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 | // 070523 bug fix for G4FPE_DEBUG on by A. Howard ( and T. Koi) |
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31 | // 08-08-06 delete unnecessary and harmed declaration; Bug Report[857] |
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32 | // |
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33 | #include "G4NeutronHPFission.hh" |
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34 | |
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35 | G4NeutronHPFission::G4NeutronHPFission() |
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36 | :G4HadronicInteraction("NeutronHPFission") |
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37 | { |
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38 | SetMinEnergy( 0.0 ); |
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39 | SetMaxEnergy( 20.*MeV ); |
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40 | if(!getenv("G4NEUTRONHPDATA")) |
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41 | throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files."); |
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42 | dirName = getenv("G4NEUTRONHPDATA"); |
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43 | G4String tString = "/Fission/"; |
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44 | dirName = dirName + tString; |
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45 | numEle = G4Element::GetNumberOfElements(); |
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46 | theFission = new G4NeutronHPChannel[numEle]; |
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47 | |
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48 | for (G4int i=0; i<numEle; i++) |
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49 | { |
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50 | if((*(G4Element::GetElementTable()))[i]->GetZ()>89) |
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51 | { |
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52 | theFission[i].Init((*(G4Element::GetElementTable()))[i], dirName); |
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53 | theFission[i].Register(&theFS); |
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54 | } |
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55 | } |
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56 | } |
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57 | |
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58 | G4NeutronHPFission::~G4NeutronHPFission() |
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59 | { |
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60 | delete [] theFission; |
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61 | } |
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62 | |
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63 | #include "G4NeutronHPThermalBoost.hh" |
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64 | G4HadFinalState * G4NeutronHPFission::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& ) |
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65 | { |
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66 | const G4Material * theMaterial = aTrack.GetMaterial(); |
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67 | G4int n = theMaterial->GetNumberOfElements(); |
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68 | G4int index = theMaterial->GetElement(0)->GetIndex(); |
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69 | if(n!=1) |
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70 | { |
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71 | xSec = new G4double[n]; |
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72 | G4double sum=0; |
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73 | G4int i; |
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74 | const G4double * NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume(); |
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75 | G4double rWeight; |
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76 | G4NeutronHPThermalBoost aThermalE; |
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77 | for (i=0; i<n; i++) |
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78 | { |
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79 | index = theMaterial->GetElement(i)->GetIndex(); |
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80 | rWeight = NumAtomsPerVolume[i]; |
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81 | xSec[i] = theFission[index].GetXsec(aThermalE.GetThermalEnergy(aTrack, |
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82 | theMaterial->GetElement(i), |
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83 | theMaterial->GetTemperature())); |
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84 | xSec[i] *= rWeight; |
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85 | sum+=xSec[i]; |
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86 | } |
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87 | G4double random = G4UniformRand(); |
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88 | G4double running = 0; |
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89 | for (i=0; i<n; i++) |
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90 | { |
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91 | running += xSec[i]; |
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92 | index = theMaterial->GetElement(i)->GetIndex(); |
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93 | //if(random<=running/sum) break; |
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94 | if( sum == 0 || random <= running/sum ) break; |
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95 | } |
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96 | delete [] xSec; |
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97 | } |
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98 | return theFission[index].ApplyYourself(aTrack); |
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99 | } |
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100 | |
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