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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 // Calculation of the total, elastic and inel 26 // Calculation of the total, elastic and inelastic cross-sections 27 // of anti-nucleon and anti-nucleus interacti 27 // of anti-nucleon and anti-nucleus interactions with nuclei 28 // based on Glauber approach and V. Grishine 28 // based on Glauber approach and V. Grishine formulaes for 29 // interpolations (ref. V.M.Grichine, Eur.Phy 29 // interpolations (ref. V.M.Grichine, Eur.Phys.J., C62(2009) 399; 30 // NIM, B267 (2009) 2460) and our parametriza 30 // NIM, B267 (2009) 2460) and our parametrization of hadron-nucleon 31 // cross-sections 31 // cross-sections 32 // 32 // 33 // 33 // 34 // Created by A.Galoyan and V. Uzhinsky, 18. 34 // Created by A.Galoyan and V. Uzhinsky, 18.11.2010 35 35 36 36 37 #include "G4ComponentAntiNuclNuclearXS.hh" 37 #include "G4ComponentAntiNuclNuclearXS.hh" 38 38 39 #include "G4PhysicalConstants.hh" << 40 #include "G4SystemOfUnits.hh" << 41 #include "G4ParticleTable.hh" 39 #include "G4ParticleTable.hh" 42 #include "G4IonTable.hh" 40 #include "G4IonTable.hh" 43 #include "G4ParticleDefinition.hh" 41 #include "G4ParticleDefinition.hh" 44 #include "G4HadronicException.hh" << 45 42 >> 43 /////////////////////////////////////////////////////////////////////////////// 46 44 47 ////////////////////////////////////////////// << 48 45 49 G4ComponentAntiNuclNuclearXS::G4ComponentAntiN 46 G4ComponentAntiNuclNuclearXS::G4ComponentAntiNuclNuclearXS() 50 : G4VComponentCrossSection("AntiAGlauber"), << 47 : G4VComponentCrossSection("AntiAGlauber"), fUpperLimit( 10000 * GeV ), 51 fRadiusEff(0.0), << 48 fLowerLimit( 10 * MeV ) 52 fTotalXsc(0.0), fElasticXsc(0.0), fInelastic << 53 fAntiHadronNucleonTotXsc(0.0), fAntiHadronNu << 54 Elab(0.0), S(0.0), SqrtS(0) << 55 { 49 { 56 theAProton = G4AntiProton::AntiProton(); << 50 theAProton = G4AntiProton::AntiProton(); 57 theANeutron = G4AntiNeutron::AntiNeutron(); << 51 theANeutron = G4AntiNeutron::AntiNeutron(); 58 theADeuteron = G4AntiDeuteron::AntiDeuteron( << 52 theADeuteron = G4AntiDeuteron::AntiDeuteron(); 59 theATriton = G4AntiTriton::AntiTriton(); << 53 theATriton = G4AntiTriton::AntiTriton(); 60 theAAlpha = G4AntiAlpha::AntiAlpha(); << 54 theAAlpha = G4AntiAlpha::AntiAlpha(); 61 theAHe3 = G4AntiHe3::AntiHe3(); << 55 theAHe3 = G4AntiHe3::AntiHe3(); 62 Mn = 0.93827231; // GeV << 56 63 b0 = 11.92; // GeV^(-2) << 57 Mn = 0.93827231; // GeV 64 b2 = 0.3036; // GeV^(-2) << 58 b0 = 11.92; // GeV^(-2) 65 SqrtS0 = 20.74; // GeV << 59 b2 = 0.3036; // GeV^(-2) 66 S0 = 33.0625; // GeV^2 << 60 SqrtS0 = 20.74; // GeV 67 R0 = 1.0; // default va << 61 S0 = 33.0625; // GeV^2 68 } << 69 62 >> 63 } 70 64 71 ////////////////////////////////////////////// << 65 /////////////////////////////////////////////////////////////////////////////////////// >> 66 // >> 67 // 72 68 73 G4ComponentAntiNuclNuclearXS::~G4ComponentAnti 69 G4ComponentAntiNuclNuclearXS::~G4ComponentAntiNuclNuclearXS() 74 { 70 { 75 } 71 } 76 72 >> 73 //////////////////////////////////////////////////////////////////////////////// 77 74 78 ////////////////////////////////////////////// << 75 void >> 76 G4ComponentAntiNuclNuclearXS::CrossSectionDescription(std::ostream& outFile) const >> 77 { >> 78 outFile << "G4ComponentAntiNuclNuclearXS describes the total, elastic\n" >> 79 << "and inelastic cross sections for the scattering of light\n" >> 80 << "antinuclei from nuclei using the Glauber approach and Grichine\n" >> 81 << "parameterization. It is valid from 10 MeV to 10 TeV incident\n" >> 82 << "energies and applies to antiprotons, antineutrons, antideuterons,\n" >> 83 << "anti3He, antitritons and antialphas. This is a cross section\n" >> 84 << "component which is to be used as part of a cross section data\n" >> 85 << "set.\n"; >> 86 } >> 87 >> 88 //////////////////////////////////////////////////////////////////////////////// 79 // 89 // 80 // Calculation of total CrossSection of Anti-N 90 // Calculation of total CrossSection of Anti-Nucleus - Nucleus 81 91 >> 92 82 G4double G4ComponentAntiNuclNuclearXS::GetTota 93 G4double G4ComponentAntiNuclNuclearXS::GetTotalElementCrossSection 83 (const G4ParticleDefinition* aParticle, G4doub 94 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A) 84 { 95 { 85 if ( aParticle == nullptr ) { << 96 G4double xsection, sigmaTotal, sigmaElastic; 86 G4ExceptionDescription ed; << 97 87 ed << "anti-nucleus with nullptr particle << 98 const G4ParticleDefinition* theParticle = aParticle; 88 G4Exception( "G4ComponentAntiNuclNuclearXS << 99 89 "antiNuclNuclearXS001", JustW << 100 sigmaTotal = GetAntiHadronNucleonTotCrSc(theParticle,kinEnergy); 90 return 0.0; << 101 sigmaElastic = GetAntiHadronNucleonElCrSc(theParticle,kinEnergy); 91 } << 92 << 93 const G4ParticleDefinition* theParticle = aP << 94 G4double sigmaTotal = GetAntiHadronNucleonTo << 95 102 96 // calculation of squared radius of NN-coll << 103 // calculation of squared radius of NN-collision 97 G4int i(-1), j(-1); << 104 fRadiusNN2=sigmaTotal*sigmaTotal*0.1/(8.*sigmaElastic*pi) ; //fm^2 98 if ( theParticle == theAProton || << 105 99 theParticle == theANeutron ) { i=0; } << 106 // calculation of effective nuclear radius for Pbar and Nbar interactions (can be changed) 100 else if ( theParticle == theADeuteron ) { i= << 107 101 else if ( theParticle == theATriton ) { i= << 108 if ( (theParticle == theAProton) || (theParticle == theANeutron) ) 102 else if ( theParticle == theAHe3 ) { i= << 109 { 103 else if ( theParticle == theAAlpha ) { i= << 110 if(A==1) 104 else {}; << 111 { fTotalXsc = sigmaTotal * millibarn; 105 << 112 return fTotalXsc; } 106 if ( i < 0 && ( ! theParticle->IsAntiHypern << 113 107 G4ExceptionDescription ed; << 114 fRadiusEff = 1.34*std::pow(A,0.23)+1.35/std::pow(A,1./3.); //fm 108 ed << "Unknown anti-nucleus : " << thePart << 115 109 << "Target (Z, A)=(" << Z << "," << A < << 116 if( (Z==1) && (A==2) ) fRadiusEff = 3.800; //fm 110 G4Exception( "G4ComponentAntiNuclNuclearXS << 117 if( (Z==1) && (A==3) ) fRadiusEff = 3.300; 111 "antiNuclNuclearXS002", JustW << 118 if( (Z==2) && (A==3) ) fRadiusEff = 3.300; >> 119 if( (Z==2) && (A==4) ) fRadiusEff = 2.376; 112 } 120 } >> 121 >> 122 //calculation of effective nuclear radius for AntiDeuteron interaction (can be changed) >> 123 if (theParticle == theADeuteron) >> 124 { fRadiusEff = 1.46 * std::pow(A,0.21) + 1.45 / std::pow(A,1./3.); >> 125 >> 126 if( (Z==1) && (A==2) ) fRadiusEff = 3.238; //fm >> 127 if( (Z==1) && (A==3) ) fRadiusEff = 3.144; >> 128 if( (Z==2) && (A==3) ) fRadiusEff = 3.144; >> 129 if( (Z==2) && (A==4) ) fRadiusEff = 2.544; >> 130 } >> 131 // calculation of effective nuclear radius for AntiHe3 interaction (can be changed) 113 132 114 G4int intA = static_cast<G4int>( A ); << 133 if( (theParticle ==theAHe3) || (theParticle ==theATriton) ) >> 134 { fRadiusEff = 1.40* std::pow(A,0.21)+1.63/std::pow(A,1./3.); 115 135 116 if ( Z == 1 && intA == 1 ) { j=0; } << 136 if( (Z==1) && (A==2) ) fRadiusEff = 3.144; //fm 117 else if ( Z == 1 && intA == 2 ) { j=1; } << 137 if( (Z==1) && (A==3) ) fRadiusEff = 3.075; 118 else if ( Z == 1 && intA == 3 ) { j=2; } << 138 if( (Z==2) && (A==3) ) fRadiusEff = 3.075; 119 else if ( Z == 2 && intA == 3 ) { j=3; } << 139 if( (Z==2) && (A==4) ) fRadiusEff = 2.589; 120 else if ( Z == 2 && intA == 4 ) { j=4; } << 121 else {} << 122 << 123 if ( i < 0 && j >= 0 ) { fRadiusEff = Ref << 124 if ( i == 0 && j == 0 ) return sigmaTotal << 125 if ( i >= 0 && j >= 0 ) { fRadiusEff = Ref << 126 << 127 if ( j < 0 ) { << 128 if ( i == 0 ) { fRadiusEff = 1.34 * << 129 + 1.35 / << 130 else if ( i == 1 ) { fRadiusEff = 1.46 * << 131 + 1.45 / << 132 else if ( i == 2 ) { fRadiusEff = 1.40 * << 133 + 1.63 / << 134 else if ( i == 3 ) { fRadiusEff = 1.40 * << 135 + 1.63 / << 136 else if ( i == 4 ) { fRadiusEff = 1.35 * << 137 + 1.10 / << 138 else if ( i < 0 ) { fRadiusEff = 1.35 * << 139 + 1.10 / theG4P << 140 else {} << 141 } 140 } 142 141 143 G4double R2 = fRadiusEff*fRadiusEff; << 142 //calculation of effective nuclear radius for AntiAlpha interaction (can be changed) 144 G4double ApAt = std::abs(theParticle->GetBar << 143 >> 144 if (theParticle == theAAlpha) >> 145 { >> 146 fRadiusEff = 1.35* std::pow(A,0.21)+1.1/std::pow(A,1./3.); >> 147 >> 148 if( (Z==1) && (A==2) ) fRadiusEff = 2.544; //fm >> 149 if( (Z==1) && (A==3) ) fRadiusEff = 2.589; >> 150 if( (Z==2) && (A==3) ) fRadiusEff = 2.589; >> 151 if( (Z==2) && (A==4) ) fRadiusEff = 2.241; >> 152 >> 153 } 145 154 146 G4double xsection = millibarn*2.*pi*R2*10.*G << 155 G4double R2 = fRadiusEff*fRadiusEff; 147 fTotalXsc = xsection; << 156 G4double REf2 = R2+fRadiusNN2; >> 157 G4double ApAt = std::abs(theParticle->GetBaryonNumber()) * A; >> 158 >> 159 xsection = 2*pi*REf2*10.*std::log(1+(ApAt*sigmaTotal/(2*pi*REf2*10.))); //mb >> 160 xsection =xsection *millibarn; >> 161 fTotalXsc = xsection; 148 162 149 return fTotalXsc; 163 return fTotalXsc; 150 } 164 } 151 165 152 166 153 ////////////////////////////////////////////// << 167 //////////////////////////////////////////////////////////////////////////////// 154 // 168 // 155 // Calculation of total CrossSection of Anti-N 169 // Calculation of total CrossSection of Anti-Nucleus - Nucleus 156 << 170 ////////////////////////////////////////////////////////////////////////////// 157 G4double G4ComponentAntiNuclNuclearXS::GetTota 171 G4double G4ComponentAntiNuclNuclearXS::GetTotalIsotopeCrossSection 158 (const G4ParticleDefinition* aParticle, G4doub 172 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A ) 159 { << 173 { return GetTotalElementCrossSection(aParticle, kinEnergy, Z, (G4double) A); } 160 return GetTotalElementCrossSection(aParticle << 161 } << 162 << 163 174 164 ////////////////////////////////////////////// << 175 //////////////////////////////////////////////////////////////// 165 // Calculation of inelastic CrossSection of An 176 // Calculation of inelastic CrossSection of Anti-Nucleus - Nucleus >> 177 //////////////////////////////////////////////////////////////// 166 178 167 G4double G4ComponentAntiNuclNuclearXS::GetInel 179 G4double G4ComponentAntiNuclNuclearXS::GetInelasticElementCrossSection 168 (const G4ParticleDefinition* aParticle, G4doub 180 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A) 169 { 181 { 170 if ( aParticle == nullptr ) { << 182 G4double inelxsection, sigmaTotal, sigmaElastic; 171 G4ExceptionDescription ed; << 183 172 ed << "anti-nucleus with nullptr particle << 173 G4Exception( "G4ComponentAntiNuclNuclearXS << 174 "antiNuclNuclearXS003", JustW << 175 return 0.0; << 176 } << 177 << 178 const G4ParticleDefinition* theParticle = aP 184 const G4ParticleDefinition* theParticle = aParticle; 179 G4double sigmaTotal = GetAntiHadronNucleon << 185 180 G4double sigmaElastic = GetAntiHadronNucleon << 186 sigmaTotal = GetAntiHadronNucleonTotCrSc(theParticle,kinEnergy); >> 187 sigmaElastic = GetAntiHadronNucleonElCrSc(theParticle,kinEnergy); 181 188 182 // calculation of sqr of radius NN-collision << 189 // calculation of sqr of radius NN-collision 183 G4int i(-1), j(-1); << 190 fRadiusNN2=sigmaTotal*sigmaTotal*0.1/(8.*sigmaElastic*pi); // fm^2 184 if ( theParticle == theAProton || << 191 185 theParticle == theANeutron ) { i=0; } << 192 186 else if ( theParticle == theADeuteron ) { i= << 193 // calculation of effective nuclear radius for Pbar and Nbar interaction (can be changed) 187 else if ( theParticle == theATriton ) { i= << 194 188 else if ( theParticle == theAHe3 ) { i= << 195 if ( (theParticle == theAProton) || (theParticle == theANeutron) ) 189 else if ( theParticle == theAAlpha ) { i= << 196 { 190 else {}; << 197 if (A==1) 191 << 198 { fInelasticXsc = (sigmaTotal - sigmaElastic) * millibarn; 192 if ( i < 0 && ( ! theParticle->IsAntiHypern << 199 return fInelasticXsc; 193 G4ExceptionDescription ed; << 200 } 194 ed << "Unknown anti-nucleus : " << thePart << 201 fRadiusEff = 1.31*std::pow(A, 0.22)+0.9/std::pow(A, 1./3.); //fm 195 << "Target (Z, A)=(" << Z << "," << A < << 202 196 G4Exception( "G4ComponentAntiNuclNuclearXS << 203 if( (Z==1) && (A==2) ) fRadiusEff = 3.582; //fm 197 "antiNuclNuclearXS004", JustW << 204 if( (Z==1) && (A==3) ) fRadiusEff = 3.105; >> 205 if( (Z==2) && (A==3) ) fRadiusEff = 3.105; >> 206 if( (Z==2) && (A==4) ) fRadiusEff = 2.209; 198 } 207 } 199 208 200 G4int intA = static_cast<G4int>( A ); << 209 //calculation of effective nuclear radius for AntiDeuteron interaction (can be changed) 201 210 202 if ( Z == 1 && intA == 1 ) { j=0; } << 211 if (theParticle ==theADeuteron) 203 else if ( Z == 1 && intA == 2 ) { j=1; } << 212 { 204 else if ( Z == 1 && intA == 3 ) { j=2; } << 213 fRadiusEff = 1.38*std::pow(A, 0.21)+1.55/std::pow(A, 1./3.); 205 else if ( Z == 2 && intA == 3 ) { j=3; } << 214 206 else if ( Z == 2 && intA == 4 ) { j=4; } << 215 if( (Z==1) && (A==2) ) fRadiusEff = 3.169; //fm 207 else {} << 216 if( (Z==1) && (A==3) ) fRadiusEff = 3.066; 208 << 217 if( (Z==2) && (A==3) ) fRadiusEff = 3.066; 209 if ( i < 0 && j >= 0 ) { fRadiusEff = Ref << 218 if( (Z==2) && (A==4) ) fRadiusEff = 2.498; 210 if ( i == 0 && j == 0 ) return (sigmaTotal << 211 if ( i >= 0 && j >= 0 ) { fRadiusEff = Ref << 212 << 213 if ( j < 0) { << 214 if ( i == 0 ) { fRadiusEff = 1.31*th << 215 + 0.90/th << 216 else if ( i == 1 ) { fRadiusEff = 1.38*th << 217 + 1.55/th << 218 else if ( i == 2 ) { fRadiusEff = 1.34*th << 219 + 1.51/th << 220 else if ( i == 3 ) { fRadiusEff = 1.34*th << 221 + 1.51/th << 222 else if ( i == 4 ) { fRadiusEff = 1.30*th << 223 + 1.05/th << 224 else if ( i < 0 ) { fRadiusEff = 1.30*th << 225 + 1.05/th << 226 else {} << 227 } 219 } 228 220 229 G4double R2 = fRadiusEff*fRadiusEff; << 221 //calculation of effective nuclear radius for AntiHe3 interaction (can be changed) 230 G4double ApAt = std::abs(theParticle->GetBar << 222 >> 223 if( (theParticle ==theAHe3) || (theParticle ==theATriton) ) >> 224 { >> 225 fRadiusEff = 1.34 * std::pow(A, 0.21)+1.51/std::pow(A, 1./3.); >> 226 >> 227 if( (Z==1) && (A==2) ) fRadiusEff = 3.066; //fm >> 228 if( (Z==1) && (A==3) ) fRadiusEff = 2.973; >> 229 if( (Z==2) && (A==3) ) fRadiusEff = 2.973; >> 230 if( (Z==2) && (A==4) ) fRadiusEff = 2.508; >> 231 >> 232 } 231 233 232 G4double inelxsection = millibarn*pi*R2*10.* << 234 //calculation of effective nuclear radius for AntiAlpha interaction (can be changed) 233 fInelasticXsc = inelxsection; << 234 235 >> 236 if (theParticle == theAAlpha) >> 237 { >> 238 fRadiusEff = 1.3*std::pow(A, 0.21)+1.05/std::pow(A, 1./3.); >> 239 >> 240 if( (Z==1) && (A==2) ) fRadiusEff = 2.498; //fm >> 241 if( (Z==1) && (A==3) ) fRadiusEff = 2.508; >> 242 if( (Z==2) && (A==3) ) fRadiusEff = 2.508; >> 243 if( (Z==2) && (A==4) ) fRadiusEff = 2.158; >> 244 } >> 245 G4double R2 = fRadiusEff*fRadiusEff; >> 246 G4double REf2 = R2+fRadiusNN2; >> 247 G4double ApAt= std::abs(theParticle->GetBaryonNumber()) * A; >> 248 >> 249 inelxsection = pi*REf2 *10* std::log(1+(ApAt*sigmaTotal/(pi*REf2*10.))); //mb >> 250 inelxsection = inelxsection * millibarn; >> 251 fInelasticXsc = inelxsection; 235 return fInelasticXsc; 252 return fInelasticXsc; 236 } 253 } 237 254 238 << 255 /////////////////////////////////////////////////////////////////////////////// 239 ////////////////////////////////////////////// << 240 // 256 // 241 // Calculates Inelastic Anti-nucleus-Nucleus c 257 // Calculates Inelastic Anti-nucleus-Nucleus cross-section 242 << 258 // 243 G4double G4ComponentAntiNuclNuclearXS::GetInel 259 G4double G4ComponentAntiNuclNuclearXS::GetInelasticIsotopeCrossSection 244 (const G4ParticleDefinition* aParticle, G4doub 260 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A) 245 { << 261 {return GetInelasticElementCrossSection(aParticle, kinEnergy, Z, (G4double) A); } 246 return GetInelasticElementCrossSection(aPart << 262 247 } << 248 263 249 264 250 ////////////////////////////////////////////// << 265 /////////////////////////////////////////////////////////////////////////////// 251 // 266 // 252 // Calculates elastic Anti-nucleus-Nucleus cro 267 // Calculates elastic Anti-nucleus-Nucleus cross-section as Total - Inelastic 253 << 268 // 254 G4double G4ComponentAntiNuclNuclearXS::GetElas 269 G4double G4ComponentAntiNuclNuclearXS::GetElasticElementCrossSection 255 (const G4ParticleDefinition* aParticle, G4doub 270 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4double A) 256 { 271 { 257 fElasticXsc = GetTotalElementCrossSection(aP << 272 fElasticXsc = GetTotalElementCrossSection(aParticle, kinEnergy, Z, A)- 258 GetInelasticElementCrossSectio << 273 GetInelasticElementCrossSection(aParticle, kinEnergy, Z, A); 259 if (fElasticXsc < 0.) fElasticXsc = 0.; << 274 260 return fElasticXsc; << 275 if (fElasticXsc < 0.) fElasticXsc = 0.; 261 } << 262 276 >> 277 return fElasticXsc; >> 278 } 263 279 264 ////////////////////////////////////////////// << 280 /////////////////////////////////////////////////////////////////////////////// 265 // 281 // 266 // Calculates elastic Anti-nucleus-Nucleus cro 282 // Calculates elastic Anti-nucleus-Nucleus cross-section 267 << 283 // 268 G4double G4ComponentAntiNuclNuclearXS::GetElas 284 G4double G4ComponentAntiNuclNuclearXS::GetElasticIsotopeCrossSection 269 (const G4ParticleDefinition* aParticle, G4doub 285 (const G4ParticleDefinition* aParticle, G4double kinEnergy, G4int Z, G4int A) 270 { << 286 { return GetElasticElementCrossSection(aParticle, kinEnergy, Z, (G4double) A); } 271 return GetElasticElementCrossSection(aPartic << 272 } << 273 287 274 288 275 ////////////////////////////////////////////// << 289 /////////////////////////////////////////////////////////////////////////////////// 276 // Calculation of Antihadron - hadron Total C 290 // Calculation of Antihadron - hadron Total Cross-section 277 291 278 G4double G4ComponentAntiNuclNuclearXS::GetAnti 292 G4double G4ComponentAntiNuclNuclearXS::GetAntiHadronNucleonTotCrSc 279 (const G4ParticleDefinition* aParticle, G4doub 293 (const G4ParticleDefinition* aParticle, G4double kinEnergy) 280 { 294 { 281 G4double xsection, Pmass, Energy, momentum; 295 G4double xsection, Pmass, Energy, momentum; 282 const G4ParticleDefinition* theParticle = aP 296 const G4ParticleDefinition* theParticle = aParticle; 283 Pmass=theParticle->GetPDGMass(); 297 Pmass=theParticle->GetPDGMass(); 284 Energy=Pmass+kinEnergy; 298 Energy=Pmass+kinEnergy; 285 momentum=std::sqrt(Energy*Energy-Pmass*Pmass 299 momentum=std::sqrt(Energy*Energy-Pmass*Pmass)/std::abs(theParticle->GetBaryonNumber()); 286 G4double Plab = momentum / GeV; << 300 G4double Plab = momentum / GeV/std::abs(aParticle->GetBaryonNumber()); // Uzhi 24 Nov. 2011 >> 301 >> 302 if(Plab < 0.1) { Plab = 0.1; } // Uzhi 24 Nov. 2011 287 303 288 G4double B, SigAss; 304 G4double B, SigAss; 289 G4double C, d1, d2, d3; << 305 G4double C, d1, d2, d3 ; >> 306 290 Elab = std::sqrt(Mn*Mn + Plab*Plab); / 307 Elab = std::sqrt(Mn*Mn + Plab*Plab); // GeV 291 S = 2.*Mn*Mn + 2. *Mn*Elab; / 308 S = 2.*Mn*Mn + 2. *Mn*Elab; // GeV^2 292 SqrtS = std::sqrt(S); / 309 SqrtS = std::sqrt(S); // GeV 293 B = b0+b2*G4Log(SqrtS/SqrtS0)*G4Log(S << 310 294 SigAss = 36.04 +0.304*G4Log(S/S0)*G4Log(S/ << 311 B = b0+b2*std::log(SqrtS/SqrtS0)*std::log(SqrtS/SqrtS0); //GeV^(-2) >> 312 SigAss = 36.04 +0.304*std::log(S/S0)*std::log(S/S0); //mb 295 R0 = std::sqrt(0.40874044*SigAss - B); 313 R0 = std::sqrt(0.40874044*SigAss - B); //GeV^(-2) >> 314 296 C = 13.55; 315 C = 13.55; 297 d1 = -4.47; 316 d1 = -4.47; 298 d2 = 12.38; 317 d2 = 12.38; 299 d3 = -12.43; 318 d3 = -12.43; >> 319 xsection = SigAss*(1 + 1./(std::sqrt(S-4.*Mn*Mn)) / (std::pow(R0, 3.)) >> 320 *C* (1+d1/SqrtS+d2/(std::pow(SqrtS,2.))+d3/(std::pow(SqrtS,3.)) )); 300 321 301 xsection = SigAss * ( 1 + 1./(std::sqrt(S-4. << 322 // xsection *= millibarn; 302 * C * ( 1 + d1/SqrtS + << 303 + d3/(theG4Pow << 304 323 305 //xsection *= millibarn; << 306 fAntiHadronNucleonTotXsc = xsection; 324 fAntiHadronNucleonTotXsc = xsection; 307 << 308 return fAntiHadronNucleonTotXsc; 325 return fAntiHadronNucleonTotXsc; 309 } 326 } 310 327 311 328 312 // /////////////////////////////////////////// << 329 // >> 330 // ///////////////////////////////////////////////////////////////////////////////// 313 // Calculation of Antihadron - hadron Elastic 331 // Calculation of Antihadron - hadron Elastic Cross-section 314 332 315 G4double G4ComponentAntiNuclNuclearXS :: 333 G4double G4ComponentAntiNuclNuclearXS :: 316 GetAntiHadronNucleonElCrSc(const G4ParticleDef 334 GetAntiHadronNucleonElCrSc(const G4ParticleDefinition* aParticle, G4double kinEnergy) 317 { 335 { 318 G4double xsection; << 336 G4double xsection; 319 G4double SigAss; << 320 G4double C, d1, d2, d3; << 321 GetAntiHadronNucleonTotCrSc(aParticle,kinEne << 322 SigAss = 4.5 + 0.101*G4Log(S/S0)*G4Log(S/S << 323 C = 59.27; << 324 d1 = -6.95; << 325 d2 = 23.54; << 326 d3 = -25.34; << 327 << 328 xsection = SigAss * ( 1 + 1. / (std::sqrt(S- << 329 * C * ( 1 + d1/SqrtS + << 330 + d3/(theG4Pow << 331 337 332 //xsection *= millibarn; << 338 G4double SigAss; 333 fAntiHadronNucleonElXsc = xsection; << 339 G4double C, d1, d2, d3 ; 334 340 335 return fAntiHadronNucleonElXsc; << 341 GetAntiHadronNucleonTotCrSc(aParticle,kinEnergy); 336 } << 337 342 >> 343 SigAss = 4.5 + 0.101*std::log(S/S0)*std::log(S/S0); //mb >> 344 >> 345 C = 59.27; >> 346 d1 = -6.95; >> 347 d2 = 23.54; >> 348 d3 = -25.34; 338 349 339 ////////////////////////////////////////////// << 350 xsection = SigAss* (1 + 1. / (std::sqrt(S-4.*Mn*Mn)) / (std::pow(R0, 3.)) >> 351 *C* ( 1+d1/SqrtS+d2/(std::pow(SqrtS,2.))+d3/(std::pow(SqrtS,3.)) )); 340 352 341 void G4ComponentAntiNuclNuclearXS::CrossSectio << 353 // xsection *= millibarn; 342 { << 343 outFile << "The G4ComponentAntiNuclNuclearXS << 344 << "inelastic, elastic cross section << 345 << "anti-nucleus interactions with n << 346 << "It uses parametrizations of anti << 347 << "cross sections and Wood-Saxon di << 348 << "See details in Phys.Lett. B705 ( << 349 } << 350 354 >> 355 fAntiHadronNucleonElXsc = xsection; >> 356 return fAntiHadronNucleonElXsc; >> 357 } 351 358