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******************************************************************** 25 // 25 // 26 // 26 // 27 // ------------------------------------------- 27 // ------------------------------------------------------------------- 28 // 28 // 29 // GEANT4 Class file 29 // GEANT4 Class file 30 // 30 // 31 // 31 // 32 // File name: G4IonFluctuation 32 // File name: G4IonFluctuation 33 // 33 // 34 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko 35 // 35 // 36 // Creation date: 03.01.2002 36 // Creation date: 03.01.2002 37 // 37 // 38 // Modifications: 38 // Modifications: 39 // 39 // 40 // 28-12-02 add method Dispersion (V.Ivanchenk 40 // 28-12-02 add method Dispersion (V.Ivanchenko) 41 // 07-02-03 change signature (V.Ivanchenko) 41 // 07-02-03 change signature (V.Ivanchenko) 42 // 13-02-03 Add name (V.Ivanchenko) 42 // 13-02-03 Add name (V.Ivanchenko) 43 // 23-05-03 Add control on parthalogical cases 43 // 23-05-03 Add control on parthalogical cases (V.Ivanchenko) 44 // 16-10-03 Changed interface to Initialisatio 44 // 16-10-03 Changed interface to Initialisation (V.Ivanchenko) 45 // 27-09-07 Use FermiEnergy from material, add 45 // 27-09-07 Use FermiEnergy from material, add cut dependence (V.Ivanchenko) 46 // 01-02-08 Add protection for small energies 46 // 01-02-08 Add protection for small energies and optimise the code (V.Ivanchenko) 47 // 01-06-08 Added initialisation of effective 47 // 01-06-08 Added initialisation of effective charge prestep (V.Ivanchenko) 48 // 48 // 49 // Class Description: 49 // Class Description: 50 // 50 // 51 // ------------------------------------------- 51 // ------------------------------------------------------------------- 52 // 52 // 53 53 54 //....oooOO0OOooo........oooOO0OOooo........oo 54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 55 //....oooOO0OOooo........oooOO0OOooo........oo 55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 56 56 57 #include "G4IonFluctuations.hh" 57 #include "G4IonFluctuations.hh" 58 #include "G4UniversalFluctuation.hh" << 59 #include "G4PhysicalConstants.hh" 58 #include "G4PhysicalConstants.hh" 60 #include "G4SystemOfUnits.hh" 59 #include "G4SystemOfUnits.hh" 61 #include "Randomize.hh" 60 #include "Randomize.hh" 62 #include "G4Poisson.hh" 61 #include "G4Poisson.hh" 63 #include "G4MaterialCutsCouple.hh" 62 #include "G4MaterialCutsCouple.hh" 64 #include "G4Material.hh" 63 #include "G4Material.hh" 65 #include "G4DynamicParticle.hh" 64 #include "G4DynamicParticle.hh" 66 #include "G4Pow.hh" 65 #include "G4Pow.hh" 67 #include "G4Log.hh" 66 #include "G4Log.hh" 68 67 69 //....oooOO0OOooo........oooOO0OOooo........oo 68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 70 69 71 using namespace std; 70 using namespace std; 72 71 73 G4IonFluctuations::G4IonFluctuations(const G4S 72 G4IonFluctuations::G4IonFluctuations(const G4String& nam) 74 : G4VEmFluctuationModel(nam), 73 : G4VEmFluctuationModel(nam), >> 74 particle(0), 75 particleMass(CLHEP::proton_mass_c2), 75 particleMass(CLHEP::proton_mass_c2), >> 76 charge(1.0), >> 77 chargeSquare(1.0), >> 78 effChargeSquare(1.0), 76 parameter(10.0*CLHEP::MeV/CLHEP::proton_ma 79 parameter(10.0*CLHEP::MeV/CLHEP::proton_mass_c2), 77 theBohrBeta2(50.0*keV/CLHEP::proton_mass_c 80 theBohrBeta2(50.0*keV/CLHEP::proton_mass_c2), >> 81 minFraction(0.2), >> 82 xmin(0.2), 78 minLoss(0.001*CLHEP::eV) 83 minLoss(0.001*CLHEP::eV) 79 { 84 { 80 uniFluct = new G4UniversalFluctuation(); << 85 kineticEnergy = 0.0; >> 86 beta2 = 0.0; 81 g4calc = G4Pow::GetInstance(); 87 g4calc = G4Pow::GetInstance(); 82 } 88 } 83 89 84 //....oooOO0OOooo........oooOO0OOooo........oo 90 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 85 91 86 G4IonFluctuations::~G4IonFluctuations() = defa << 92 G4IonFluctuations::~G4IonFluctuations() >> 93 {} 87 94 88 //....oooOO0OOooo........oooOO0OOooo........oo 95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 89 96 90 void G4IonFluctuations::InitialiseMe(const G4P 97 void G4IonFluctuations::InitialiseMe(const G4ParticleDefinition* part) 91 { 98 { 92 particle = part; << 99 particle = part; 93 particleMass = part->GetPDGMass(); << 100 particleMass = part->GetPDGMass(); 94 charge = part->GetPDGCharge()/eplus; << 101 charge = part->GetPDGCharge()/eplus; 95 effChargeSquare = chargeSquare = charge*char << 102 chargeSquare = charge*charge; 96 uniFluct->InitialiseMe(part); << 103 effChargeSquare= chargeSquare; >> 104 uniFluct.InitialiseMe(part); 97 } 105 } 98 106 99 //....oooOO0OOooo........oooOO0OOooo........oo 107 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 100 108 101 G4double 109 G4double 102 G4IonFluctuations::SampleFluctuations(const G4 110 G4IonFluctuations::SampleFluctuations(const G4MaterialCutsCouple* couple, 103 const G4 111 const G4DynamicParticle* dp, 104 const G4 << 112 G4double tmax, 105 const G4 << 113 G4double length, 106 const G4 << 114 G4double meanLoss) 107 const G4 << 108 { 115 { 109 // G4cout << "### meanLoss= " << meanLoss < 116 // G4cout << "### meanLoss= " << meanLoss << G4endl; 110 if(meanLoss <= minLoss) return meanLoss; 117 if(meanLoss <= minLoss) return meanLoss; 111 118 112 //G4cout << "G4IonFluctuations::SampleFluctu 119 //G4cout << "G4IonFluctuations::SampleFluctuations E(MeV)= " 113 // << dp->GetKineticEnergy() 120 // << dp->GetKineticEnergy() 114 // << " Elim(MeV)= " << parameter*c 121 // << " Elim(MeV)= " << parameter*charge*particleMass << G4endl; 115 122 116 // Vavilov fluctuations above energy thresho << 123 // Vavilov fluctuations 117 if(dp->GetKineticEnergy() > parameter*charge 124 if(dp->GetKineticEnergy() > parameter*charge*particleMass) { 118 return uniFluct->SampleFluctuations(couple << 125 return uniFluct.SampleFluctuations(couple,dp,tmax,length,meanLoss); 119 } 126 } 120 127 121 const G4Material* material = couple->GetMate 128 const G4Material* material = couple->GetMaterial(); 122 G4double siga = Dispersion(material,dp,tcut, << 129 G4double siga = Dispersion(material,dp,tmax,length); 123 G4double loss = meanLoss; 130 G4double loss = meanLoss; 124 131 125 //G4cout << "### siga= " << sqrt(siga) << " 132 //G4cout << "### siga= " << sqrt(siga) << " navr= " << navr << G4endl; 126 133 127 // Gaussian fluctuation 134 // Gaussian fluctuation 128 135 129 // Increase fluctuations for big fractional 136 // Increase fluctuations for big fractional energy loss 130 //G4cout << "siga= " << siga << G4endl; 137 //G4cout << "siga= " << siga << G4endl; 131 if ( meanLoss > minFraction*kineticEnergy ) 138 if ( meanLoss > minFraction*kineticEnergy ) { 132 G4double gam = (kineticEnergy - meanLoss)/ 139 G4double gam = (kineticEnergy - meanLoss)/particleMass + 1.0; 133 G4double b2 = 1.0 - 1.0/(gam*gam); 140 G4double b2 = 1.0 - 1.0/(gam*gam); 134 if(b2 < xmin*beta2) b2 = xmin*beta2; 141 if(b2 < xmin*beta2) b2 = xmin*beta2; 135 G4double x = b2/beta2; 142 G4double x = b2/beta2; 136 G4double x3 = 1.0/(x*x*x); 143 G4double x3 = 1.0/(x*x*x); 137 siga *= 0.25*(1.0 + x)*(x3 + (1.0/b2 - 0.5 144 siga *= 0.25*(1.0 + x)*(x3 + (1.0/b2 - 0.5)/(1.0/beta2 - 0.5) ); 138 } 145 } 139 siga = std::sqrt(siga); << 146 siga = sqrt(siga); 140 G4double sn = meanLoss/siga; 147 G4double sn = meanLoss/siga; 141 G4double twomeanLoss = meanLoss + meanLoss; 148 G4double twomeanLoss = meanLoss + meanLoss; 142 // G4cout << "siga= " << siga << " sn= " < 149 // G4cout << "siga= " << siga << " sn= " << sn << G4endl; 143 150 144 CLHEP::HepRandomEngine* rndmEngine = G4Rando 151 CLHEP::HepRandomEngine* rndmEngine = G4Random::getTheEngine(); 145 // thick target case 152 // thick target case 146 if (sn >= 2.0) { 153 if (sn >= 2.0) { 147 154 148 do { 155 do { 149 loss = G4RandGauss::shoot(rndmEngine,mea 156 loss = G4RandGauss::shoot(rndmEngine,meanLoss,siga); 150 // Loop checking, 03-Aug-2015, Vladimir 157 // Loop checking, 03-Aug-2015, Vladimir Ivanchenko 151 } while (0.0 > loss || twomeanLoss < loss) 158 } while (0.0 > loss || twomeanLoss < loss); 152 159 153 // Gamma distribution 160 // Gamma distribution 154 } else if(sn > 0.1) { 161 } else if(sn > 0.1) { 155 162 156 G4double neff = sn*sn; 163 G4double neff = sn*sn; 157 loss = meanLoss*G4RandGamma::shoot(rndmEng 164 loss = meanLoss*G4RandGamma::shoot(rndmEngine,neff,1.0)/neff; 158 165 159 // uniform distribution for very small ste 166 // uniform distribution for very small steps 160 } else { 167 } else { 161 loss = twomeanLoss*rndmEngine->flat(); 168 loss = twomeanLoss*rndmEngine->flat(); 162 } 169 } 163 170 164 //G4cout << "meanLoss= " << meanLoss << " lo 171 //G4cout << "meanLoss= " << meanLoss << " loss= " << loss << G4endl; 165 return loss; 172 return loss; 166 } 173 } 167 174 168 //....oooOO0OOooo........oooOO0OOooo........oo 175 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 169 176 170 G4double G4IonFluctuations::Dispersion(const G 177 G4double G4IonFluctuations::Dispersion(const G4Material* material, 171 const G 178 const G4DynamicParticle* dp, 172 const G << 179 G4double tmax, 173 const G << 180 G4double length) 174 const G << 175 { 181 { 176 if(dp->GetDefinition() != particle) { Initia << 177 << 178 const G4double beta = dp->GetBeta(); << 179 kineticEnergy = dp->GetKineticEnergy(); 182 kineticEnergy = dp->GetKineticEnergy(); 180 beta2 = beta*beta; << 183 G4double etot = kineticEnergy + particleMass; >> 184 beta2 = kineticEnergy*(kineticEnergy + 2.*particleMass)/(etot*etot); >> 185 >> 186 G4double electronDensity = material->GetElectronDensity(); 181 187 182 G4double siga = (tmax/beta2 - 0.5*tcut)*CLHE << 188 /* 183 material->GetElectronDensity()*effChargeSq << 189 G4cout << "e= " << kineticEnergy << " m= " << particleMass >> 190 << " tmax= " << tmax << " l= " << length >> 191 << " q^2= " << effChargeSquare << " beta2=" << beta2<< G4endl; >> 192 */ >> 193 G4double siga = (1. - beta2*0.5)*tmax*length*electronDensity* >> 194 twopi_mc2_rcl2*chargeSquare/beta2; 184 195 185 // Low velocity - additional ion charge fluc 196 // Low velocity - additional ion charge fluctuations according to 186 // Q.Yang et al., NIM B61(1991)149-155. 197 // Q.Yang et al., NIM B61(1991)149-155. 187 //G4cout << "sigE= " << sqrt(siga) << " char 198 //G4cout << "sigE= " << sqrt(siga) << " charge= " << charge <<G4endl; 188 199 189 G4double Z = material->GetIonisation()->GetZ 200 G4double Z = material->GetIonisation()->GetZeffective(); >> 201 190 G4double fac = Factor(material, Z); 202 G4double fac = Factor(material, Z); 191 203 192 // heavy ion correction 204 // heavy ion correction 193 // G4double f1 = 1.065e-4*chargeSquare; 205 // G4double f1 = 1.065e-4*chargeSquare; 194 // if(beta2 > theBohrBeta2) f1/= beta2; 206 // if(beta2 > theBohrBeta2) f1/= beta2; 195 // else f1/= theBohrBe 207 // else f1/= theBohrBeta2; 196 // if(f1 > 2.5) f1 = 2.5; 208 // if(f1 > 2.5) f1 = 2.5; 197 // fac *= (1.0 + f1); 209 // fac *= (1.0 + f1); 198 210 199 // taking into account the cutg << 211 // taking into account the cut 200 G4double fac_cut = 1.0 + (fac - 1.0)*2.0*CLH << 212 G4double fac_cut = 1.0 + (fac - 1.0)*2.0*electron_mass_c2*beta2 201 /(tmax*(1.0 - beta2)); 213 /(tmax*(1.0 - beta2)); 202 if(fac_cut > 0.01 && fac > 0.01) { 214 if(fac_cut > 0.01 && fac > 0.01) { 203 siga *= fac_cut; 215 siga *= fac_cut; 204 } 216 } 205 /* << 217 206 G4cout << "siga(keV)= " << sqrt(siga)/keV << << 218 //G4cout << "siga(keV)= " << sqrt(siga)/keV << " fac= " << fac 207 << " f1= " << fac_cut << G4endl; << 219 // << " f1= " << f1 << G4endl; 208 */ << 220 209 return siga; 221 return siga; 210 } 222 } 211 223 212 //....oooOO0OOooo........oooOO0OOooo........oo 224 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 213 225 214 G4double G4IonFluctuations::Factor(const G4Mat 226 G4double G4IonFluctuations::Factor(const G4Material* material, G4double Z) 215 { 227 { 216 // The aproximation of energy loss fluctuati 228 // The aproximation of energy loss fluctuations 217 // Q.Yang et al., NIM B61(1991)149-155. 229 // Q.Yang et al., NIM B61(1991)149-155. 218 230 219 // Reduced energy in MeV/AMU 231 // Reduced energy in MeV/AMU 220 G4double energy = kineticEnergy*CLHEP::amu_c << 232 G4double energy = kineticEnergy *amu_c2/(particleMass*MeV) ; 221 233 222 // simple approximation for higher beta2 234 // simple approximation for higher beta2 223 G4double s1 = RelativisticFactor(material, Z 235 G4double s1 = RelativisticFactor(material, Z); 224 236 225 // tabulation for lower beta2 237 // tabulation for lower beta2 226 if( beta2 < 3.0*theBohrBeta2*Z ) { 238 if( beta2 < 3.0*theBohrBeta2*Z ) { 227 239 228 static const G4double a[96][4] = { 240 static const G4double a[96][4] = { 229 {-0.3291, -0.8312, 0.2460, -1.0220}, 241 {-0.3291, -0.8312, 0.2460, -1.0220}, 230 {-0.5615, -0.5898, 0.5205, -0.7258}, 242 {-0.5615, -0.5898, 0.5205, -0.7258}, 231 {-0.5280, -0.4981, 0.5519, -0.5865}, 243 {-0.5280, -0.4981, 0.5519, -0.5865}, 232 {-0.5125, -0.4625, 0.5660, -0.5190}, 244 {-0.5125, -0.4625, 0.5660, -0.5190}, 233 {-0.5127, -0.8595, 0.5626, -0.8721}, 245 {-0.5127, -0.8595, 0.5626, -0.8721}, 234 {-0.5174, -1.1930, 0.5565, -1.1980}, 246 {-0.5174, -1.1930, 0.5565, -1.1980}, 235 {-0.5179, -1.1850, 0.5560, -1.2070}, 247 {-0.5179, -1.1850, 0.5560, -1.2070}, 236 {-0.5209, -0.9355, 0.5590, -1.0250}, 248 {-0.5209, -0.9355, 0.5590, -1.0250}, 237 {-0.5255, -0.7766, 0.5720, -0.9412}, 249 {-0.5255, -0.7766, 0.5720, -0.9412}, 238 250 239 {-0.5776, -0.6665, 0.6598, -0.8484}, 251 {-0.5776, -0.6665, 0.6598, -0.8484}, 240 {-0.6013, -0.6045, 0.7321, -0.7671}, 252 {-0.6013, -0.6045, 0.7321, -0.7671}, 241 {-0.5781, -0.5518, 0.7605, -0.6919}, 253 {-0.5781, -0.5518, 0.7605, -0.6919}, 242 {-0.5587, -0.4981, 0.7835, -0.6195}, 254 {-0.5587, -0.4981, 0.7835, -0.6195}, 243 {-0.5466, -0.4656, 0.7978, -0.5771}, 255 {-0.5466, -0.4656, 0.7978, -0.5771}, 244 {-0.5406, -0.4690, 0.8031, -0.5718}, 256 {-0.5406, -0.4690, 0.8031, -0.5718}, 245 {-0.5391, -0.5061, 0.8024, -0.5974}, 257 {-0.5391, -0.5061, 0.8024, -0.5974}, 246 {-0.5380, -0.6483, 0.7962, -0.6970}, 258 {-0.5380, -0.6483, 0.7962, -0.6970}, 247 {-0.5355, -0.7722, 0.7962, -0.7839}, 259 {-0.5355, -0.7722, 0.7962, -0.7839}, 248 {-0.5329, -0.7720, 0.7988, -0.7846}, 260 {-0.5329, -0.7720, 0.7988, -0.7846}, 249 261 250 {-0.5335, -0.7671, 0.7984, -0.7933}, 262 {-0.5335, -0.7671, 0.7984, -0.7933}, 251 {-0.5324, -0.7612, 0.7998, -0.8031}, 263 {-0.5324, -0.7612, 0.7998, -0.8031}, 252 {-0.5305, -0.7300, 0.8031, -0.7990}, 264 {-0.5305, -0.7300, 0.8031, -0.7990}, 253 {-0.5307, -0.7178, 0.8049, -0.8216}, 265 {-0.5307, -0.7178, 0.8049, -0.8216}, 254 {-0.5248, -0.6621, 0.8165, -0.7919}, 266 {-0.5248, -0.6621, 0.8165, -0.7919}, 255 {-0.5180, -0.6502, 0.8266, -0.7986}, 267 {-0.5180, -0.6502, 0.8266, -0.7986}, 256 {-0.5084, -0.6408, 0.8396, -0.8048}, 268 {-0.5084, -0.6408, 0.8396, -0.8048}, 257 {-0.4967, -0.6331, 0.8549, -0.8093}, 269 {-0.4967, -0.6331, 0.8549, -0.8093}, 258 {-0.4861, -0.6508, 0.8712, -0.8432}, 270 {-0.4861, -0.6508, 0.8712, -0.8432}, 259 {-0.4700, -0.6186, 0.8961, -0.8132}, 271 {-0.4700, -0.6186, 0.8961, -0.8132}, 260 272 261 {-0.4545, -0.5720, 0.9227, -0.7710}, 273 {-0.4545, -0.5720, 0.9227, -0.7710}, 262 {-0.4404, -0.5226, 0.9481, -0.7254}, 274 {-0.4404, -0.5226, 0.9481, -0.7254}, 263 {-0.4288, -0.4778, 0.9701, -0.6850}, 275 {-0.4288, -0.4778, 0.9701, -0.6850}, 264 {-0.4199, -0.4425, 0.9874, -0.6539}, 276 {-0.4199, -0.4425, 0.9874, -0.6539}, 265 {-0.4131, -0.4188, 0.9998, -0.6332}, 277 {-0.4131, -0.4188, 0.9998, -0.6332}, 266 {-0.4089, -0.4057, 1.0070, -0.6218}, 278 {-0.4089, -0.4057, 1.0070, -0.6218}, 267 {-0.4039, -0.3913, 1.0150, -0.6107}, 279 {-0.4039, -0.3913, 1.0150, -0.6107}, 268 {-0.3987, -0.3698, 1.0240, -0.5938}, 280 {-0.3987, -0.3698, 1.0240, -0.5938}, 269 {-0.3977, -0.3608, 1.0260, -0.5852}, 281 {-0.3977, -0.3608, 1.0260, -0.5852}, 270 {-0.3972, -0.3600, 1.0260, -0.5842}, 282 {-0.3972, -0.3600, 1.0260, -0.5842}, 271 283 272 {-0.3985, -0.3803, 1.0200, -0.6013}, 284 {-0.3985, -0.3803, 1.0200, -0.6013}, 273 {-0.3985, -0.3979, 1.0150, -0.6168}, 285 {-0.3985, -0.3979, 1.0150, -0.6168}, 274 {-0.3968, -0.3990, 1.0160, -0.6195}, 286 {-0.3968, -0.3990, 1.0160, -0.6195}, 275 {-0.3971, -0.4432, 1.0050, -0.6591}, 287 {-0.3971, -0.4432, 1.0050, -0.6591}, 276 {-0.3944, -0.4665, 1.0010, -0.6825}, 288 {-0.3944, -0.4665, 1.0010, -0.6825}, 277 {-0.3924, -0.5109, 0.9921, -0.7235}, 289 {-0.3924, -0.5109, 0.9921, -0.7235}, 278 {-0.3882, -0.5158, 0.9947, -0.7343}, 290 {-0.3882, -0.5158, 0.9947, -0.7343}, 279 {-0.3838, -0.5125, 0.9999, -0.7370}, 291 {-0.3838, -0.5125, 0.9999, -0.7370}, 280 {-0.3786, -0.4976, 1.0090, -0.7310}, 292 {-0.3786, -0.4976, 1.0090, -0.7310}, 281 {-0.3741, -0.4738, 1.0200, -0.7155}, 293 {-0.3741, -0.4738, 1.0200, -0.7155}, 282 294 283 {-0.3969, -0.4496, 1.0320, -0.6982}, 295 {-0.3969, -0.4496, 1.0320, -0.6982}, 284 {-0.3663, -0.4297, 1.0430, -0.6828}, 296 {-0.3663, -0.4297, 1.0430, -0.6828}, 285 {-0.3630, -0.4120, 1.0530, -0.6689}, 297 {-0.3630, -0.4120, 1.0530, -0.6689}, 286 {-0.3597, -0.3964, 1.0620, -0.6564}, 298 {-0.3597, -0.3964, 1.0620, -0.6564}, 287 {-0.3555, -0.3809, 1.0720, -0.6454}, 299 {-0.3555, -0.3809, 1.0720, -0.6454}, 288 {-0.3525, -0.3607, 1.0820, -0.6289}, 300 {-0.3525, -0.3607, 1.0820, -0.6289}, 289 {-0.3505, -0.3465, 1.0900, -0.6171}, 301 {-0.3505, -0.3465, 1.0900, -0.6171}, 290 {-0.3397, -0.3570, 1.1020, -0.6384}, 302 {-0.3397, -0.3570, 1.1020, -0.6384}, 291 {-0.3314, -0.3552, 1.1130, -0.6441}, 303 {-0.3314, -0.3552, 1.1130, -0.6441}, 292 {-0.3235, -0.3531, 1.1230, -0.6498}, 304 {-0.3235, -0.3531, 1.1230, -0.6498}, 293 305 294 {-0.3150, -0.3483, 1.1360, -0.6539}, 306 {-0.3150, -0.3483, 1.1360, -0.6539}, 295 {-0.3060, -0.3441, 1.1490, -0.6593}, 307 {-0.3060, -0.3441, 1.1490, -0.6593}, 296 {-0.2968, -0.3396, 1.1630, -0.6649}, 308 {-0.2968, -0.3396, 1.1630, -0.6649}, 297 {-0.2935, -0.3225, 1.1760, -0.6527}, 309 {-0.2935, -0.3225, 1.1760, -0.6527}, 298 {-0.2797, -0.3262, 1.1940, -0.6722}, 310 {-0.2797, -0.3262, 1.1940, -0.6722}, 299 {-0.2704, -0.3202, 1.2100, -0.6770}, 311 {-0.2704, -0.3202, 1.2100, -0.6770}, 300 {-0.2815, -0.3227, 1.2480, -0.6775}, 312 {-0.2815, -0.3227, 1.2480, -0.6775}, 301 {-0.2880, -0.3245, 1.2810, -0.6801}, 313 {-0.2880, -0.3245, 1.2810, -0.6801}, 302 {-0.3034, -0.3263, 1.3270, -0.6778}, 314 {-0.3034, -0.3263, 1.3270, -0.6778}, 303 {-0.2936, -0.3215, 1.3430, -0.6835}, 315 {-0.2936, -0.3215, 1.3430, -0.6835}, 304 316 305 {-0.3282, -0.3200, 1.3980, -0.6650}, 317 {-0.3282, -0.3200, 1.3980, -0.6650}, 306 {-0.3260, -0.3070, 1.4090, -0.6552}, 318 {-0.3260, -0.3070, 1.4090, -0.6552}, 307 {-0.3511, -0.3074, 1.4470, -0.6442}, 319 {-0.3511, -0.3074, 1.4470, -0.6442}, 308 {-0.3501, -0.3064, 1.4500, -0.6442}, 320 {-0.3501, -0.3064, 1.4500, -0.6442}, 309 {-0.3490, -0.3027, 1.4550, -0.6418}, 321 {-0.3490, -0.3027, 1.4550, -0.6418}, 310 {-0.3487, -0.3048, 1.4570, -0.6447}, 322 {-0.3487, -0.3048, 1.4570, -0.6447}, 311 {-0.3478, -0.3074, 1.4600, -0.6483}, 323 {-0.3478, -0.3074, 1.4600, -0.6483}, 312 {-0.3501, -0.3283, 1.4540, -0.6669}, 324 {-0.3501, -0.3283, 1.4540, -0.6669}, 313 {-0.3494, -0.3373, 1.4550, -0.6765}, 325 {-0.3494, -0.3373, 1.4550, -0.6765}, 314 {-0.3485, -0.3373, 1.4570, -0.6774}, 326 {-0.3485, -0.3373, 1.4570, -0.6774}, 315 327 316 {-0.3462, -0.3300, 1.4630, -0.6728}, 328 {-0.3462, -0.3300, 1.4630, -0.6728}, 317 {-0.3462, -0.3225, 1.4690, -0.6662}, 329 {-0.3462, -0.3225, 1.4690, -0.6662}, 318 {-0.3453, -0.3094, 1.4790, -0.6553}, 330 {-0.3453, -0.3094, 1.4790, -0.6553}, 319 {-0.3844, -0.3134, 1.5240, -0.6412}, 331 {-0.3844, -0.3134, 1.5240, -0.6412}, 320 {-0.3848, -0.3018, 1.5310, -0.6303}, 332 {-0.3848, -0.3018, 1.5310, -0.6303}, 321 {-0.3862, -0.2955, 1.5360, -0.6237}, 333 {-0.3862, -0.2955, 1.5360, -0.6237}, 322 {-0.4262, -0.2991, 1.5860, -0.6115}, 334 {-0.4262, -0.2991, 1.5860, -0.6115}, 323 {-0.4278, -0.2910, 1.5900, -0.6029}, 335 {-0.4278, -0.2910, 1.5900, -0.6029}, 324 {-0.4303, -0.2817, 1.5940, -0.5927}, 336 {-0.4303, -0.2817, 1.5940, -0.5927}, 325 {-0.4315, -0.2719, 1.6010, -0.5829}, 337 {-0.4315, -0.2719, 1.6010, -0.5829}, 326 338 327 {-0.4359, -0.2914, 1.6050, -0.6010}, 339 {-0.4359, -0.2914, 1.6050, -0.6010}, 328 {-0.4365, -0.2982, 1.6080, -0.6080}, 340 {-0.4365, -0.2982, 1.6080, -0.6080}, 329 {-0.4253, -0.3037, 1.6120, -0.6150}, 341 {-0.4253, -0.3037, 1.6120, -0.6150}, 330 {-0.4335, -0.3245, 1.6160, -0.6377}, 342 {-0.4335, -0.3245, 1.6160, -0.6377}, 331 {-0.4307, -0.3292, 1.6210, -0.6447}, 343 {-0.4307, -0.3292, 1.6210, -0.6447}, 332 {-0.4284, -0.3204, 1.6290, -0.6380}, 344 {-0.4284, -0.3204, 1.6290, -0.6380}, 333 {-0.4227, -0.3217, 1.6360, -0.6438} 345 {-0.4227, -0.3217, 1.6360, -0.6438} 334 } ; 346 } ; 335 347 336 G4int iz = G4lrint(Z) - 2; 348 G4int iz = G4lrint(Z) - 2; 337 if( 0 > iz ) { iz = 0; } 349 if( 0 > iz ) { iz = 0; } 338 else if(95 < iz ) { iz = 95; } 350 else if(95 < iz ) { iz = 95; } 339 351 340 const G4double ss = 1.0 + a[iz][0]*g4calc- << 352 // G4double ss = 1.0 + a[iz][0]*pow(energy,a[iz][1])+ >> 353 // + a[iz][2]*pow(energy,a[iz][3]); >> 354 G4double ss = 1.0 + a[iz][0]*g4calc->powA(energy,a[iz][1])+ 341 + a[iz][2]*g4calc->powA(energy,a[iz][3]) 355 + a[iz][2]*g4calc->powA(energy,a[iz][3]); 342 356 343 // protection for the validity range for l 357 // protection for the validity range for low beta 344 static const G4double slim = 0.001; 358 static const G4double slim = 0.001; 345 if(ss < slim) { s1 = 1.0/slim; } 359 if(ss < slim) { s1 = 1.0/slim; } 346 // for high value of beta 360 // for high value of beta 347 else if(s1*ss < 1.0) { s1 = 1.0/ss; } 361 else if(s1*ss < 1.0) { s1 = 1.0/ss; } 348 } 362 } 349 G4int i = 0 ; 363 G4int i = 0 ; 350 G4double factor = 1.0 ; 364 G4double factor = 1.0 ; 351 365 352 // The index of set of parameters i = 0 for 366 // The index of set of parameters i = 0 for protons(hadrons) in gases 353 // 1 for 367 // 1 for protons(hadrons) in solids 354 // 2 for 368 // 2 for ions in atomic gases 355 // 3 for 369 // 3 for ions in molecular gases 356 // 4 for 370 // 4 for ions in solids 357 static const G4double b[5][4] = { 371 static const G4double b[5][4] = { 358 {0.1014, 0.3700, 0.9642, 3.987}, 372 {0.1014, 0.3700, 0.9642, 3.987}, 359 {0.1955, 0.6941, 2.522, 1.040}, 373 {0.1955, 0.6941, 2.522, 1.040}, 360 {0.05058, 0.08975, 0.1419, 10.80}, 374 {0.05058, 0.08975, 0.1419, 10.80}, 361 {0.05009, 0.08660, 0.2751, 3.787}, 375 {0.05009, 0.08660, 0.2751, 3.787}, 362 {0.01273, 0.03458, 0.3951, 3.812} 376 {0.01273, 0.03458, 0.3951, 3.812} 363 } ; 377 } ; 364 378 365 // protons (hadrons) 379 // protons (hadrons) 366 if(1.5 > charge) { 380 if(1.5 > charge) { 367 if( kStateGas != material->GetState() ) { 381 if( kStateGas != material->GetState() ) { i = 1; } 368 382 369 // ions 383 // ions 370 } else { 384 } else { 371 385 372 factor = charge * g4calc->A13(charge/Z); 386 factor = charge * g4calc->A13(charge/Z); 373 387 374 if( kStateGas == material->GetState() ) { 388 if( kStateGas == material->GetState() ) { 375 energy /= (charge * std::sqrt(charge)) ; << 389 energy /= (charge * sqrt(charge)) ; 376 390 377 if(1 == (material->GetNumberOfElements() 391 if(1 == (material->GetNumberOfElements())) { 378 i = 2 ; 392 i = 2 ; 379 } else { 393 } else { 380 i = 3 ; 394 i = 3 ; 381 } 395 } 382 396 383 } else { 397 } else { 384 energy /= (charge * std::sqrt(charge*Z)) << 398 energy /= (charge * sqrt(charge*Z)) ; 385 i = 4 ; 399 i = 4 ; 386 } 400 } 387 } 401 } 388 402 389 G4double x = b[i][2]; 403 G4double x = b[i][2]; 390 G4double y = energy * b[i][3]; 404 G4double y = energy * b[i][3]; 391 if(y <= 0.2) x *= (y*(1.0 - 0.5*y)); 405 if(y <= 0.2) x *= (y*(1.0 - 0.5*y)); 392 else x *= (1.0 - g4calc->expA(-y)); 406 else x *= (1.0 - g4calc->expA(-y)); >> 407 // else x *= (1.0 - exp(-y)); 393 408 394 y = energy - b[i][1]; 409 y = energy - b[i][1]; 395 410 396 const G4double s2 = factor * x * b[i][0] / ( << 411 G4double s2 = factor * x * b[i][0] / (y*y + x*x); 397 /* 412 /* 398 G4cout << "s1= " << s1 << " s2= " << s2 << " 413 G4cout << "s1= " << s1 << " s2= " << s2 << " q^2= " << effChargeSquare 399 << " e= " << energy << G4endl; 414 << " e= " << energy << G4endl; 400 */ 415 */ 401 return s1*effChargeSquare/chargeSquare + s2; 416 return s1*effChargeSquare/chargeSquare + s2; 402 } 417 } 403 418 404 //....oooOO0OOooo........oooOO0OOooo........oo 419 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 405 420 406 G4double G4IonFluctuations::RelativisticFactor 421 G4double G4IonFluctuations::RelativisticFactor(const G4Material* mat, 407 422 G4double Z) 408 { 423 { 409 G4double eF = mat->GetIonisation()->GetFermi 424 G4double eF = mat->GetIonisation()->GetFermiEnergy(); 410 G4double I = mat->GetIonisation()->GetMeanE 425 G4double I = mat->GetIonisation()->GetMeanExcitationEnergy(); 411 426 412 // H.Geissel et al. NIM B, 195 (2002) 3. 427 // H.Geissel et al. NIM B, 195 (2002) 3. 413 G4double bF2= 2.0*eF/CLHEP::electron_mass_c2 << 428 G4double bF2= 2.0*eF/electron_mass_c2; 414 G4double f = 0.4*(1.0 - beta2)/((1.0 - 0.5* 429 G4double f = 0.4*(1.0 - beta2)/((1.0 - 0.5*beta2)*Z); 415 if(beta2 > bF2) f *= G4Log(2.0*CLHEP::electr << 430 if(beta2 > bF2) f *= G4Log(2.0*electron_mass_c2*beta2/I)*bF2/beta2; 416 else f *= G4Log(4.0*eF/I); 431 else f *= G4Log(4.0*eF/I); 417 432 418 // G4cout << "f= " << f << " beta2= " << be 433 // G4cout << "f= " << f << " beta2= " << beta2 419 // << " bf2= " << bF2 << " q^2= " << 434 // << " bf2= " << bF2 << " q^2= " << chargeSquare << G4endl; 420 435 421 return 1.0 + f; 436 return 1.0 + f; 422 } 437 } 423 438 424 //....oooOO0OOooo........oooOO0OOooo........oo 439 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 425 440 426 void G4IonFluctuations::SetParticleAndCharge(c 441 void G4IonFluctuations::SetParticleAndCharge(const G4ParticleDefinition* part, 427 G 442 G4double q2) 428 { 443 { 429 if(part != particle) { 444 if(part != particle) { 430 particle = part; 445 particle = part; 431 particleMass = part->GetPDGMass(); 446 particleMass = part->GetPDGMass(); 432 charge = part->GetPDGCharge()/eplu 447 charge = part->GetPDGCharge()/eplus; 433 chargeSquare = charge*charge; 448 chargeSquare = charge*charge; 434 } 449 } 435 effChargeSquare = q2; << 450 effChargeSquare = q2; 436 uniFluct->SetParticleAndCharge(part, q2); << 451 uniFluct.SetParticleAndCharge(part, q2); 437 } 452 } 438 453 439 //....oooOO0OOooo........oooOO0OOooo........oo 454 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 440 455