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 | // neutron_hp -- source file |
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27 | // J.P. Wellisch, Nov-1996 |
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28 | // A prototype of the low energy neutron transport model. |
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29 | // |
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30 | #include "G4NeutronHPDeExGammas.hh" |
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31 | |
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32 | void G4NeutronHPDeExGammas::Init(std::ifstream & aDataFile) |
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33 | { |
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34 | G4NeutronHPGamma ** theGammas = new G4NeutronHPGamma * [50]; |
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35 | G4int nGammas = 0; |
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36 | G4int nBuff = 50; |
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37 | for(;;) |
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38 | { |
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39 | G4NeutronHPGamma * theNew = new G4NeutronHPGamma; |
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40 | if(!theNew->Init(aDataFile)) |
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41 | { |
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42 | delete theNew; |
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43 | break; |
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44 | } |
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45 | else |
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46 | { |
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47 | if(nGammas==nBuff) |
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48 | { |
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49 | nBuff+=50; |
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50 | G4NeutronHPGamma ** buffer = new G4NeutronHPGamma * [nBuff]; |
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51 | for(G4int i=0;i<nGammas;i++) buffer[i] = theGammas[i]; |
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52 | delete [] theGammas; |
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53 | theGammas = buffer; |
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54 | } |
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55 | theGammas[nGammas] = theNew; |
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56 | nGammas++; |
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57 | } |
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58 | } |
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59 | // all gammas are in. Now sort them into levels. |
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60 | |
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61 | // count the levels |
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62 | |
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63 | G4double currentE = 0; |
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64 | G4double nextE = 0; |
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65 | G4int i; |
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66 | G4double epsilon = 0.01*keV; |
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67 | for(i=0; i<nGammas; i++) |
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68 | { |
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69 | nextE = theGammas[i]->GetLevelEnergy(); |
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70 | if(std::abs(currentE-nextE)>epsilon) nLevels++; |
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71 | currentE = nextE; |
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72 | } |
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73 | |
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74 | // Build the levels |
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75 | |
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76 | theLevels = new G4NeutronHPLevel[nLevels]; |
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77 | levelStart = new G4int [nLevels]; |
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78 | levelSize = new G4int [nLevels]; |
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79 | |
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80 | // fill the levels |
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81 | |
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82 | currentE = 0; |
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83 | nextE = 0; |
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84 | G4int levelCounter=-1; |
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85 | for(i=0; i<nGammas; i++) |
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86 | { |
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87 | nextE = theGammas[i]->GetLevelEnergy(); |
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88 | if(std::abs(currentE-nextE)>epsilon) |
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89 | { |
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90 | levelCounter++; |
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91 | levelStart[levelCounter] = i; |
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92 | levelSize[levelCounter] = 0; |
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93 | } |
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94 | levelSize[levelCounter]++; |
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95 | currentE = nextE; |
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96 | } |
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97 | |
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98 | for(i=0; i<nLevels; i++) |
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99 | { |
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100 | theLevels[i].SetNumberOfGammas(levelSize[i]); |
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101 | for(G4int ii=levelStart[i]; ii<levelStart[i]+levelSize[i]; ii++) |
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102 | { |
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103 | theLevels[i].SetGamma(ii-levelStart[i], theGammas[ii]); |
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104 | } |
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105 | } |
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106 | |
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107 | // set the next relation in the gammas. |
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108 | G4double levelE, gammaE, currentLevelE; |
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109 | G4double min; |
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110 | for(i=0; i<nGammas; i++) |
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111 | { |
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112 | G4int it=-1; |
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113 | gammaE = theGammas[i]->GetGammaEnergy(); |
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114 | currentLevelE = theGammas[i]->GetLevelEnergy(); |
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115 | min = currentLevelE-gammaE-epsilon; |
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116 | for(G4int ii=0; ii<nLevels; ii++) |
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117 | { |
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118 | levelE = theLevels[ii].GetLevelEnergy(); |
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119 | if(std::abs(currentLevelE-(levelE+gammaE))<min) |
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120 | { |
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121 | min = std::abs(currentLevelE-(levelE+gammaE)); |
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122 | it = ii; |
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123 | } |
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124 | } |
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125 | if(it!=-1) theGammas[i]->SetNext(&theLevels[it]); |
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126 | } |
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127 | // some garbage collection |
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128 | |
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129 | delete [] theGammas; |
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130 | |
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131 | // and we are Done. |
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132 | } |
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