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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // 27 // ------------------------------------------- 27 // ------------------------------------------------------------------- 28 // GEANT4 Class file 28 // GEANT4 Class file 29 // 29 // 30 // For information related to this code c 30 // For information related to this code contact: 31 // 31 // 32 // File name: G4XnpTotalLowE 32 // File name: G4XnpTotalLowE 33 // 33 // 34 // Author: 34 // Author: 35 // 35 // 36 // Creation date: 15 April 1999 36 // Creation date: 15 April 1999 37 // 37 // 38 // Modifications: 38 // Modifications: 39 // 39 // 40 // Neutron-Proton total cross section 40 // Neutron-Proton total cross section 41 // Linear interpolation from data table 41 // Linear interpolation from data table 42 // 42 // 43 // ------------------------------------------- 43 // ------------------------------------------------------------------- 44 44 45 #include "globals.hh" 45 #include "globals.hh" 46 #include "G4ios.hh" 46 #include "G4ios.hh" 47 #include "G4Exp.hh" << 48 #include "G4Log.hh" << 49 #include "G4SystemOfUnits.hh" 47 #include "G4SystemOfUnits.hh" 50 #include "G4XnpTotalLowE.hh" 48 #include "G4XnpTotalLowE.hh" 51 #include "G4KineticTrack.hh" 49 #include "G4KineticTrack.hh" 52 #include "G4ParticleDefinition.hh" 50 #include "G4ParticleDefinition.hh" 53 #include "G4PhysicsVector.hh" 51 #include "G4PhysicsVector.hh" 54 #include "G4PhysicsLogVector.hh" << 52 #include "G4PhysicsLnVector.hh" >> 53 #include "G4ParticleDefinition.hh" 55 #include "G4Proton.hh" 54 #include "G4Proton.hh" 56 #include "G4Neutron.hh" 55 #include "G4Neutron.hh" 57 56 58 const G4double G4XnpTotalLowE::_lowLimit = 0.; 57 const G4double G4XnpTotalLowE::_lowLimit = 0.; 59 const G4double G4XnpTotalLowE::_highLimit = 3. 58 const G4double G4XnpTotalLowE::_highLimit = 3.*GeV; 60 59 61 // Low energy limit of the cross-section table 60 // Low energy limit of the cross-section table (in GeV) 62 // Units are assigned when filling the Physics << 61 // Units are assigned while filling the PhysicsVector 63 const G4double G4XnpTotalLowE::_eMinTable = 1. 62 const G4double G4XnpTotalLowE::_eMinTable = 1.8964808; 64 const G4double G4XnpTotalLowE::_eStepLog = 0.0 63 const G4double G4XnpTotalLowE::_eStepLog = 0.01; 65 64 66 // Cross-sections in mb 65 // Cross-sections in mb 67 // Units are assigned when filling the Physics << 66 // Units are assigned while filling the PhysicsVector 68 const G4int G4XnpTotalLowE::_tableSize = 101; 67 const G4int G4XnpTotalLowE::_tableSize = 101; 69 const G4double G4XnpTotalLowE::_sigmaTable[101 68 const G4double G4XnpTotalLowE::_sigmaTable[101] = 70 { 69 { 71 1500.0, 70 1500.0, 72 248.20, 93.38, 55.26, 44.50, 41.33, 38.48, 3 71 248.20, 93.38, 55.26, 44.50, 41.33, 38.48, 37.20, 35.98, 73 35.02, 34.47, 34.37, 34.67, 35.23, 35.97, 36 72 35.02, 34.47, 34.37, 34.67, 35.23, 35.97, 36.75, 37.37, 74 37.77, 38.03, 38.40, 38.83, 39.26, 39.67, 40 73 37.77, 38.03, 38.40, 38.83, 39.26, 39.67, 40.06, 40.45, 75 40.79, 41.06, 41.31, 41.52, 41.70, 41.81, 41 74 40.79, 41.06, 41.31, 41.52, 41.70, 41.81, 41.87, 41.98, 76 42.12, 42.29, 42.55, 42.82, 43.01, 43.12, 43 75 42.12, 42.29, 42.55, 42.82, 43.01, 43.12, 43.16, 43.14, 77 43.06, 42.95, 42.81, 42.67, 42.54, 42.45, 42 76 43.06, 42.95, 42.81, 42.67, 42.54, 42.45, 42.38, 42.33, 78 42.30, 42.29, 42.28, 42.26, 42.24, 42.21, 42 77 42.30, 42.29, 42.28, 42.26, 42.24, 42.21, 42.17, 42.14, 79 42.10, 42.07, 42.06, 42.05, 42.04, 42.03, 42 78 42.10, 42.07, 42.06, 42.05, 42.04, 42.03, 42.02, 42.00, 80 41.97, 41.94, 41.89, 41.84, 41.79, 41.73, 41 79 41.97, 41.94, 41.89, 41.84, 41.79, 41.73, 41.67, 41.61, 81 41.55, 41.49, 41.44, 41.38, 41.34, 41.31, 41 80 41.55, 41.49, 41.44, 41.38, 41.34, 41.31, 41.29, 41.28, 82 41.27, 41.28, 41.30, 41.33, 41.36, 41.40, 41 81 41.27, 41.28, 41.30, 41.33, 41.36, 41.40, 41.44, 41.49, 83 41.50, 41.51, 41.51, 41.51, 41.52, 41.51, 41 82 41.50, 41.51, 41.51, 41.51, 41.52, 41.51, 41.51, 41.50, 84 41.50, 41.49, 41.47, 41.46 83 41.50, 41.49, 41.47, 41.46 85 }; 84 }; 86 85 87 86 88 G4XnpTotalLowE::G4XnpTotalLowE() 87 G4XnpTotalLowE::G4XnpTotalLowE() 89 { 88 { 90 // Cross-sections are available in the range 89 // Cross-sections are available in the range (_eMin,_eMax) 91 90 92 _eMin = _eMinTable * GeV; 91 _eMin = _eMinTable * GeV; 93 _eMin = G4Exp(G4Log(_eMinTable)-_eStepLog)*G << 92 _eMin = std::exp(std::log(_eMinTable)-_eStepLog)*GeV; 94 _eMax = G4Exp(G4Log(_eMinTable) + _tableSize << 93 _eMax = std::exp(std::log(_eMinTable) + _tableSize * _eStepLog) * GeV; 95 94 96 // Protections: validity limits must be comp 95 // Protections: validity limits must be compatible with available data 97 // @@GF this ought to be _lowLimit < _eMin 96 // @@GF this ought to be _lowLimit < _eMin 98 if (_eMin < _lowLimit) 97 if (_eMin < _lowLimit) 99 throw G4HadronicException(__FILE__, __LINE 98 throw G4HadronicException(__FILE__, __LINE__, "G4XnpTotalLowE::G4XnpTotalLowE - Low energy limit not valid"); 100 99 101 if (_highLimit > _eMax) 100 if (_highLimit > _eMax) 102 throw G4HadronicException(__FILE__, __LINE 101 throw G4HadronicException(__FILE__, __LINE__, "G4XnpTotalLowE::G4XnpTotalLowE - High energy limit not valid"); 103 102 104 _sigma = new G4PhysicsLogVector(_eMin,_eMax, << 103 _sigma = new G4PhysicsLnVector(_eMin,_eMax,_tableSize); 105 G4int i; 104 G4int i; 106 for (i=0; i<_tableSize; i++) 105 for (i=0; i<_tableSize; i++) 107 { 106 { 108 G4double value = _sigmaTable[i] * millib 107 G4double value = _sigmaTable[i] * millibarn; 109 _sigma->PutValue(i,value); 108 _sigma->PutValue(i,value); 110 } 109 } 111 } 110 } 112 111 113 112 114 G4XnpTotalLowE::~G4XnpTotalLowE() 113 G4XnpTotalLowE::~G4XnpTotalLowE() 115 { 114 { 116 if (_sigma) delete _sigma; << 115 delete _sigma; 117 _sigma=0; << 118 } 116 } 119 117 120 118 121 G4bool G4XnpTotalLowE::operator==(const G4XnpT 119 G4bool G4XnpTotalLowE::operator==(const G4XnpTotalLowE &right) const 122 { 120 { 123 return (this == (G4XnpTotalLowE *) &right); 121 return (this == (G4XnpTotalLowE *) &right); 124 } 122 } 125 123 126 124 127 G4bool G4XnpTotalLowE::operator!=(const G4XnpT 125 G4bool G4XnpTotalLowE::operator!=(const G4XnpTotalLowE &right) const 128 { 126 { 129 return (this != (G4XnpTotalLowE *) &right); 127 return (this != (G4XnpTotalLowE *) &right); 130 } 128 } 131 129 132 130 133 G4double G4XnpTotalLowE::CrossSection(const G4 131 G4double G4XnpTotalLowE::CrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const 134 { 132 { 135 G4double sigma = 0.; 133 G4double sigma = 0.; 136 G4double sqrtS = (trk1.Get4Momentum() + trk2 134 G4double sqrtS = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag(); 137 G4bool dummy = false; 135 G4bool dummy = false; 138 136 139 const G4ParticleDefinition* proton = G4Proto << 137 G4ParticleDefinition* proton = G4Proton::ProtonDefinition(); 140 const G4ParticleDefinition* neutron = G4Neut << 138 G4ParticleDefinition* neutron = G4Neutron::NeutronDefinition(); 141 139 142 const G4ParticleDefinition* def1 = trk1.GetD << 140 G4ParticleDefinition* def1 = trk1.GetDefinition(); 143 const G4ParticleDefinition* def2 = trk2.GetD << 141 G4ParticleDefinition* def2 = trk2.GetDefinition(); 144 if ( (def1 == proton && def2 == neutron) || 142 if ( (def1 == proton && def2 == neutron) || 145 (def1 == neutron && def2 == proton) ) 143 (def1 == neutron && def2 == proton) ) 146 { 144 { 147 if (sqrtS >= _eMin && sqrtS <= _eMax) 145 if (sqrtS >= _eMin && sqrtS <= _eMax) 148 { 146 { 149 sigma = _sigma->GetValue(sqrtS,dummy); 147 sigma = _sigma->GetValue(sqrtS,dummy); 150 } else if ( sqrtS < _eMin ) 148 } else if ( sqrtS < _eMin ) 151 { 149 { 152 sigma = _sigma->GetValue(_eMin,dummy 150 sigma = _sigma->GetValue(_eMin,dummy); 153 } 151 } 154 } 152 } 155 153 156 return sigma; 154 return sigma; 157 } 155 } 158 156 159 void G4XnpTotalLowE::Print() const 157 void G4XnpTotalLowE::Print() const 160 { 158 { 161 // Dump the cross-section table 159 // Dump the cross-section table 162 160 163 G4cout << Name() << "Cross-section table: " 161 G4cout << Name() << "Cross-section table: " << G4endl; 164 G4bool dummy = false; 162 G4bool dummy = false; 165 G4int i; 163 G4int i; 166 164 167 for (i=0; i<_tableSize; i++) 165 for (i=0; i<_tableSize; i++) 168 { 166 { 169 G4double e = _sigma->GetLowEdgeEnergy(i) 167 G4double e = _sigma->GetLowEdgeEnergy(i) / GeV; 170 G4double sigma = _sigma->GetValue(e,dumm 168 G4double sigma = _sigma->GetValue(e,dummy) / millibarn; 171 G4cout << i << ") e = " << e << " GeV -- 169 G4cout << i << ") e = " << e << " GeV ---- Cross section = " << sigma << " mb " << G4endl; 172 } 170 } 173 171 174 G4VCrossSectionSource::Print(); 172 G4VCrossSectionSource::Print(); 175 } 173 } 176 174 177 175 178 G4String G4XnpTotalLowE::Name() const 176 G4String G4XnpTotalLowE::Name() const 179 { 177 { 180 G4String name("NNTotalLowE"); 178 G4String name("NNTotalLowE"); 181 return name; 179 return name; 182 } 180 } 183 181 184 182 185 G4bool G4XnpTotalLowE::IsValid(G4double e) con 183 G4bool G4XnpTotalLowE::IsValid(G4double e) const 186 { 184 { 187 G4bool answer = InLimits(e,_lowLimit,_highLi 185 G4bool answer = InLimits(e,_lowLimit,_highLimit); 188 186 189 return answer; 187 return answer; 190 } 188 } 191 189 192 190 193 191