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2 | // ******************************************************************** |
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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 | // 080721 To be "ClearHistories" effective, the selection scheme of angular distribution is modified by T. Koi |
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31 | // |
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32 | // |
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33 | #include "G4NeutronHPContEnergyAngular.hh" |
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34 | |
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35 | G4ReactionProduct * G4NeutronHPContEnergyAngular::Sample(G4double anEnergy, G4double massCode, G4double /*mass*/) |
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36 | { |
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37 | G4ReactionProduct * result; |
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38 | G4int i(0); |
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39 | G4int it(0); |
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40 | for(i=0;i<nEnergy;i++) |
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41 | { |
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42 | it = i; |
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43 | if(theAngular[i].GetEnergy()>anEnergy) break; |
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44 | } |
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45 | G4double targetMass = GetTarget()->GetMass(); |
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46 | if(it==0) |
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47 | { |
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48 | theAngular[0].SetTarget(GetTarget()); |
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49 | theAngular[0].SetTargetCode(theTargetCode); |
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50 | theAngular[0].SetPrimary(GetNeutron()); |
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51 | result = theAngular[0].Sample(anEnergy, massCode, targetMass, |
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52 | theAngularRep, theInterpolation); |
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53 | currentMeanEnergy = theAngular[0].MeanEnergyOfThisInteraction(); |
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54 | } |
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55 | else |
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56 | { |
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57 | // interpolation through alternating sampling. This needs improvement @@@ |
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58 | // This is the cause of the He3 problem !!!!!!!! |
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59 | // See to it, if you can improve this. |
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60 | //080714 TK commnet Randomizing use angular distribution |
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61 | //080714 TK Always use the upper side distribution. enabling ClearHistories method. |
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62 | //G4double random = G4UniformRand(); |
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63 | //G4double deltaE = theAngular[it].GetEnergy()-theAngular[it-1].GetEnergy(); |
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64 | //G4double offset = theAngular[it].GetEnergy()-anEnergy; |
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65 | //if(random<offset/deltaE) it--; |
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66 | theAngular[it].SetTarget(GetTarget()); |
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67 | theAngular[it].SetTargetCode(theTargetCode); |
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68 | theAngular[it].SetPrimary(GetNeutron()); |
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69 | result = theAngular[it].Sample(anEnergy, massCode, targetMass, |
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70 | theAngularRep, theInterpolation); |
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71 | currentMeanEnergy = theAngular[it].MeanEnergyOfThisInteraction(); |
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72 | } |
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73 | return result; |
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74 | } |
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75 | |
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76 | G4double G4NeutronHPContEnergyAngular:: |
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77 | MeanEnergyOfThisInteraction() |
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78 | { |
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79 | G4double result(0); |
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80 | if(currentMeanEnergy<-1) |
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81 | { |
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82 | throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPContEnergyAngular: Logical error in Product class"); |
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83 | } |
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84 | else |
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85 | { |
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86 | result = currentMeanEnergy; |
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87 | } |
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88 | currentMeanEnergy = -2; |
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89 | return result; |
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90 | } |
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91 | |
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92 | |
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93 | |
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94 | void G4NeutronHPContEnergyAngular::ClearHistories() |
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95 | { |
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96 | if ( theAngular!= NULL ) |
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97 | { |
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98 | for ( G4int i = 0 ; i< nEnergy ; i++ ) |
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99 | theAngular[i].ClearHistories(); |
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100 | } |
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101 | } |
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