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2 | // ******************************************************************** |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4StatMFMacroNucleon.cc,v 1.6 2008/07/25 11:20:47 vnivanch Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-02 $ |
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29 | // |
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30 | // Hadronic Process: Nuclear De-excitations |
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31 | // by V. Lara |
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32 | |
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33 | #include "G4StatMFMacroNucleon.hh" |
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34 | |
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35 | // Operators |
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36 | |
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37 | G4StatMFMacroNucleon & G4StatMFMacroNucleon:: |
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38 | operator=(const G4StatMFMacroNucleon & ) |
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39 | { |
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40 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::operator= meant to not be accessable"); |
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41 | return *this; |
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42 | } |
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43 | |
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44 | |
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45 | G4bool G4StatMFMacroNucleon::operator==(const G4StatMFMacroNucleon & ) const |
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46 | { |
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47 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::operator== meant to not be accessable"); |
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48 | return false; |
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49 | } |
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50 | |
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51 | |
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52 | G4bool G4StatMFMacroNucleon::operator!=(const G4StatMFMacroNucleon & ) const |
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53 | { |
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54 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::operator!= meant to not be accessable"); |
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55 | return true; |
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56 | } |
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57 | |
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58 | G4double G4StatMFMacroNucleon::CalcMeanMultiplicity(const G4double FreeVol, const G4double mu, |
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59 | const G4double nu, const G4double T) |
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60 | { |
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61 | if (T <= 0.0) throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::CalcMeanMultiplicity: Temperature less or equal 0"); |
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62 | const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T); |
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63 | |
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64 | const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght; |
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65 | |
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66 | const G4double degeneracy = 2.0; |
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67 | |
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68 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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69 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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70 | |
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71 | G4double exponent_proton = (mu+nu-Coulomb)/T; |
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72 | G4double exponent_neutron = mu/T; |
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73 | |
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74 | if (exponent_neutron > 700.0) exponent_neutron = 700.0; |
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75 | if (exponent_proton > 700.0) exponent_proton = 700.0; |
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76 | |
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77 | _NeutronMeanMultiplicity = (degeneracy*FreeVol/lambda3)*std::exp(exponent_neutron); |
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78 | |
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79 | _ProtonMeanMultiplicity = (degeneracy*FreeVol/lambda3)*std::exp(exponent_proton); |
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80 | |
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81 | |
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82 | |
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83 | return _MeanMultiplicity = _NeutronMeanMultiplicity + _ProtonMeanMultiplicity; |
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84 | |
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85 | } |
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86 | |
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87 | |
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88 | G4double G4StatMFMacroNucleon::CalcEnergy(const G4double T) |
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89 | { |
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90 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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91 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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92 | |
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93 | return _Energy = Coulomb * theZARatio * theZARatio + (3./2.) * T; |
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94 | |
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95 | } |
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96 | |
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97 | G4double G4StatMFMacroNucleon::CalcEntropy(const G4double T, const G4double FreeVol) |
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98 | { |
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99 | const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T); |
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100 | const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght; |
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101 | |
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102 | G4double NeutronEntropy = 0.0; |
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103 | if (_NeutronMeanMultiplicity > 0.0) |
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104 | NeutronEntropy = _NeutronMeanMultiplicity*(5./2.+ |
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105 | std::log(2.0*static_cast<G4double>(theA)*FreeVol/ |
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106 | (lambda3*_NeutronMeanMultiplicity))); |
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107 | |
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108 | |
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109 | G4double ProtonEntropy = 0.0; |
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110 | if (_ProtonMeanMultiplicity > 0.0) |
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111 | ProtonEntropy = _ProtonMeanMultiplicity*(5./2.+ |
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112 | std::log(2.0*static_cast<G4double>(theA)*FreeVol/ |
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113 | (lambda3*_ProtonMeanMultiplicity))); |
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114 | |
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115 | |
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116 | return NeutronEntropy+ProtonEntropy; |
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117 | } |
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118 | |
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