Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 // 27 // 28 // 29 // Geant4 Hadron Charge Exchange Process -- so 30 // 31 // Created 21 April 2006 V.Ivanchenko 32 // 33 // Modified: 34 // 24-Apr-06 V.Ivanchenko add neutron scatteri 35 // 07-Jun-06 V.Ivanchenko fix problem of rotat 36 // 25-Jul-06 V.Ivanchenko add 19 MeV low energ 37 // 23-Jan-07 V.Ivanchenko add cross section in 38 // and do not use CHIPS 39 // 14-Sep-12 M.Kelsey -- Pass subType code to 40 // 06-Aug-15 A.Ribon migrating to G4Pow 41 42 #include "G4ChargeExchangeProcess.hh" 43 #include "globals.hh" 44 #include "G4SystemOfUnits.hh" 45 #include "G4CrossSectionDataStore.hh" 46 #include "G4CrossSectionElastic.hh" 47 #include "G4ComponentGGHadronNucleusXsc.hh" 48 #include "G4Element.hh" 49 #include "G4ElementVector.hh" 50 #include "G4IsotopeVector.hh" 51 #include "G4Neutron.hh" 52 #include "G4Proton.hh" 53 #include "G4PhysicsLinearVector.hh" 54 55 #include "G4Pow.hh" 56 57 58 G4ChargeExchangeProcess::G4ChargeExchangeProce 59 : G4HadronicProcess(procName,fChargeExchange 60 { 61 G4cout << "###=== The class G4ChargeExchange 62 G4cout << "###=== It will be removed at the 63 thEnergy = 20.*MeV; 64 pPDG = 0; 65 verboseLevel= 1; 66 AddDataSet( new G4CrossSectionElastic( new G 67 theProton = G4Proton::Proton(); 68 theNeutron = G4Neutron::Neutron(); 69 theAProton = G4AntiProton::AntiProton(); 70 theANeutron = G4AntiNeutron::AntiNeutron(); 71 thePiPlus = G4PionPlus::PionPlus(); 72 thePiMinus = G4PionMinus::PionMinus(); 73 thePiZero = G4PionZero::PionZero(); 74 theKPlus = G4KaonPlus::KaonPlus(); 75 theKMinus = G4KaonMinus::KaonMinus(); 76 theK0S = G4KaonZeroShort::KaonZeroShort 77 theK0L = G4KaonZeroLong::KaonZeroLong() 78 theL = G4Lambda::Lambda(); 79 theAntiL = G4AntiLambda::AntiLambda(); 80 theSPlus = G4SigmaPlus::SigmaPlus(); 81 theASPlus = G4AntiSigmaPlus::AntiSigmaPlus 82 theSMinus = G4SigmaMinus::SigmaMinus(); 83 theASMinus = G4AntiSigmaMinus::AntiSigmaMin 84 theS0 = G4SigmaZero::SigmaZero(); 85 theAS0 = G4AntiSigmaZero::AntiSigmaZero 86 theXiMinus = G4XiMinus::XiMinus(); 87 theXi0 = G4XiZero::XiZero(); 88 theAXiMinus = G4AntiXiMinus::AntiXiMinus(); 89 theAXi0 = G4AntiXiZero::AntiXiZero(); 90 theOmega = G4OmegaMinus::OmegaMinus(); 91 theAOmega = G4AntiOmegaMinus::AntiOmegaMin 92 theD = G4Deuteron::Deuteron(); 93 theT = G4Triton::Triton(); 94 theA = G4Alpha::Alpha(); 95 theHe3 = G4He3::He3(); 96 } 97 98 G4ChargeExchangeProcess::~G4ChargeExchangeProc 99 { 100 if (factors) delete factors; 101 } 102 103 void G4ChargeExchangeProcess:: 104 BuildPhysicsTable(const G4ParticleDefinition& 105 { 106 if(first) { 107 first = false; 108 theParticle = &aParticleType; 109 pPDG = theParticle->GetPDGEncoding(); 110 111 store = G4HadronicProcess::GetCrossSection 112 113 const size_t n = 10; 114 if(theParticle == thePiPlus || theParticle 115 theParticle == theKPlus || theParticle 116 theParticle == theK0S || theParticle 117 118 G4double F[n] = {0.33,0.27,0.29,0.31,0.2 119 factors = new G4PhysicsLinearVector(0.0, 120 for(size_t i=0; i<n; i++) {factors->PutV 121 122 } else { 123 124 G4double F[n] = {0.50,0.45,0.40,0.35,0.3 125 factors = new G4PhysicsLinearVector(0.0, 126 for(size_t i=0; i<n; i++) {factors->PutV 127 } 128 129 if(verboseLevel>1) 130 G4cout << "G4ChargeExchangeProcess for " 131 << theParticle->GetParticleName() 132 << G4endl; 133 } 134 G4HadronicProcess::BuildPhysicsTable(aPartic 135 } 136 137 G4double G4ChargeExchangeProcess::GetElementCr 138 const G4Dyna 139 const G4Element* elm, 140 const G4Material* mat) 141 { 142 // gives the microscopic cross section in GE 143 G4double Z = elm->GetZ(); 144 G4int iz = G4int(Z); 145 G4double x = 0.0; 146 147 // The process is effective only above the t 148 if(iz == 1 || dp->GetKineticEnergy() < thEne 149 150 if(verboseLevel>1) 151 G4cout << "G4ChargeExchangeProcess compute 152 << elm->GetName() 153 << G4endl; 154 x = store->GetCrossSection(dp, elm, mat); 155 156 if(verboseLevel>1) 157 G4cout << "G4ChargeExchangeProcess cross(m 158 << " E(MeV)= " << dp->GetKineticEn 159 << " " << theParticle->GetParticleName() 160 << " in Z= " << iz 161 << G4endl; 162 G4bool b; 163 G4double A = elm->GetN(); 164 G4double ptot = dp->GetTotalMomentum(); 165 x *= factors->GetValue(ptot, b)/G4Pow::GetIn 166 if(theParticle == thePiPlus || theParticle = 167 theParticle == theKPlus || theParticle = 168 { x *= (1.0 - Z/A); } 169 170 else if(theParticle == thePiMinus || thePart 171 theParticle == theKMinus || thePart 172 { x *= Z/A; } 173 174 if(theParticle->GetPDGMass() < GeV) { 175 if(ptot > 2.*GeV) x *= 4.0*GeV*GeV/(ptot*p 176 } 177 178 if(verboseLevel>1) 179 G4cout << "Corrected cross(mb)= " << x/mil 180 181 return x; 182 } 183 184 G4bool G4ChargeExchangeProcess:: 185 IsApplicable(const G4ParticleDefinition& aPart 186 { 187 const G4ParticleDefinition* p = &aParticleTy 188 return (p == thePiPlus || p == thePiMinus || 189 p == theProton || p == theNeutron || 190 p == theAProton|| p == theANeutron|| 191 p == theKPlus || p == theKMinus || 192 p == theK0S || p == theK0L || 193 p == theL); 194 } 195 196 void G4ChargeExchangeProcess:: 197 DumpPhysicsTable(const G4ParticleDefinition& a 198 { 199 store->DumpPhysicsTable(aParticleType); 200 } 201