecLen]->SetKineticEnergy( kinetic*GeV ); |
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297 | kinCreated+=kinetic; |
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298 | |
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299 | pp = vec[vecLen]->GetTotalMomentum(); |
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300 | vec[vecLen]->SetMomentum( pp*sint*std::sin(phi), |
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301 | pp*sint*std::cos(phi), |
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302 | pp*cost ); |
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303 | vecLen++; |
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304 | } |
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305 | } // if (ndta > 0) |
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306 | } |
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307 | |
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308 | |
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309 | G4double |
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310 | G4RPGReaction::GenerateNBodyEvent(const G4double totalEnergy, // MeV |
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311 | const G4bool constantCrossSection, |
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312 | G4FastVector<G4ReactionProduct,256>& vec, |
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313 | G4int &vecLen) |
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314 | { |
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315 | G4int i; |
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316 | const G4double expxu = 82.; // upper bound for arg. of exp |
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317 | const G4double expxl = -expxu; // lower bound for arg. of exp |
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318 | |
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319 | if (vecLen < 2) { |
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320 | G4cerr << "*** Error in G4RPGReaction::GenerateNBodyEvent" << G4endl; |
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321 | G4cerr << " number of particles < 2" << G4endl; |
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322 | G4cerr << "totalEnergy = " << totalEnergy << "MeV, vecLen = " << vecLen << G4endl; |
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323 | return -1.0; |
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324 | } |
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325 | |
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326 | G4double mass[18]; // mass of each particle |
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327 | G4double energy[18]; // total energy of each particle |
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328 | G4double pcm[3][18]; // pcm is an array with 3 rows and vecLen columns |
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329 | |
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330 | G4double totalMass = 0.0; |
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331 | G4double extraMass = 0; |
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332 | G4double sm[18]; |
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333 | |
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334 | for (i=0; i<vecLen; ++i) { |
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335 | mass[i] = vec[i]->GetMass()/GeV; |
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336 | if(vec[i]->GetSide() == -2) extraMass+=vec[i]->GetMass()/GeV; |
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337 | vec[i]->SetMomentum( 0.0, 0.0, 0.0 ); |
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338 | pcm[0][i] = 0.0; // x-momentum of i-th particle |
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339 | pcm[1][i] = 0.0; // y-momentum of i-th particle |
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340 | pcm[2][i] = 0.0; // z-momentum of i-th particle |
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341 | energy[i] = mass[i]; // total energy of i-th particle |
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342 | totalMass += mass[i]; |
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343 | sm[i] = totalMass; |
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344 | } |
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345 | |
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346 | G4double totalE = totalEnergy/GeV; |
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347 | if (totalMass > totalE) { |
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348 | //G4cerr << "*** Error in G4RPGReaction::GenerateNBodyEvent" << G4endl; |
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349 | //G4cerr << " total mass (" << totalMass*GeV << "MeV) > total energy (" |
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350 | // << totalEnergy << "MeV)" << G4endl; |
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351 | totalE = totalMass; |
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352 | return -1.0; |
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353 | } |
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354 | |
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355 | G4double kineticEnergy = totalE - totalMass; |
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356 | G4double emm[18]; |
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357 | emm[0] = mass[0]; |
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358 | emm[vecLen-1] = totalE; |
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359 | |
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360 | if (vecLen > 2) { // the random numbers are sorted |
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361 | G4double ran[18]; |
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362 | for( i=0; i<vecLen; ++i )ran[i] = G4UniformRand(); |
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363 | for (i=0; i<vecLen-2; ++i) { |
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364 | for (G4int j=vecLen-2; j>i; --j) { |
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365 | if (ran[i] > ran[j]) { |
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366 | G4double temp = ran[i]; |
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367 | ran[i] = ran[j]; |
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368 | ran[j] = temp; |
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369 | } |
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370 | } |
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371 | } |
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372 | for( i=1; i<vecLen-1; ++i )emm[i] = ran[i-1]*kineticEnergy + sm[i]; |
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373 | } |
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374 | |
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375 | // Weight is the sum of logarithms of terms instead of the product of terms |
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376 | |
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377 | G4bool lzero = true; |
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378 | G4double wtmax = 0.0; |
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379 | if (constantCrossSection) { |
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380 | G4double emmax = kineticEnergy + mass[0]; |
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381 | G4double emmin = 0.0; |
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382 | for( i=1; i<vecLen; ++i ) |
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383 | { |
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384 | emmin += mass[i-1]; |
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385 | emmax += mass[i]; |
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386 | G4double wtfc = 0.0; |
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387 | if( emmax*emmax > 0.0 ) |
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388 | { |
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389 | G4double arg = emmax*emmax |
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390 | + (emmin*emmin-mass[i]*mass[i])*(emmin*emmin-mass[i]*mass[i])/(emmax*emmax) |
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391 | - 2.0*(emmin*emmin+mass[i]*mass[i]); |
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392 | if( arg > 0.0 )wtfc = 0.5*std::sqrt( arg ); |
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393 | } |
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394 | if( wtfc == 0.0 ) |
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395 | { |
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396 | lzero = false; |
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397 | break; |
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398 | } |
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399 | wtmax += std::log( wtfc ); |
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400 | } |
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401 | if( lzero ) |
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402 | wtmax = -wtmax; |
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403 | else |
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404 | wtmax = expxu; |
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405 | } else { |
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406 | // ffq(n) = pi*(2*pi)^(n-2)/(n-2)! |
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407 | const G4double ffq[18] = { 0., 3.141592, 19.73921, 62.01255, 129.8788, 204.0131, |
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408 | 256.3704, 268.4705, 240.9780, 189.2637, |
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409 | 132.1308, 83.0202, 47.4210, 24.8295, |
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410 | 12.0006, 5.3858, 2.2560, 0.8859 }; |
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411 | wtmax = std::log( std::pow( kineticEnergy, vecLen-2 ) * ffq[vecLen-1] / totalE ); |
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412 | } |
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413 | |
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414 | // Calculate momenta for secondaries |
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415 | |
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416 | lzero = true; |
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417 | G4double pd[50]; |
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418 | |
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419 | for( i=0; i<vecLen-1; ++i ) |
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420 | { |
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421 | pd[i] = 0.0; |
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422 | if( emm[i+1]*emm[i+1] > 0.0 ) |
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423 | { |
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424 | G4double arg = emm[i+1]*emm[i+1] |
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425 | + (emm[i]*emm[i]-mass[i+1]*mass[i+1])*(emm[i]*emm[i]-mass[i+1]*mass[i+1]) |
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426 | /(emm[i+1]*emm[i+1]) |
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427 | - 2.0*(emm[i]*emm[i]+mass[i+1]*mass[i+1]); |
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428 | if( arg > 0.0 )pd[i] = 0.5*std::sqrt( arg ); |
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429 | } |
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430 | if( pd[i] <= 0.0 ) // changed from == on 02 April 98 |
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431 | lzero = false; |
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432 | else |
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433 | wtmax += std::log( pd[i] ); |
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434 | } |
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435 | G4double weight = 0.0; // weight is returned by GenerateNBodyEvent |
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436 | if( lzero )weight = std::exp( std::max(std::min(wtmax,expxu),expxl) ); |
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437 | |
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438 | G4double bang, cb, sb, s0, s1, s2, c, s, esys, a, b, gama, beta; |
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439 | pcm[0][0] = 0.0; |
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440 | pcm[1][0] = pd[0]; |
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441 | pcm[2][0] = 0.0; |
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442 | for( i=1; i<vecLen; ++i ) |
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443 | { |
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444 | pcm[0][i] = 0.0; |
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445 | pcm[1][i] = -pd[i-1]; |
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446 | pcm[2][i] = 0.0; |
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447 | bang = twopi*G4UniformRand(); |
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448 | cb = std::cos(bang); |
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449 | sb = std::sin(bang); |
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450 | c = 2.0*G4UniformRand() - 1.0; |
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451 | s = std::sqrt( std::fabs( 1.0-c*c ) ); |
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452 | if( i < vecLen-1 ) |
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453 | { |
---|
454 | esys = std::sqrt(pd[i]*pd[i] + emm[i]*emm[i]); |
---|
455 | beta = pd[i]/esys; |
---|
456 | gama = esys/emm[i]; |
---|
457 | for( G4int j=0; j<=i; ++j ) |
---|
458 | { |
---|
459 | s0 = pcm[0][j]; |
---|
460 | s1 = pcm[1][j]; |
---|
461 | s2 = pcm[2][j]; |
---|
462 | energy[j] = std::sqrt( s0*s0 + s1*s1 + s2*s2 + mass[j]*mass[j] ); |
---|
463 | a = s0*c - s1*s; // rotation |
---|
464 | pcm[1][j] = s0*s + s1*c; |
---|
465 | b = pcm[2][j]; |
---|
466 | pcm[0][j] = a*cb - b*sb; |
---|
467 | pcm[2][j] = a*sb + b*cb; |
---|
468 | pcm[1][j] = gama*(pcm[1][j] + beta*energy[j]); |
---|
469 | } |
---|
470 | } |
---|
471 | else |
---|
472 | { |
---|
473 | for( G4int j=0; j<=i; ++j ) |
---|
474 | { |
---|
475 | s0 = pcm[0][j]; |
---|
476 | s1 = pcm[1][j]; |
---|
477 | s2 = pcm[2][j]; |
---|
478 | energy[j] = std::sqrt( s0*s0 + s1*s1 + s2*s2 + mass[j]*mass[j] ); |
---|
479 | a = s0*c - s1*s; // rotation |
---|
480 | pcm[1][j] = s0*s + s1*c; |
---|
481 | b = pcm[2][j]; |
---|
482 | pcm[0][j] = a*cb - b*sb; |
---|
483 | pcm[2][j] = a*sb + b*cb; |
---|
484 | } |
---|
485 | } |
---|
486 | } |
---|
487 | |
---|
488 | for (i=0; i<vecLen; ++i) { |
---|
489 | vec[i]->SetMomentum( pcm[0][i]*GeV, pcm[1][i]*GeV, pcm[2][i]*GeV ); |
---|
490 | vec[i]->SetTotalEnergy( energy[i]*GeV ); |
---|
491 | } |
---|
492 | |
---|
493 | return weight; |
---|
494 | } |
---|
495 | |
---|
496 | |
---|
497 | G4double |
---|
498 | G4RPGReaction::GenerateNBodyEventT(const G4double totalEnergy, |
---|
499 | const G4bool constantCrossSection, |
---|
500 | std::vector<G4ReactionProduct*>& tempList) |
---|
501 | { |
---|
502 | G4int i; |
---|
503 | const G4double expxu = 82.; // upper bound for arg. of exp |
---|
504 | const G4double expxl = -expxu; // lower bound for arg. of exp |
---|
505 | G4int listLen = tempList.size(); |
---|
506 | |
---|
507 | if (listLen < 2) { |
---|
508 | G4cerr << "*** Error in G4RPGReaction::GenerateNBodyEvent" << G4endl; |
---|
509 | G4cerr << " number of particles < 2" << G4endl; |
---|
510 | G4cerr << "totalEnergy = " << totalEnergy << "MeV, listLen = " << listLen << G4endl; |
---|
511 | return -1.0; |
---|
512 | } |
---|
513 | |
---|
514 | G4double mass[18]; // mass of each particle |
---|
515 | G4double energy[18]; // total energy of each particle |
---|
516 | G4double pcm[3][18]; // pcm is an array with 3 rows and listLen columns |
---|
517 | |
---|
518 | G4double totalMass = 0.0; |
---|
519 | G4double extraMass = 0; |
---|
520 | G4double sm[18]; |
---|
521 | |
---|
522 | for (i=0; i<listLen; ++i) { |
---|
523 | mass[i] = tempList[i]->GetMass()/GeV; |
---|
524 | if(tempList[i]->GetSide() == -2) extraMass+=tempList[i]->GetMass()/GeV; |
---|
525 | tempList[i]->SetMomentum( 0.0, 0.0, 0.0 ); |
---|
526 | pcm[0][i] = 0.0; // x-momentum of i-th particle |
---|
527 | pcm[1][i] = 0.0; // y-momentum of i-th particle |
---|
528 | pcm[2][i] = 0.0; // z-momentum of i-th particle |
---|
529 | energy[i] = mass[i]; // total energy of i-th particle |
---|
530 | totalMass += mass[i]; |
---|
531 | sm[i] = totalMass; |
---|
532 | } |
---|
533 | |
---|
534 | G4double totalE = totalEnergy/GeV; |
---|
535 | if (totalMass > totalE) { |
---|
536 | totalE = totalMass; |
---|
537 | return -1.0; |
---|
538 | } |
---|
539 | |
---|
540 | G4double kineticEnergy = totalE - totalMass; |
---|
541 | G4double emm[18]; |
---|
542 | emm[0] = mass[0]; |
---|
543 | emm[listLen-1] = totalE; |
---|
544 | |
---|
545 | if (listLen > 2) { // the random numbers are sorted |
---|
546 | G4double ran[18]; |
---|
547 | for( i=0; i<listLen; ++i )ran[i] = G4UniformRand(); |
---|
548 | for (i=0; i<listLen-2; ++i) { |
---|
549 | for (G4int j=listLen-2; j>i; --j) { |
---|
550 | if (ran[i] > ran[j]) { |
---|
551 | G4double temp = ran[i]; |
---|
552 | ran[i] = ran[j]; |
---|
553 | ran[j] = temp; |
---|
554 | } |
---|
555 | } |
---|
556 | } |
---|
557 | for( i=1; i<listLen-1; ++i )emm[i] = ran[i-1]*kineticEnergy + sm[i]; |
---|
558 | } |
---|
559 | |
---|
560 | // Weight is the sum of logarithms of terms instead of the product of terms |
---|
561 | |
---|
562 | G4bool lzero = true; |
---|
563 | G4double wtmax = 0.0; |
---|
564 | if (constantCrossSection) { |
---|
565 | G4double emmax = kineticEnergy + mass[0]; |
---|
566 | G4double emmin = 0.0; |
---|
567 | for( i=1; i<listLen; ++i ) |
---|
568 | { |
---|
569 | emmin += mass[i-1]; |
---|
570 | emmax += mass[i]; |
---|
571 | G4double wtfc = 0.0; |
---|
572 | if( emmax*emmax > 0.0 ) |
---|
573 | { |
---|
574 | G4double arg = emmax*emmax |
---|
575 | + (emmin*emmin-mass[i]*mass[i])*(emmin*emmin-mass[i]*mass[i])/(emmax*emmax) |
---|
576 | - 2.0*(emmin*emmin+mass[i]*mass[i]); |
---|
577 | if( arg > 0.0 )wtfc = 0.5*std::sqrt( arg ); |
---|
578 | } |
---|
579 | if( wtfc == 0.0 ) |
---|
580 | { |
---|
581 | lzero = false; |
---|
582 | break; |
---|
583 | } |
---|
584 | wtmax += std::log( wtfc ); |
---|
585 | } |
---|
586 | if( lzero ) |
---|
587 | wtmax = -wtmax; |
---|
588 | else |
---|
589 | wtmax = expxu; |
---|
590 | } else { |
---|
591 | // ffq(n) = pi*(2*pi)^(n-2)/(n-2)! |
---|
592 | const G4double ffq[18] = { 0., 3.141592, 19.73921, 62.01255, 129.8788, 204.0131, |
---|
593 | 256.3704, 268.4705, 240.9780, 189.2637, |
---|
594 | 132.1308, 83.0202, 47.4210, 24.8295, |
---|
595 | 12.0006, 5.3858, 2.2560, 0.8859 }; |
---|
596 | wtmax = std::log( std::pow( kineticEnergy, listLen-2 ) * ffq[listLen-1] / totalE ); |
---|
597 | } |
---|
598 | |
---|
599 | // Calculate momenta for secondaries |
---|
600 | |
---|
601 | lzero = true; |
---|
602 | G4double pd[50]; |
---|
603 | |
---|
604 | for( i=0; i<listLen-1; ++i ) |
---|
605 | { |
---|
606 | pd[i] = 0.0; |
---|
607 | if( emm[i+1]*emm[i+1] > 0.0 ) |
---|
608 | { |
---|
609 | G4double arg = emm[i+1]*emm[i+1] |
---|
610 | + (emm[i]*emm[i]-mass[i+1]*mass[i+1])*(emm[i]*emm[i]-mass[i+1]*mass[i+1]) |
---|
611 | /(emm[i+1]*emm[i+1]) |
---|
612 | - 2.0*(emm[i]*emm[i]+mass[i+1]*mass[i+1]); |
---|
613 | if( arg > 0.0 )pd[i] = 0.5*std::sqrt( arg ); |
---|
614 | } |
---|
615 | if( pd[i] <= 0.0 ) // changed from == on 02 April 98 |
---|
616 | lzero = false; |
---|
617 | else |
---|
618 | wtmax += std::log( pd[i] ); |
---|
619 | } |
---|
620 | G4double weight = 0.0; // weight is returned by GenerateNBodyEvent |
---|
621 | if( lzero )weight = std::exp( std::max(std::min(wtmax,expxu),expxl) ); |
---|
622 | |
---|
623 | G4double bang, cb, sb, s0, s1, s2, c, s, esys, a, b, gama, beta; |
---|
624 | pcm[0][0] = 0.0; |
---|
625 | pcm[1][0] = pd[0]; |
---|
626 | pcm[2][0] = 0.0; |
---|
627 | for( i=1; i<listLen; ++i ) |
---|
628 | { |
---|
629 | pcm[0][i] = 0.0; |
---|
630 | pcm[1][i] = -pd[i-1]; |
---|
631 | pcm[2][i] = 0.0; |
---|
632 | bang = twopi*G4UniformRand(); |
---|
633 | cb = std::cos(bang); |
---|
634 | sb = std::sin(bang); |
---|
635 | c = 2.0*G4UniformRand() - 1.0; |
---|
636 | s = std::sqrt( std::fabs( 1.0-c*c ) ); |
---|
637 | if( i < listLen-1 ) |
---|
638 | { |
---|
639 | esys = std::sqrt(pd[i]*pd[i] + emm[i]*emm[i]); |
---|
640 | beta = pd[i]/esys; |
---|
641 | gama = esys/emm[i]; |
---|
642 | for( G4int j=0; j<=i; ++j ) |
---|
643 | { |
---|
644 | s0 = pcm[0][j]; |
---|
645 | s1 = pcm[1][j]; |
---|
646 | s2 = pcm[2][j]; |
---|
647 | energy[j] = std::sqrt( s0*s0 + s1*s1 + s2*s2 + mass[j]*mass[j] ); |
---|
648 | a = s0*c - s1*s; // rotation |
---|
649 | pcm[1][j] = s0*s + s1*c; |
---|
650 | b = pcm[2][j]; |
---|
651 | pcm[0][j] = a*cb - b*sb; |
---|
652 | pcm[2][j] = a*sb + b*cb; |
---|
653 | pcm[1][j] = gama*(pcm[1][j] + beta*energy[j]); |
---|
654 | } |
---|
655 | } |
---|
656 | else |
---|
657 | { |
---|
658 | for( G4int j=0; j<=i; ++j ) |
---|
659 | { |
---|
660 | s0 = pcm[0][j]; |
---|
661 | s1 = pcm[1][j]; |
---|
662 | s2 = pcm[2][j]; |
---|
663 | energy[j] = std::sqrt( s0*s0 + s1*s1 + s2*s2 + mass[j]*mass[j] ); |
---|
664 | a = s0*c - s1*s; // rotation |
---|
665 | pcm[1][j] = s0*s + s1*c; |
---|
666 | b = pcm[2][j]; |
---|
667 | pcm[0][j] = a*cb - b*sb; |
---|
668 | pcm[2][j] = a*sb + b*cb; |
---|
669 | } |
---|
670 | } |
---|
671 | } |
---|
672 | |
---|
673 | for (i=0; i<listLen; ++i) { |
---|
674 | tempList[i]->SetMomentum(pcm[0][i]*GeV, pcm[1][i]*GeV, pcm[2][i]*GeV); |
---|
675 | tempList[i]->SetTotalEnergy(energy[i]*GeV); |
---|
676 | } |
---|
677 | |
---|
678 | return weight; |
---|
679 | } |
---|
680 | |
---|
681 | |
---|
682 | G4double G4RPGReaction::normal() |
---|
683 | { |
---|
684 | G4double ran = -6.0; |
---|
685 | for( G4int i=0; i<12; ++i )ran += G4UniformRand(); |
---|
686 | return ran; |
---|
687 | } |
---|
688 | |
---|
689 | |
---|
690 | void G4RPGReaction::Defs1(const G4ReactionProduct& modifiedOriginal, |
---|
691 | G4ReactionProduct& currentParticle, |
---|
692 | G4ReactionProduct& targetParticle, |
---|
693 | G4FastVector<G4ReactionProduct,256>& vec, |
---|
694 | G4int& vecLen) |
---|
695 | { |
---|
696 | // Rotate final state particle momenta by initial particle direction |
---|
697 | |
---|
698 | const G4double pjx = modifiedOriginal.GetMomentum().x()/MeV; |
---|
699 | const G4double pjy = modifiedOriginal.GetMomentum().y()/MeV; |
---|
700 | const G4double pjz = modifiedOriginal.GetMomentum().z()/MeV; |
---|
701 | const G4double p = modifiedOriginal.GetMomentum().mag()/MeV; |
---|
702 | |
---|
703 | if (pjx*pjx+pjy*pjy > 0.0) { |
---|
704 | G4double cost, sint, ph, cosp, sinp, pix, piy, piz; |
---|
705 | cost = pjz/p; |
---|
706 | sint = std::sqrt(std::abs((1.0-cost)*(1.0+cost))); |
---|
707 | if( pjy < 0.0 ) |
---|
708 | ph = 3*halfpi; |
---|
709 | else |
---|
710 | ph = halfpi; |
---|
711 | if( std::abs( pjx ) > 0.001*MeV )ph = std::atan2(pjy,pjx); |
---|
712 | cosp = std::cos(ph); |
---|
713 | sinp = std::sin(ph); |
---|
714 | pix = currentParticle.GetMomentum().x()/MeV; |
---|
715 | piy = currentParticle.GetMomentum().y()/MeV; |
---|
716 | piz = currentParticle.GetMomentum().z()/MeV; |
---|
717 | currentParticle.SetMomentum((cost*cosp*pix - sinp*piy + sint*cosp*piz)*MeV, |
---|
718 | (cost*sinp*pix + cosp*piy + sint*sinp*piz)*MeV, |
---|
719 | (-sint*pix + cost*piz)*MeV); |
---|
720 | pix = targetParticle.GetMomentum().x()/MeV; |
---|
721 | piy = targetParticle.GetMomentum().y()/MeV; |
---|
722 | piz = targetParticle.GetMomentum().z()/MeV; |
---|
723 | targetParticle.SetMomentum((cost*cosp*pix - sinp*piy + sint*cosp*piz)*MeV, |
---|
724 | (cost*sinp*pix + cosp*piy + sint*sinp*piz)*MeV, |
---|
725 | (-sint*pix + cost*piz)*MeV); |
---|
726 | |
---|
727 | for (G4int i=0; i<vecLen; ++i) { |
---|
728 | pix = vec[i]->GetMomentum().x()/MeV; |
---|
729 | piy = vec[i]->GetMomentum().y()/MeV; |
---|
730 | piz = vec[i]->GetMomentum().z()/MeV; |
---|
731 | vec[i]->SetMomentum((cost*cosp*pix - sinp*piy + sint*cosp*piz)*MeV, |
---|
732 | (cost*sinp*pix + cosp*piy + sint*sinp*piz)*MeV, |
---|
733 | (-sint*pix + cost*piz)*MeV); |
---|
734 | } |
---|
735 | |
---|
736 | } else { |
---|
737 | if (pjz < 0.0) { |
---|
738 | currentParticle.SetMomentum( -currentParticle.GetMomentum().z() ); |
---|
739 | targetParticle.SetMomentum( -targetParticle.GetMomentum().z() ); |
---|
740 | for (G4int i=0; i<vecLen; ++i) vec[i]->SetMomentum( -vec[i]->GetMomentum().z() ); |
---|
741 | } |
---|
742 | } |
---|
743 | } |
---|
744 | |
---|
745 | |
---|
746 | void G4RPGReaction::Rotate( |
---|
747 | const G4double numberofFinalStateNucleons, |
---|
748 | const G4ThreeVector &temp, |
---|
749 | const G4ReactionProduct &modifiedOriginal, // Fermi motion & evap. effect included |
---|
750 | const G4HadProjectile *originalIncident, // original incident particle |
---|
751 | const G4Nucleus &targetNucleus, |
---|
752 | G4ReactionProduct ¤tParticle, |
---|
753 | G4ReactionProduct &targetParticle, |
---|
754 | G4FastVector<G4ReactionProduct,256> &vec, |
---|
755 | G4int &vecLen ) |
---|
756 | { |
---|
757 | // derived from original FORTRAN code in GENXPT and TWOCLU by H. Fesefeldt |
---|
758 | // |
---|
759 | // Rotate in direction of z-axis, this does disturb in some way our |
---|
760 | // inclusive distributions, but it is necessary for momentum conservation |
---|
761 | // |
---|
762 | const G4double atomicWeight = targetNucleus.GetN(); |
---|
763 | const G4double logWeight = std::log(atomicWeight); |
---|
764 | |
---|
765 | G4ParticleDefinition *aPiMinus = G4PionMinus::PionMinus(); |
---|
766 | G4ParticleDefinition *aPiPlus = G4PionPlus::PionPlus(); |
---|
767 | G4ParticleDefinition *aPiZero = G4PionZero::PionZero(); |
---|
768 | |
---|
769 | G4int i; |
---|
770 | G4ThreeVector pseudoParticle[4]; |
---|
771 | for( i=0; i<4; ++i )pseudoParticle[i].set(0,0,0); |
---|
772 | pseudoParticle[0] = currentParticle.GetMomentum() |
---|
773 | + targetParticle.GetMomentum(); |
---|
774 | for( i=0; i<vecLen; ++i ) |
---|
775 | pseudoParticle[0] = pseudoParticle[0] + (vec[i]->GetMomentum()); |
---|
776 | // |
---|
777 | // Some smearing in transverse direction from Fermi motion |
---|
778 | // |
---|
779 | G4float pp, pp1; |
---|
780 | G4double alekw, p; |
---|
781 | G4double r1, r2, a1, ran1, ran2, xxh, exh, pxTemp, pyTemp, pzTemp; |
---|
782 | |
---|
783 | r1 = twopi*G4UniformRand(); |
---|
784 | r2 = G4UniformRand(); |
---|
785 | a1 = std::sqrt(-2.0*std::log(r2)); |
---|
786 | ran1 = a1*std::sin(r1)*0.020*numberofFinalStateNucleons*GeV; |
---|
787 | ran2 = a1*std::cos(r1)*0.020*numberofFinalStateNucleons*GeV; |
---|
788 | G4ThreeVector fermi(ran1, ran2, 0); |
---|
789 | |
---|
790 | pseudoParticle[0] = pseudoParticle[0]+fermi; // all particles + fermi |
---|
791 | pseudoParticle[2] = temp; // original in cms system |
---|
792 | pseudoParticle[3] = pseudoParticle[0]; |
---|
793 | |
---|
794 | pseudoParticle[1] = pseudoParticle[2].cross(pseudoParticle[3]); |
---|
795 | G4double rotation = 2.*pi*G4UniformRand(); |
---|
796 | pseudoParticle[1] = pseudoParticle[1].rotate(rotation, pseudoParticle[3]); |
---|
797 | pseudoParticle[2] = pseudoParticle[3].cross(pseudoParticle[1]); |
---|
798 | for(G4int ii=1; ii<=3; ii++) |
---|
799 | { |
---|
800 | p = pseudoParticle[ii].mag(); |
---|
801 | if( p == 0.0 ) |
---|
802 | pseudoParticle[ii]= G4ThreeVector( 0.0, 0.0, 0.0 ); |
---|
803 | else |
---|
804 | pseudoParticle[ii]= pseudoParticle[ii] * (1./p); |
---|
805 | } |
---|
806 | |
---|
807 | pxTemp = pseudoParticle[1].dot(currentParticle.GetMomentum()); |
---|
808 | pyTemp = pseudoParticle[2].dot(currentParticle.GetMomentum()); |
---|
809 | pzTemp = pseudoParticle[3].dot(currentParticle.GetMomentum()); |
---|
810 | currentParticle.SetMomentum( pxTemp, pyTemp, pzTemp ); |
---|
811 | |
---|
812 | pxTemp = pseudoParticle[1].dot(targetParticle.GetMomentum()); |
---|
813 | pyTemp = pseudoParticle[2].dot(targetParticle.GetMomentum()); |
---|
814 | pzTemp = pseudoParticle[3].dot(targetParticle.GetMomentum()); |
---|
815 | targetParticle.SetMomentum( pxTemp, pyTemp, pzTemp ); |
---|
816 | |
---|
817 | for( i=0; i<vecLen; ++i ) |
---|
818 | { |
---|
819 | pxTemp = pseudoParticle[1].dot(vec[i]->GetMomentum()); |
---|
820 | pyTemp = pseudoParticle[2].dot(vec[i]->GetMomentum()); |
---|
821 | pzTemp = pseudoParticle[3].dot(vec[i]->GetMomentum()); |
---|
822 | vec[i]->SetMomentum( pxTemp, pyTemp, pzTemp ); |
---|
823 | } |
---|
824 | // |
---|
825 | // Rotate in direction of primary particle, subtract binding energies |
---|
826 | // and make some further corrections if required |
---|
827 | // |
---|
828 | Defs1( modifiedOriginal, currentParticle, targetParticle, vec, vecLen ); |
---|
829 | G4double ekin; |
---|
830 | G4double dekin = 0.0; |
---|
831 | G4double ek1 = 0.0; |
---|
832 | G4int npions = 0; |
---|
833 | if( atomicWeight >= 1.5 ) // self-absorption in heavy molecules |
---|
834 | { |
---|
835 | // corrections for single particle spectra (shower particles) |
---|
836 | // |
---|
837 | const G4double alem[] = { 1.40, 2.30, 2.70, 3.00, 3.40, 4.60, 7.00 }; |
---|
838 | const G4double val0[] = { 0.00, 0.40, 0.48, 0.51, 0.54, 0.60, 0.65 }; |
---|
839 | alekw = std::log( originalIncident->GetKineticEnergy()/GeV ); |
---|
840 | exh = 1.0; |
---|
841 | if( alekw > alem[0] ) // get energy bin |
---|
842 | { |
---|
843 | exh = val0[6]; |
---|
844 | for( G4int j=1; j<7; ++j ) |
---|
845 | { |
---|
846 | if( alekw < alem[j] ) // use linear interpolation/extrapolation |
---|
847 | { |
---|
848 | G4double rcnve = (val0[j] - val0[j-1]) / (alem[j] - alem[j-1]); |
---|
849 | exh = rcnve * alekw + val0[j-1] - rcnve * alem[j-1]; |
---|
850 | break; |
---|
851 | } |
---|
852 | } |
---|
853 | exh = 1.0 - exh; |
---|
854 | } |
---|
855 | const G4double cfa = 0.025*((atomicWeight-1.)/120.)*std::exp(-(atomicWeight-1.)/120.); |
---|
856 | ekin = currentParticle.GetKineticEnergy()/GeV - cfa*(1+normal()/2.0); |
---|
857 | ekin = std::max( 1.0e-6, ekin ); |
---|
858 | xxh = 1.0; |
---|
859 | if( (modifiedOriginal.GetDefinition() == aPiPlus || |
---|
860 | modifiedOriginal.GetDefinition() == aPiMinus) && |
---|
861 | currentParticle.GetDefinition() == aPiZero && |
---|
862 | G4UniformRand() <= logWeight) xxh = exh; |
---|
863 | dekin += ekin*(1.0-xxh); |
---|
864 | ekin *= xxh; |
---|
865 | if (currentParticle.GetDefinition()->GetParticleSubType() == "pi") { |
---|
866 | ++npions; |
---|
867 | ek1 += ekin; |
---|
868 | } |
---|
869 | currentParticle.SetKineticEnergy( ekin*GeV ); |
---|
870 | pp = currentParticle.GetTotalMomentum()/MeV; |
---|
871 | pp1 = currentParticle.GetMomentum().mag()/MeV; |
---|
872 | if( pp1 < 0.001*MeV ) |
---|
873 | { |
---|
874 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
875 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
876 | G4double phi = twopi*G4UniformRand(); |
---|
877 | currentParticle.SetMomentum( pp*sintheta*std::cos(phi)*MeV, |
---|
878 | pp*sintheta*std::sin(phi)*MeV, |
---|
879 | pp*costheta*MeV ) ; |
---|
880 | } |
---|
881 | else |
---|
882 | currentParticle.SetMomentum( currentParticle.GetMomentum() * (pp/pp1) ); |
---|
883 | ekin = targetParticle.GetKineticEnergy()/GeV - cfa*(1+normal()/2.0); |
---|
884 | ekin = std::max( 1.0e-6, ekin ); |
---|
885 | xxh = 1.0; |
---|
886 | if( (modifiedOriginal.GetDefinition() == aPiPlus || |
---|
887 | modifiedOriginal.GetDefinition() == aPiMinus) && |
---|
888 | targetParticle.GetDefinition() == aPiZero && |
---|
889 | G4UniformRand() < logWeight) xxh = exh; |
---|
890 | dekin += ekin*(1.0-xxh); |
---|
891 | ekin *= xxh; |
---|
892 | if (targetParticle.GetDefinition()->GetParticleSubType() == "pi") { |
---|
893 | ++npions; |
---|
894 | ek1 += ekin; |
---|
895 | } |
---|
896 | targetParticle.SetKineticEnergy( ekin*GeV ); |
---|
897 | pp = targetParticle.GetTotalMomentum()/MeV; |
---|
898 | pp1 = targetParticle.GetMomentum().mag()/MeV; |
---|
899 | if( pp1 < 0.001*MeV ) |
---|
900 | { |
---|
901 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
902 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
903 | G4double phi = twopi*G4UniformRand(); |
---|
904 | targetParticle.SetMomentum( pp*sintheta*std::cos(phi)*MeV, |
---|
905 | pp*sintheta*std::sin(phi)*MeV, |
---|
906 | pp*costheta*MeV ) ; |
---|
907 | } |
---|
908 | else |
---|
909 | targetParticle.SetMomentum( targetParticle.GetMomentum() * (pp/pp1) ); |
---|
910 | for( i=0; i<vecLen; ++i ) |
---|
911 | { |
---|
912 | ekin = vec[i]->GetKineticEnergy()/GeV - cfa*(1+normal()/2.0); |
---|
913 | ekin = std::max( 1.0e-6, ekin ); |
---|
914 | xxh = 1.0; |
---|
915 | if( (modifiedOriginal.GetDefinition() == aPiPlus || |
---|
916 | modifiedOriginal.GetDefinition() == aPiMinus) && |
---|
917 | vec[i]->GetDefinition() == aPiZero && |
---|
918 | G4UniformRand() < logWeight) xxh = exh; |
---|
919 | dekin += ekin*(1.0-xxh); |
---|
920 | ekin *= xxh; |
---|
921 | if (vec[i]->GetDefinition()->GetParticleSubType() == "pi") { |
---|
922 | ++npions; |
---|
923 | ek1 += ekin; |
---|
924 | } |
---|
925 | vec[i]->SetKineticEnergy( ekin*GeV ); |
---|
926 | pp = vec[i]->GetTotalMomentum()/MeV; |
---|
927 | pp1 = vec[i]->GetMomentum().mag()/MeV; |
---|
928 | if( pp1 < 0.001*MeV ) |
---|
929 | { |
---|
930 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
931 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
932 | G4double phi = twopi*G4UniformRand(); |
---|
933 | vec[i]->SetMomentum( pp*sintheta*std::cos(phi)*MeV, |
---|
934 | pp*sintheta*std::sin(phi)*MeV, |
---|
935 | pp*costheta*MeV ) ; |
---|
936 | } |
---|
937 | else |
---|
938 | vec[i]->SetMomentum( vec[i]->GetMomentum() * (pp/pp1) ); |
---|
939 | } |
---|
940 | } |
---|
941 | if( (ek1 != 0.0) && (npions > 0) ) |
---|
942 | { |
---|
943 | dekin = 1.0 + dekin/ek1; |
---|
944 | // |
---|
945 | // first do the incident particle |
---|
946 | // |
---|
947 | if (currentParticle.GetDefinition()->GetParticleSubType() == "pi") |
---|
948 | { |
---|
949 | currentParticle.SetKineticEnergy( |
---|
950 | std::max( 0.001*MeV, dekin*currentParticle.GetKineticEnergy() ) ); |
---|
951 | pp = currentParticle.GetTotalMomentum()/MeV; |
---|
952 | pp1 = currentParticle.GetMomentum().mag()/MeV; |
---|
953 | if( pp1 < 0.001 ) |
---|
954 | { |
---|
955 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
956 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
957 | G4double phi = twopi*G4UniformRand(); |
---|
958 | currentParticle.SetMomentum( pp*sintheta*std::cos(phi)*MeV, |
---|
959 | pp*sintheta*std::sin(phi)*MeV, |
---|
960 | pp*costheta*MeV ) ; |
---|
961 | } else { |
---|
962 | currentParticle.SetMomentum( currentParticle.GetMomentum() * (pp/pp1) ); |
---|
963 | } |
---|
964 | } |
---|
965 | |
---|
966 | if (targetParticle.GetDefinition()->GetParticleSubType() == "pi") |
---|
967 | { |
---|
968 | targetParticle.SetKineticEnergy( |
---|
969 | std::max( 0.001*MeV, dekin*targetParticle.GetKineticEnergy() ) ); |
---|
970 | pp = targetParticle.GetTotalMomentum()/MeV; |
---|
971 | pp1 = targetParticle.GetMomentum().mag()/MeV; |
---|
972 | if( pp1 < 0.001 ) |
---|
973 | { |
---|
974 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
975 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
976 | G4double phi = twopi*G4UniformRand(); |
---|
977 | targetParticle.SetMomentum( pp*sintheta*std::cos(phi)*MeV, |
---|
978 | pp*sintheta*std::sin(phi)*MeV, |
---|
979 | pp*costheta*MeV ) ; |
---|
980 | } else { |
---|
981 | targetParticle.SetMomentum( targetParticle.GetMomentum() * (pp/pp1) ); |
---|
982 | } |
---|
983 | } |
---|
984 | |
---|
985 | for( i=0; i<vecLen; ++i ) |
---|
986 | { |
---|
987 | if (vec[i]->GetDefinition()->GetParticleSubType() == "pi") |
---|
988 | { |
---|
989 | vec[i]->SetKineticEnergy( std::max( 0.001*MeV, dekin*vec[i]->GetKineticEnergy() ) ); |
---|
990 | pp = vec[i]->GetTotalMomentum()/MeV; |
---|
991 | pp1 = vec[i]->GetMomentum().mag()/MeV; |
---|
992 | if( pp1 < 0.001 ) |
---|
993 | { |
---|
994 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
995 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
996 | G4double phi = twopi*G4UniformRand(); |
---|
997 | vec[i]->SetMomentum( pp*sintheta*std::cos(phi)*MeV, |
---|
998 | pp*sintheta*std::sin(phi)*MeV, |
---|
999 | pp*costheta*MeV ) ; |
---|
1000 | } else { |
---|
1001 | vec[i]->SetMomentum( vec[i]->GetMomentum() * (pp/pp1) ); |
---|
1002 | } |
---|
1003 | } |
---|
1004 | } // for i |
---|
1005 | } // if (ek1 != 0) |
---|
1006 | } |
---|
1007 | |
---|
1008 | std::pair<G4int, G4int> G4RPGReaction::GetFinalStateNucleons( |
---|
1009 | const G4DynamicParticle* originalTarget, |
---|
1010 | const G4FastVector<G4ReactionProduct,256>& vec, |
---|
1011 | const G4int& vecLen) |
---|
1012 | { |
---|
1013 | // Get number of protons and neutrons removed from the target nucleus |
---|
1014 | |
---|
1015 | G4int protonsRemoved = 0; |
---|
1016 | G4int neutronsRemoved = 0; |
---|
1017 | if (originalTarget->GetDefinition()->GetParticleName() == "proton") |
---|
1018 | protonsRemoved++; |
---|
1019 | else |
---|
1020 | neutronsRemoved++; |
---|
1021 | |
---|
1022 | G4String secName; |
---|
1023 | for (G4int i = 0; i < vecLen; i++) { |
---|
1024 | secName = vec[i]->GetDefinition()->GetParticleName(); |
---|
1025 | if (secName == "proton") { |
---|
1026 | protonsRemoved++; |
---|
1027 | } else if (secName == "neutron") { |
---|
1028 | neutronsRemoved++; |
---|
1029 | } else if (secName == "anti_proton") { |
---|
1030 | protonsRemoved--; |
---|
1031 | } else if (secName == "anti_neutron") { |
---|
1032 | neutronsRemoved--; |
---|
1033 | } |
---|
1034 | } |
---|
1035 | |
---|
1036 | return std::pair<G4int, G4int>(protonsRemoved, neutronsRemoved); |
---|
1037 | } |
---|
1038 | |
---|
1039 | |
---|
1040 | G4ThreeVector G4RPGReaction::Isotropic(const G4double& pp) |
---|
1041 | { |
---|
1042 | G4double costheta = 2.*G4UniformRand() - 1.; |
---|
1043 | G4double sintheta = std::sqrt(1. - costheta*costheta); |
---|
1044 | G4double phi = twopi*G4UniformRand(); |
---|
1045 | return G4ThreeVector(pp*sintheta*std::cos(phi), |
---|
1046 | pp*sintheta*std::sin(phi), |
---|
1047 | pp*costheta); |
---|
1048 | } |
---|
1049 | |
---|
1050 | |
---|
1051 | void G4RPGReaction::MomentumCheck( |
---|
1052 | const G4ReactionProduct &modifiedOriginal, |
---|
1053 | G4ReactionProduct ¤tParticle, |
---|
1054 | G4ReactionProduct &targetParticle, |
---|
1055 | G4FastVector<G4ReactionProduct,256> &vec, |
---|
1056 | G4int &vecLen ) |
---|
1057 | { |
---|
1058 | const G4double pOriginal = modifiedOriginal.GetTotalMomentum()/MeV; |
---|
1059 | G4double testMomentum = currentParticle.GetMomentum().mag()/MeV; |
---|
1060 | G4double pMass; |
---|
1061 | if( testMomentum >= pOriginal ) |
---|
1062 | { |
---|
1063 | pMass = currentParticle.GetMass()/MeV; |
---|
1064 | currentParticle.SetTotalEnergy( |
---|
1065 | std::sqrt( pMass*pMass + pOriginal*pOriginal )*MeV ); |
---|
1066 | currentParticle.SetMomentum( |
---|
1067 | currentParticle.GetMomentum() * (pOriginal/testMomentum) ); |
---|
1068 | } |
---|
1069 | testMomentum = targetParticle.GetMomentum().mag()/MeV; |
---|
1070 | if( testMomentum >= pOriginal ) |
---|
1071 | { |
---|
1072 | pMass = targetParticle.GetMass()/MeV; |
---|
1073 | targetParticle.SetTotalEnergy( |
---|
1074 | std::sqrt( pMass*pMass + pOriginal*pOriginal )*MeV ); |
---|
1075 | targetParticle.SetMomentum( |
---|
1076 | targetParticle.GetMomentum() * (pOriginal/testMomentum) ); |
---|
1077 | } |
---|
1078 | for( G4int i=0; i<vecLen; ++i ) |
---|
1079 | { |
---|
1080 | testMomentum = vec[i]->GetMomentum().mag()/MeV; |
---|
1081 | if( testMomentum >= pOriginal ) |
---|
1082 | { |
---|
1083 | pMass = vec[i]->GetMass()/MeV; |
---|
1084 | vec[i]->SetTotalEnergy( |
---|
1085 | std::sqrt( pMass*pMass + pOriginal*pOriginal )*MeV ); |
---|
1086 | vec[i]->SetMomentum( vec[i]->GetMomentum() * (pOriginal/testMomentum) ); |
---|
1087 | } |
---|
1088 | } |
---|
1089 | } |
---|
1090 | |
---|
1091 | void G4RPGReaction::NuclearReaction( |
---|
1092 | G4FastVector<G4ReactionProduct,4> &vec, |
---|
1093 | G4int &vecLen, |
---|
1094 | const G4HadProjectile *originalIncident, |
---|
1095 | const G4Nucleus &targetNucleus, |
---|
1096 | const G4double theAtomicMass, |
---|
1097 | const G4double *mass ) |
---|
1098 | { |
---|
1099 | // derived from original FORTRAN code NUCREC by H. Fesefeldt (12-Feb-1987) |
---|
1100 | // |
---|
1101 | // Nuclear reaction kinematics at low energies |
---|
1102 | // |
---|
1103 | G4ParticleDefinition *aGamma = G4Gamma::Gamma(); |
---|
1104 | G4ParticleDefinition *aProton = G4Proton::Proton(); |
---|
1105 | G4ParticleDefinition *aNeutron = G4Neutron::Neutron(); |
---|
1106 | G4ParticleDefinition *aDeuteron = G4Deuteron::Deuteron(); |
---|
1107 | G4ParticleDefinition *aTriton = G4Triton::Triton(); |
---|
1108 | G4ParticleDefinition *anAlpha = G4Alpha::Alpha(); |
---|
1109 | |
---|
1110 | const G4double aProtonMass = aProton->GetPDGMass()/MeV; |
---|
1111 | const G4double aNeutronMass = aNeutron->GetPDGMass()/MeV; |
---|
1112 | const G4double aDeuteronMass = aDeuteron->GetPDGMass()/MeV; |
---|
1113 | const G4double aTritonMass = aTriton->GetPDGMass()/MeV; |
---|
1114 | const G4double anAlphaMass = anAlpha->GetPDGMass()/MeV; |
---|
1115 | |
---|
1116 | G4ReactionProduct currentParticle; |
---|
1117 | currentParticle = *originalIncident; |
---|
1118 | // |
---|
1119 | // Set beam particle, take kinetic energy of current particle as the |
---|
1120 | // fundamental quantity. Due to the difficult kinematic, all masses have to |
---|
1121 | // be assigned the best measured values |
---|
1122 | // |
---|
1123 | G4double p = currentParticle.GetTotalMomentum(); |
---|
1124 | G4double pp = currentParticle.GetMomentum().mag(); |
---|
1125 | if( pp <= 0.001*MeV ) |
---|
1126 | { |
---|
1127 | G4double phinve = twopi*G4UniformRand(); |
---|
1128 | G4double rthnve = std::acos( std::max( -1.0, std::min( 1.0, -1.0 + 2.0*G4UniformRand() ) ) ); |
---|
1129 | currentParticle.SetMomentum( p*std::sin(rthnve)*std::cos(phinve), |
---|
1130 | p*std::sin(rthnve)*std::sin(phinve), |
---|
1131 | p*std::cos(rthnve) ); |
---|
1132 | } |
---|
1133 | else |
---|
1134 | currentParticle.SetMomentum( currentParticle.GetMomentum() * (p/pp) ); |
---|
1135 | // |
---|
1136 | // calculate Q-value of reactions |
---|
1137 | // |
---|
1138 | G4double currentKinetic = currentParticle.GetKineticEnergy()/MeV; |
---|
1139 | G4double currentMass = currentParticle.GetDefinition()->GetPDGMass()/MeV; |
---|
1140 | G4double qv = currentKinetic + theAtomicMass + currentMass; |
---|
1141 | |
---|
1142 | G4double qval[9]; |
---|
1143 | qval[0] = qv - mass[0]; |
---|
1144 | qval[1] = qv - mass[1] - aNeutronMass; |
---|
1145 | qval[2] = qv - mass[2] - aProtonMass; |
---|
1146 | qval[3] = qv - mass[3] - aDeuteronMass; |
---|
1147 | qval[4] = qv - mass[4] - aTritonMass; |
---|
1148 | qval[5] = qv - mass[5] - anAlphaMass; |
---|
1149 | qval[6] = qv - mass[6] - aNeutronMass - aNeutronMass; |
---|
1150 | qval[7] = qv - mass[7] - aNeutronMass - aProtonMass; |
---|
1151 | qval[8] = qv - mass[8] - aProtonMass - aProtonMass; |
---|
1152 | |
---|
1153 | if( currentParticle.GetDefinition() == aNeutron ) |
---|
1154 | { |
---|
1155 | const G4double A = targetNucleus.GetN(); // atomic weight |
---|
1156 | if( G4UniformRand() > ((A-1.0)/230.0)*((A-1.0)/230.0) ) |
---|
1157 | qval[0] = 0.0; |
---|
1158 | if( G4UniformRand() >= currentKinetic/7.9254*A ) |
---|
1159 | qval[2] = qval[3] = qval[4] = qval[5] = qval[8] = 0.0; |
---|
1160 | } |
---|
1161 | else |
---|
1162 | qval[0] = 0.0; |
---|
1163 | |
---|
1164 | G4int i; |
---|
1165 | qv = 0.0; |
---|
1166 | for( i=0; i<9; ++i ) |
---|
1167 | { |
---|
1168 | if( mass[i] < 500.0*MeV )qval[i] = 0.0; |
---|
1169 | if( qval[i] < 0.0 )qval[i] = 0.0; |
---|
1170 | qv += qval[i]; |
---|
1171 | } |
---|
1172 | G4double qv1 = 0.0; |
---|
1173 | G4double ran = G4UniformRand(); |
---|
1174 | G4int index; |
---|
1175 | for( index=0; index<9; ++index ) |
---|
1176 | { |
---|
1177 | if( qval[index] > 0.0 ) |
---|
1178 | { |
---|
1179 | qv1 += qval[index]/qv; |
---|
1180 | if( ran <= qv1 )break; |
---|
1181 | } |
---|
1182 | } |
---|
1183 | if( index == 9 ) // loop continued to the end |
---|
1184 | { |
---|
1185 | throw G4HadronicException(__FILE__, __LINE__, |
---|
1186 | "G4RPGReaction::NuclearReaction: inelastic reaction kinematically not possible"); |
---|
1187 | } |
---|
1188 | G4double ke = currentParticle.GetKineticEnergy()/GeV; |
---|
1189 | G4int nt = 2; |
---|
1190 | if( (index>=6) || (G4UniformRand()<std::min(0.5,ke*10.0)) )nt = 3; |
---|
1191 | |
---|
1192 | G4ReactionProduct **v = new G4ReactionProduct * [3]; |
---|
1193 | v[0] = new G4ReactionProduct; |
---|
1194 | v[1] = new G4ReactionProduct; |
---|
1195 | v[2] = new G4ReactionProduct; |
---|
1196 | |
---|
1197 | v[0]->SetMass( mass[index]*MeV ); |
---|
1198 | switch( index ) |
---|
1199 | { |
---|
1200 | case 0: |
---|
1201 | v[1]->SetDefinition( aGamma ); |
---|
1202 | v[2]->SetDefinition( aGamma ); |
---|
1203 | break; |
---|
1204 | case 1: |
---|
1205 | v[1]->SetDefinition( aNeutron ); |
---|
1206 | v[2]->SetDefinition( aGamma ); |
---|
1207 | break; |
---|
1208 | case 2: |
---|
1209 | v[1]->SetDefinition( aProton ); |
---|
1210 | v[2]->SetDefinition( aGamma ); |
---|
1211 | break; |
---|
1212 | case 3: |
---|
1213 | v[1]->SetDefinition( aDeuteron ); |
---|
1214 | v[2]->SetDefinition( aGamma ); |
---|
1215 | break; |
---|
1216 | case 4: |
---|
1217 | v[1]->SetDefinition( aTriton ); |
---|
1218 | v[2]->SetDefinition( aGamma ); |
---|
1219 | break; |
---|
1220 | case 5: |
---|
1221 | v[1]->SetDefinition( anAlpha ); |
---|
1222 | v[2]->SetDefinition( aGamma ); |
---|
1223 | break; |
---|
1224 | case 6: |
---|
1225 | v[1]->SetDefinition( aNeutron ); |
---|
1226 | v[2]->SetDefinition( aNeutron ); |
---|
1227 | break; |
---|
1228 | case 7: |
---|
1229 | v[1]->SetDefinition( aNeutron ); |
---|
1230 | v[2]->SetDefinition( aProton ); |
---|
1231 | break; |
---|
1232 | case 8: |
---|
1233 | v[1]->SetDefinition( aProton ); |
---|
1234 | v[2]->SetDefinition( aProton ); |
---|
1235 | break; |
---|
1236 | } |
---|
1237 | // |
---|
1238 | // calculate centre of mass energy |
---|
1239 | // |
---|
1240 | G4ReactionProduct pseudo1; |
---|
1241 | pseudo1.SetMass( theAtomicMass*MeV ); |
---|
1242 | pseudo1.SetTotalEnergy( theAtomicMass*MeV ); |
---|
1243 | G4ReactionProduct pseudo2 = currentParticle + pseudo1; |
---|
1244 | pseudo2.SetMomentum( pseudo2.GetMomentum() * (-1.0) ); |
---|
1245 | // |
---|
1246 | // use phase space routine in centre of mass system |
---|
1247 | // |
---|
1248 | G4FastVector<G4ReactionProduct,256> tempV; |
---|
1249 | tempV.Initialize( nt ); |
---|
1250 | G4int tempLen = 0; |
---|
1251 | tempV.SetElement( tempLen++, v[0] ); |
---|
1252 | tempV.SetElement( tempLen++, v[1] ); |
---|
1253 | if( nt == 3 )tempV.SetElement( tempLen++, v[2] ); |
---|
1254 | G4bool constantCrossSection = true; |
---|
1255 | GenerateNBodyEvent( pseudo2.GetMass()/MeV, constantCrossSection, tempV, tempLen ); |
---|
1256 | v[0]->Lorentz( *v[0], pseudo2 ); |
---|
1257 | v[1]->Lorentz( *v[1], pseudo2 ); |
---|
1258 | if( nt == 3 )v[2]->Lorentz( *v[2], pseudo2 ); |
---|
1259 | |
---|
1260 | G4bool particleIsDefined = false; |
---|
1261 | if( v[0]->GetMass()/MeV - aProtonMass < 0.1 ) |
---|
1262 | { |
---|
1263 | v[0]->SetDefinition( aProton ); |
---|
1264 | particleIsDefined = true; |
---|
1265 | } |
---|
1266 | else if( v[0]->GetMass()/MeV - aNeutronMass < 0.1 ) |
---|
1267 | { |
---|
1268 | v[0]->SetDefinition( aNeutron ); |
---|
1269 | particleIsDefined = true; |
---|
1270 | } |
---|
1271 | else if( v[0]->GetMass()/MeV - aDeuteronMass < 0.1 ) |
---|
1272 | { |
---|
1273 | v[0]->SetDefinition( aDeuteron ); |
---|
1274 | particleIsDefined = true; |
---|
1275 | } |
---|
1276 | else if( v[0]->GetMass()/MeV - aTritonMass < 0.1 ) |
---|
1277 | { |
---|
1278 | v[0]->SetDefinition( aTriton ); |
---|
1279 | particleIsDefined = true; |
---|
1280 | } |
---|
1281 | else if( v[0]->GetMass()/MeV - anAlphaMass < 0.1 ) |
---|
1282 | { |
---|
1283 | v[0]->SetDefinition( anAlpha ); |
---|
1284 | particleIsDefined = true; |
---|
1285 | } |
---|
1286 | currentParticle.SetKineticEnergy( |
---|
1287 | std::max( 0.001, currentParticle.GetKineticEnergy()/MeV ) ); |
---|
1288 | p = currentParticle.GetTotalMomentum(); |
---|
1289 | pp = currentParticle.GetMomentum().mag(); |
---|
1290 | if( pp <= 0.001*MeV ) |
---|
1291 | { |
---|
1292 | G4double phinve = twopi*G4UniformRand(); |
---|
1293 | G4double rthnve = std::acos( std::max( -1.0, std::min( 1.0, -1.0 + 2.0*G4UniformRand() ) ) ); |
---|
1294 | currentParticle.SetMomentum( p*std::sin(rthnve)*std::cos(phinve), |
---|
1295 | p*std::sin(rthnve)*std::sin(phinve), |
---|
1296 | p*std::cos(rthnve) ); |
---|
1297 | } |
---|
1298 | else |
---|
1299 | currentParticle.SetMomentum( currentParticle.GetMomentum() * (p/pp) ); |
---|
1300 | |
---|
1301 | if( particleIsDefined ) |
---|
1302 | { |
---|
1303 | v[0]->SetKineticEnergy( |
---|
1304 | std::max( 0.001, 0.5*G4UniformRand()*v[0]->GetKineticEnergy()/MeV ) ); |
---|
1305 | p = v[0]->GetTotalMomentum(); |
---|
1306 | pp = v[0]->GetMomentum().mag(); |
---|
1307 | if( pp <= 0.001*MeV ) |
---|
1308 | { |
---|
1309 | G4double phinve = twopi*G4UniformRand(); |
---|
1310 | G4double rthnve = std::acos( std::max(-1.0,std::min(1.0,-1.0+2.0*G4UniformRand())) ); |
---|
1311 | v[0]->SetMomentum( p*std::sin(rthnve)*std::cos(phinve), |
---|
1312 | p*std::sin(rthnve)*std::sin(phinve), |
---|
1313 | p*std::cos(rthnve) ); |
---|
1314 | } |
---|
1315 | else |
---|
1316 | v[0]->SetMomentum( v[0]->GetMomentum() * (p/pp) ); |
---|
1317 | } |
---|
1318 | if( (v[1]->GetDefinition() == aDeuteron) || |
---|
1319 | (v[1]->GetDefinition() == aTriton) || |
---|
1320 | (v[1]->GetDefinition() == anAlpha) ) |
---|
1321 | v[1]->SetKineticEnergy( |
---|
1322 | std::max( 0.001, 0.5*G4UniformRand()*v[1]->GetKineticEnergy()/MeV ) ); |
---|
1323 | else |
---|
1324 | v[1]->SetKineticEnergy( std::max( 0.001, v[1]->GetKineticEnergy()/MeV ) ); |
---|
1325 | |
---|
1326 | p = v[1]->GetTotalMomentum(); |
---|
1327 | pp = v[1]->GetMomentum().mag(); |
---|
1328 | if( pp <= 0.001*MeV ) |
---|
1329 | { |
---|
1330 | G4double phinve = twopi*G4UniformRand(); |
---|
1331 | G4double rthnve = std::acos( std::max(-1.0,std::min(1.0,-1.0+2.0*G4UniformRand())) ); |
---|
1332 | v[1]->SetMomentum( p*std::sin(rthnve)*std::cos(phinve), |
---|
1333 | p*std::sin(rthnve)*std::sin(phinve), |
---|
1334 | p*std::cos(rthnve) ); |
---|
1335 | } |
---|
1336 | else |
---|
1337 | v[1]->SetMomentum( v[1]->GetMomentum() * (p/pp) ); |
---|
1338 | |
---|
1339 | if( nt == 3 ) |
---|
1340 | { |
---|
1341 | if( (v[2]->GetDefinition() == aDeuteron) || |
---|
1342 | (v[2]->GetDefinition() == aTriton) || |
---|
1343 | (v[2]->GetDefinition() == anAlpha) ) |
---|
1344 | v[2]->SetKineticEnergy( |
---|
1345 | std::max( 0.001, 0.5*G4UniformRand()*v[2]->GetKineticEnergy()/MeV ) ); |
---|
1346 | else |
---|
1347 | v[2]->SetKineticEnergy( std::max( 0.001, v[2]->GetKineticEnergy()/MeV ) ); |
---|
1348 | |
---|
1349 | p = v[2]->GetTotalMomentum(); |
---|
1350 | pp = v[2]->GetMomentum().mag(); |
---|
1351 | if( pp <= 0.001*MeV ) |
---|
1352 | { |
---|
1353 | G4double phinve = twopi*G4UniformRand(); |
---|
1354 | G4double rthnve = std::acos( std::max(-1.0,std::min(1.0,-1.0+2.0*G4UniformRand())) ); |
---|
1355 | v[2]->SetMomentum( p*std::sin(rthnve)*std::cos(phinve), |
---|
1356 | p*std::sin(rthnve)*std::sin(phinve), |
---|
1357 | p*std::cos(rthnve) ); |
---|
1358 | } |
---|
1359 | else |
---|
1360 | v[2]->SetMomentum( v[2]->GetMomentum() * (p/pp) ); |
---|
1361 | } |
---|
1362 | G4int del; |
---|
1363 | for(del=0; del<vecLen; del++) delete vec[del]; |
---|
1364 | vecLen = 0; |
---|
1365 | if( particleIsDefined ) |
---|
1366 | { |
---|
1367 | vec.SetElement( vecLen++, v[0] ); |
---|
1368 | } |
---|
1369 | else |
---|
1370 | { |
---|
1371 | delete v[0]; |
---|
1372 | } |
---|
1373 | vec.SetElement( vecLen++, v[1] ); |
---|
1374 | if( nt == 3 ) |
---|
1375 | { |
---|
1376 | vec.SetElement( vecLen++, v[2] ); |
---|
1377 | } |
---|
1378 | else |
---|
1379 | { |
---|
1380 | delete v[2]; |
---|
1381 | } |
---|
1382 | delete [] v; |
---|
1383 | return; |
---|
1384 | } |
---|
1385 | |
---|
1386 | /* end of file */ |
---|
1387 | |
---|