1 | ------------------------------------------------------------------- |
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2 | |
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3 | ========================================================== |
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4 | Geant4 - an Object-Oriented Toolkit for Physics Simulation |
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5 | ========================================================== |
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6 | |
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7 | History file for hadronic/models/de_excitation |
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8 | ---------------------------------------------- |
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9 | |
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10 | This file should be used to summarize modifications introduced in the |
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11 | code and to keep track of all tags. |
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12 | |
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13 | --------------------------------------------------------------- |
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14 | * Please list in reverse chronological order (last date on top) |
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15 | --------------------------------------------------------------- |
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16 | |
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17 | 09-April 2010 V.Ivanchenko hadr-pre-V09-03-04 |
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18 | --------------------------------------------------- |
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19 | G4PreCompoundProton, G4PreCompoundDeuteron, G4PreCompoundTriton, |
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20 | G4PreCompoundHe3, G4PreCompoundAlpha - (JMQ) return back to published |
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21 | varian of OPT3 (Kalbach) parameterization of inverse |
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22 | cross section |
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23 | |
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24 | 01-March 2010 V.Ivanchenko hadr-pre-V09-03-03 |
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25 | --------------------------------------------------- |
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26 | G4VPreCompoundIon, G4VPreCompoundNucleon - removed dummy classes |
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27 | |
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28 | 25-February 2010 V.Ivanchenko hadr-pre-V09-03-02 |
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29 | --------------------------------------------------- |
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30 | G4PreCompoundEmission - more protections for numerical computations are added |
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31 | |
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32 | 17-February 2010 V.Ivanchenko hadr-pre-V09-03-01 |
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33 | --------------------------------------------------- |
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34 | G4PreCompoundEmission - (JMQ) return back value of Ef as it was in 9.3 |
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35 | |
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36 | 19-January 2010 V.Ivanchenko hadr-pre-V09-03-00 |
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37 | --------------------------------------------------- |
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38 | G4PreCompoundEmission - (JMQ) added protection against unphysical value of |
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39 | parameter "an" when exitation energy is huge |
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40 | to avoid numerical problem |
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41 | - simplified algorithm of sampling |
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42 | |
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43 | 21-November 2009 V.Ivanchenko hadr-pre-V09-02-07 |
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44 | --------------------------------------------------- |
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45 | G4PreCompoundTransitions - return back transition probability |
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46 | |
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47 | 19-November 2009 V.Ivanchenko hadr-pre-V09-02-06 |
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48 | --------------------------------------------------- |
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49 | G4PreCompoundModel - (JMQ) CEM transition probabilities are set |
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50 | as a default |
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51 | G4PreCompoundTransitions - (JMQ) CEM transition probabilities have been |
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52 | renormalized (transitions with Delta N=+2 |
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53 | are increased by factor 5) |
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54 | |
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55 | 12-November 2009 G.Cosmo hadr-pre-V09-02-05 |
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56 | --------------------------------------------------- |
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57 | G4PreCompoundEmission - fixed compilation error on Windows. |
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58 | |
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59 | 12-November 2009 G.Folger hadr-pre-V09-02-04 |
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60 | --------------------------------------------------- |
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61 | G4PrecompoundEmission - modifiy AngularDistribution() to avoid floating point |
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62 | exceptions. |
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63 | - remove calls to log in rho() replaced by use of new |
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64 | logfactorial() |
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65 | |
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66 | 13-February 2009 V.Ivanchenko hadr-pre-V09-02-03 |
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67 | --------------------------------------------------- |
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68 | G4PreCompoundXXX - changed the shape of probabilities (return back to 9.2) |
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69 | for d, t, He3, alpha (JMQ) |
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70 | |
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71 | 12-February 2009 V.Ivanchenko hadr-pre-V09-02-02 |
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72 | --------------------------------------------------- |
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73 | G4PreCompoundXXX - changed the shape of probabilities |
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74 | for d, t, He3, alpha near the Coulomb barrier (JMQ) |
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75 | |
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76 | 11-February 2009 V.Ivanchenko hadr-pre-V09-02-01 |
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77 | --------------------------------------------------- |
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78 | G4PreCompoundXXX - set default Opt3 back, add decrease Coulomb barrier |
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79 | for d, t, a, he3 (JMQ) |
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80 | |
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81 | 10-February 2009 V.Ivanchenko hadr-pre-V09-02-00 |
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82 | --------------------------------------------------- |
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83 | Some clean up of comments |
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84 | G4PreCompoundIon - fixed probability of light ion emmision (JMQ) |
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85 | G4PreCompoundXXX - by default Opt1 is used for d, t, a, he3, |
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86 | Opt3 for n, p (JMQ) |
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87 | |
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88 | 09-December 2008 A.Howard hadr-pre-V09-01-15 |
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89 | --------------------------------------------------- |
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90 | Added protection for close to zero excitation energy in |
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91 | G4PreCompoundModel.cc (according to JMQ, MAC) to not try to de-excite. |
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92 | |
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93 | 09-December 2008 A.Howard hadr-pre-V09-01-14 |
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94 | --------------------------------------------------- |
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95 | Added protection for close to zero excitation energy in |
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96 | G4PreCompoundTransitions.cc (returns 0.0), prevents FPE later on. |
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97 | |
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98 | 27-November 2008 A.Howard hadr-pre-V09-01-13 |
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99 | --------------------------------------------------- |
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100 | Added data member initialisation to G4VPreCompoundTransitions.hh |
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101 | |
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102 | 19-November 2008 A.Howard hadr-pre-V09-01-12 |
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103 | --------------------------------------------------- |
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104 | JMQ fix to G4PreCompoundNeutron.cc for Zirconium (if (nu < 0.)nu=-nu). |
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105 | |
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106 | 30-September 2008 A.Howard hadr-pre-V09-01-11 |
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107 | --------------------------------------------------- |
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108 | Trivial protection against negative probabilities for incident protons on |
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109 | targets with A < Carbon. |
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110 | |
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111 | 22-September 2008 A.Howard hadr-pre-V09-01-10 |
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112 | --------------------------------------------------- |
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113 | JMQ's latest developments - which are an extension of hadr-pre-V09-01-08 with |
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114 | cross-section options (equivalent to the de-excitation modifications) and other |
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115 | options (SICB, Never Go Back,...). In addition Gunter's fix to the factorials |
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116 | is included from hadr-pre-V09-01-09. |
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117 | Added new files: G4PreCompoundAlpha.cc G4PreCompoundDeuteron.cc |
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118 | G4PreCompoundHe3.cc G4PreCompoundNeutron.cc G4PreCompoundProton.cc |
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119 | G4PreCompoundTriton.cc (Classes previously existed. Now they have more |
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120 | involved cross-section calculations). |
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121 | |
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122 | 19-September 2008 A.Howard hadr-pre-V09-01-09 |
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123 | --------------------------------------------------- |
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124 | Including Gunter's fix (see 11-August below) on top of ref-07 |
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125 | (hadr-pre-V09-00-04), i.e. without JMQ's developments. |
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126 | |
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127 | 11-August 2008 G.Folger |
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128 | ----------------------------------------------- |
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129 | Rewrite algorithm in G4PreCompoundEmission::rho() to avoid frequent |
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130 | floating point overflow when using Precompund in combination |
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131 | with Binary Cascade. |
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132 | |
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133 | |
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134 | 24 July 2008 J. M. Quesada hadr-pre-V09-01-08 |
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135 | --------------------------------------------------- |
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136 | Minor fixes and Coulomb barrier just for Wellisch's proton cross section |
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137 | (OPT=2) |
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138 | |
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139 | |
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140 | 23 July 2008 V.Ivanchenko hadr-pre-V09-01-07 |
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141 | --------------------------------------------------- |
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142 | Fixed mistake in tagging |
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143 | |
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144 | 23 July 2008 V.Ivanchenko hadr-pre-V09-01-06 |
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145 | --------------------------------------------------- |
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146 | Return back Coulomb barrier initialisation (J.M.Quesada) |
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147 | |
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148 | 27 June 2008 V.Ivanchenko hadr-pre-V09-01-05 |
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149 | --------------------------------------------------- |
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150 | Fixed G4PreCompoundNucleon and G4PreCompoundIon for |
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151 | Coulomb barrier, added protections for zero cross sections, |
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152 | OPT=2 is used (J.M.Quesada) |
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153 | |
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154 | 05 June 2008 J. M. Quesada hadr-pre-V09-01-04 |
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155 | --------------------------------------------------- |
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156 | Bug fixed in OPT=1 (Chatterjee) charged particle cross sections. |
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157 | Unphysical values at very low emission energies have been corrected (set |
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158 | to 0); OPT=1 ( OPT=2 in previous tag) |
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159 | |
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160 | |
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161 | 15-May 2008 J. M.Quesada hadr-pre-V09-01-03 |
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162 | ----------------------------------------------- |
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163 | The retrieval of transition probabilities in G4PreCompoundModel.cc |
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164 | (for protection against unphysically crossing the landa_+=landa_- condition) |
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165 | was misplaced. Now it has been placed inside the preequilibrium transitions |
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166 | loop. |
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167 | |
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168 | 8-May 2008 J. M.Quesada hadr-pre-V09-01-02 |
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169 | ----------------------------------------------- |
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170 | Protection against non physical situation has been set: Equilibrium exciton number |
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171 | Neq (when reached, equilibrium regime starts) should correspond to equal transition |
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172 | probabilities "back" and "forth". Nevertheless, for heavy target (Neq is big even |
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173 | for low incident energies) after first emission this condition (equal trans. prob.) |
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174 | is reached far before reaching corresponding Neq of the residual. Unless this "jump" |
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175 | to equilibrium is forced in this case, preequilibrium will be |
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176 | spuriously prolonged (as a side effect, with huge CPU consumption). |
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177 | G4PreCompoundModel and G4PreCompoundTransitions classes have been modified. |
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178 | |
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179 | |
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180 | 1-May 2008 J. M.Quesada hadr-pre-V09-01-01 |
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181 | ----------------------------------------------- |
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182 | - First trial with cvs. 00 skipped by mistake. |
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183 | New inverse cross sections: |
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184 | OPT=1 Chetterjee's parameterization to reaction cross sections from optical potential global fittings. |
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185 | OPT=2 as OPT=1 but for protons the Wellisch's parameterization for protons is used (DEFAULT) |
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186 | OPT=3 Kalbach's modifications of Chatterjee's parameterization of cross sections |
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187 | OPT=4 as OPT=3 but for protons the Wellisch's parameterization for protons is used |
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188 | |
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189 | Coulomb barrier has been suppressed as it enters through inverse cross sections. Also methods related to former Dostrovski's cross sections (alpha , beta and C parameters) have been suppressed. In all particle header files: |
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190 | G4PreCompoundNucleon.hh ,G4PreCompoundNeutron.hh,G4PreCompoundProton.hh, G4PreCompoundIon.hh, G4PreCompoundDeuteron.hh, G4PreCompoundTriton.hh ,G4PreCompoundHe3.hh , G4PreCompoundAlpha.hh |
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191 | |
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192 | |
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193 | Soft cutoff transition from equilibrium to equilibrium has been suppressed (unphysical and not necessary anymore).In G4PreCompoundModel. |
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194 | |
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195 | New transition probabilities : |
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196 | OPT=1 Gudima's formulae |
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197 | OPT=2 Machner parameterization of matrix elements for transitions (DEFAULT) |
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198 | |
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199 | Level density is set to A/10 (Gudima's prescription). |
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200 | |
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201 | Several bugs fixed (average xs in nucleon-nucleon xs in G4PreCompundTransitions.cc and emission probability formula in G4PreCompoundIon.cc ) . |
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202 | |
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203 | 25-October 2007 A.Howard hadr-pre-V09-00-04 |
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204 | ----------------------------------------------- |
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205 | - Removed compilation warning on unused parameter in G4PreCompoundIon.cc |
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206 | |
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207 | |
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208 | 11-October 2007 A.Howard hadr-pre-V09-00-03 |
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209 | ----------------------------------------------- |
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210 | - Corrected for integer arithmetic bug in G4PreCompoundModel.cc |
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211 | (ratio of charged to neutral excitons) |
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212 | |
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213 | |
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214 | 01-October 2007 A.Howard hadr-pre-V09-00-02 |
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215 | ----------------------------------------------- |
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216 | - Protected Rj (Q_beta) factor against divide by zeroes (should never happen?) |
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217 | The following files have been modified: |
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218 | G4PreCompoundAlpha.hh, G4PreCompoundDeuteron.hh, G4PreCompoundHe3.hh, |
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219 | G4PreCompoundTriton.hh, G4PreCompoundNeutron.hh, G4PreCompoundProton.hh |
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220 | |
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221 | |
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222 | 23-August 2007 A.Howard hadr-pre-V09-00-01 |
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223 | ---------------------------------------------- |
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224 | - Development tag incorporating further suggestions/corrections from |
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225 | Jose-Manuel Quesada particularly with respect to light ion production. |
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226 | The following files have been modified: |
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227 | G4PreCompoundIon.cc, G4PreCompoundDeuteron.hh, G4PreCompoundHe3.hh, |
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228 | G4PreCompoundTriton.hh, G4PreCompoundAlpha.hh, G4PreCompoundIon.hh, |
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229 | G4VPreCompoundIon.hh (unused?) |
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230 | |
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231 | |
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232 | 23-July 2007 A.Howard hadr-pre-V09-00-00 |
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233 | ---------------------------------------------- |
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234 | - Development tag incorporating the suggestions/corrections of Jose-Manuel |
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235 | Quesada. These should reflect the literature and units expected for the |
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236 | exciton model. The following files have been modified: |
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237 | G4PreCompoundNucleon.hh, G4VPreCompoundNucleon.hh, G4PreCompoundAlpha.hh, |
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238 | G4PreCompoundHe3.hh, G4PreCompoundDeuteron.hh, G4PreCompoundNeutron.hh, |
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239 | G4PreCompoundProton.hh, G4PreCompoundTriton.hh |
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240 | G4VPreCompoundIon.cc, G4PreCompoundIon.cc, G4PreCompoundModel.cc, |
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241 | G4VPreCompoundFragment.cc, G4PreCompoundTransitions.cc, |
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242 | G4PreCompoundNucleon.cc, G4VPreCompoundNucleon.cc |
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243 | The main changes are: |
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244 | - introducing an Rj factor into the probability calculation, |
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245 | - correcting the units for the Pauli Blocking Factor - missing a g factor, |
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246 | - decreasing the number of charged particles if the number excitons is |
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247 | decreased (previously this number was only increased with increasing |
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248 | excitons). |
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249 | |
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250 | |
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251 | 04-May 2007 G.Folger hadr-pre-V08-02-00 |
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252 | ---------------------------------------------- |
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253 | - G4PreCompoundTransitions.cc: Protect against divide by 0 |
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254 | |
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255 | 19 Aug 2006 Dennis Wright (hadr-pre-V08-01-00) |
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256 | ---------------------------------------------- |
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257 | - exciton_model |
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258 | G4VPreCompoundFragment.hh, .icc : remove meaningless const from |
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259 | methods GetA, GetZ, GetRestA, GetRestZ, GetCoulombBarrier, GetBindingEnergy, |
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260 | GetMaximalKineticEnergy, GetEnergyThreshold, GetEmissionProbability, |
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261 | GetNuclearMass, GetRestNuclearMass and GetReducedMass |
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262 | |
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