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63 chargeCorrection = 1.0; 67 energyHighLimit = 20.0*CLHEP::MeV; << 64 energyHighLimit = 20.0*MeV; 68 energyLowLimit = 1.0*CLHEP::keV; << 65 energyLowLimit = 1.0*keV; 69 energyBohr = 25.*CLHEP::keV; << 66 energyBohr = 25.*keV; 70 massFactor = CLHEP::amu_c2/(CLHEP::pro << 67 massFactor = amu_c2/(proton_mass_c2*keV); 71 minCharge = 1.0; 68 minCharge = 1.0; >> 69 lastPart = 0; >> 70 lastMat = 0; 72 lastKinEnergy = 0.0; 71 lastKinEnergy = 0.0; 73 effCharge = CLHEP::eplus; << 72 effCharge = eplus; 74 inveplus = 1.0/CLHEP::eplus; << 73 nist = G4NistManager::Instance(); 75 g4calc = G4Pow::GetInstance(); << 76 } 74 } 77 75 78 //....oooOO0OOooo........oooOO0OOooo........oo 76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 79 77 >> 78 G4ionEffectiveCharge::~G4ionEffectiveCharge() >> 79 {} >> 80 >> 81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 82 80 G4double G4ionEffectiveCharge::EffectiveCharge 83 G4double G4ionEffectiveCharge::EffectiveCharge(const G4ParticleDefinition* p, 81 84 const G4Material* material, 82 << 85 G4double kineticEnergy) 83 { 86 { 84 if(p == lastPart && material == lastMat && k 87 if(p == lastPart && material == lastMat && kineticEnergy == lastKinEnergy) 85 return effCharge; 88 return effCharge; 86 89 87 lastPart = p; 90 lastPart = p; 88 lastMat = material; 91 lastMat = material; 89 lastKinEnergy = kineticEnergy; 92 lastKinEnergy = kineticEnergy; 90 93 91 G4double mass = p->GetPDGMass(); << 94 G4double mass = p->GetPDGMass(); 92 effCharge = p->GetPDGCharge(); << 95 G4double charge = p->GetPDGCharge(); 93 G4int Zi = G4lrint(effCharge*inveplus); << 96 G4double Zi = charge/eplus; >> 97 94 chargeCorrection = 1.0; 98 chargeCorrection = 1.0; 95 if(Zi <= 1) { return effCharge; } << 99 effCharge = charge; 96 100 97 // The aproximation of ion effective charge 101 // The aproximation of ion effective charge from: 98 // J.F.Ziegler, J.P. Biersack, U. Littmark 102 // J.F.Ziegler, J.P. Biersack, U. Littmark 99 // The Stopping and Range of Ions in Matter, 103 // The Stopping and Range of Ions in Matter, 100 // Vol.1, Pergamon Press, 1985 104 // Vol.1, Pergamon Press, 1985 101 // Fast ions or hadrons 105 // Fast ions or hadrons 102 G4double reducedEnergy = kineticEnergy * CLH << 106 G4double reducedEnergy = kineticEnergy * proton_mass_c2/mass ; 103 107 104 //G4cout << "e= " << reducedEnergy << " Zi= << 108 //G4cout << "e= " << reducedEnergy << " Zi= " << Zi << " " << material->GetName() << G4endl; 105 //<< material->GetName() << G4endl; << 106 109 107 if(reducedEnergy > effCharge*energyHighLimit << 110 if( reducedEnergy > Zi*energyHighLimit || Zi < 1.5 || !material) return charge; 108 return effCharge; << 111 109 } << 112 G4double z = material->GetIonisation()->GetZeffective(); 110 G4double z = material->GetIonisation()->GetZ << 111 reducedEnergy = std::max(reducedEnergy,energ 113 reducedEnergy = std::max(reducedEnergy,energyLowLimit); 112 114 113 // Helium ion case 115 // Helium ion case 114 if( Zi <= 2 ) { << 116 if( Zi < 2.5 ) { 115 117 116 static const G4double c[6] = << 118 static G4double c[6] = {0.2865, 0.1266, -0.001429, 117 {0.2865,0.1266,-0.001429,0.02402,-0.0113 << 119 0.02402,-0.01135, 0.001475} ; 118 120 119 G4double Q = std::max(0.0,G4Log(reducedEne << 121 G4double Q = std::max(0.0,std::log(reducedEnergy*massFactor)); 120 G4double x = c[0]; 122 G4double x = c[0]; 121 G4double y = 1.0; 123 G4double y = 1.0; 122 for (G4int i=1; i<6; ++i) { << 124 for (G4int i=1; i<6; i++) { 123 y *= Q; 125 y *= Q; 124 x += y * c[i] ; 126 x += y * c[i] ; 125 } 127 } 126 G4double ex = (x < 0.2) ? x * (1 - 0.5*x) << 128 G4double ex; >> 129 if(x < 0.2) ex = x * (1 - 0.5*x); >> 130 else ex = 1. - std::exp(-x); 127 131 128 G4double tq = 7.6 - Q; 132 G4double tq = 7.6 - Q; 129 G4double tq2= tq*tq; 133 G4double tq2= tq*tq; 130 G4double tt = ( 0.007 + 0.00005 * z ); 134 G4double tt = ( 0.007 + 0.00005 * z ); 131 if(tq2 < 0.2) { tt *= (1.0 - tq2 + 0.5*tq2 << 135 if(tq2 < 0.2) tt *= (1.0 - tq2 + 0.5*tq2*tq2); 132 else { tt *= G4Exp(-tq2); } << 136 else tt *= std::exp(-tq2); 133 137 134 effCharge *= (1.0 + tt) * std::sqrt(ex); << 138 effCharge = charge*(1.0 + tt) * std::sqrt(ex); 135 139 136 // Heavy ion case 140 // Heavy ion case 137 } else { 141 } else { 138 142 139 G4double zi13 = g4calc->Z13(Zi); << 143 G4double y; >> 144 // = nist->GetZ13(z); >> 145 //G4double z23 = y*y; >> 146 G4double zi13 = nist->GetZ13(Zi); 140 G4double zi23 = zi13*zi13; 147 G4double zi23 = zi13*zi13; >> 148 // G4double e = std::max(reducedEnergy,energyBohr/z23); >> 149 //G4double e = reducedEnergy; 141 150 142 // v1 is ion velocity in vF unit 151 // v1 is ion velocity in vF unit 143 G4double eF = material->GetIonisation()- 152 G4double eF = material->GetIonisation()->GetFermiEnergy(); 144 G4double v1sq = reducedEnergy/eF; 153 G4double v1sq = reducedEnergy/eF; 145 G4double vFsq = eF/energyBohr; 154 G4double vFsq = eF/energyBohr; 146 G4double vF = std::sqrt(vFsq); << 155 G4double vF = std::sqrt(eF/energyBohr); >> 156 >> 157 // Faster than Fermi velocity >> 158 if ( v1sq > 1.0 ) { >> 159 y = vF * std::sqrt(v1sq) * ( 1.0 + 0.2/v1sq ) / zi23 ; 147 160 148 G4double y = ( v1sq > 1.0 ) << 149 // Faster than Fermi velocity << 150 ? vF * std::sqrt(v1sq) * ( 1.0 + 0.2/v1s << 151 // Slower than Fermi velocity 161 // Slower than Fermi velocity 152 : 0.692308 * vF * (1.0 + 0.666666*v1sq + << 162 } else { >> 163 y = 0.692308 * vF * (1.0 + 0.666666*v1sq + v1sq*v1sq/15.0) / zi23 ; >> 164 } 153 165 154 G4double y3 = G4Exp(0.3*G4Log(y)); << 166 G4double q; >> 167 G4double y3 = std::pow(y, 0.3) ; 155 // G4cout<<"y= "<<y<<" y3= "<<y3<<" v1= "< 168 // G4cout<<"y= "<<y<<" y3= "<<y3<<" v1= "<<v1<<" vF= "<<vF<<G4endl; 156 G4double q = std::max(1.0 - G4Exp( 0.803*y << 169 q = 1.0 - std::exp( 0.803*y3 - 1.3167*y3*y3 - 0.38157*y - 0.008983*y*y ) ; 157 - 0.00898 << 170 >> 171 //y *= 0.77; >> 172 //y *= (0.75 + 0.52/Zi); >> 173 >> 174 //if( y < 0.2 ) q = y*(1.0 - 0.5*y); >> 175 //else q = 1.0 - std::exp(-y); >> 176 >> 177 G4double qmin = minCharge/Zi; >> 178 if(q < qmin) q = qmin; >> 179 >> 180 effCharge = q*charge; >> 181 >> 182 /* >> 183 G4double x1 = 1.0*effCharge*(1.0 - 0.132*std::log(y))/(y*std::sqrt(z)); >> 184 G4double x2 = 0.1*effCharge*effCharge*energyBohr/reducedEnergy; >> 185 >> 186 chargeCorrection = 1.0 + x1 - x2; >> 187 >> 188 G4cout << "x1= "<<x1<<" x2= "<< x2<<" corr= "<<chargeCorrection<<G4endl; >> 189 */ 158 190 159 // compute charge correction << 191 G4double tq = 7.6 - std::log(reducedEnergy/keV); 160 G4double tq = 7.6 - G4Log(reducedEnergy/CL << 161 G4double tq2= tq*tq; 192 G4double tq2= tq*tq; 162 G4double sq = 1.0 + ( 0.18 + 0.0015 * z )* << 193 G4double sq = ( 0.18 + 0.0015 * z ) / (Zi*Zi); >> 194 if(tq2 < 0.2) sq *= (1.0 - tq2 + 0.5*tq2*tq2); >> 195 else sq *= std::exp(-tq2); >> 196 sq += 1.0; 163 // G4cout << "sq= " << sq << G4endl; 197 // G4cout << "sq= " << sq << G4endl; 164 198 165 // Screen length according to 199 // Screen length according to 166 // J.F.Ziegler and J.M.Manoyan, The stoppi 200 // J.F.Ziegler and J.M.Manoyan, The stopping of ions in compaunds, 167 // Nucl. Inst. & Meth. in Phys. Res. B35 ( 201 // Nucl. Inst. & Meth. in Phys. Res. B35 (1988) 215-228. 168 202 169 G4double lambda = 10.0 * vF *g4calc->A23(1 << 203 G4double lambda = 10.0 * vF / (zi13 * (6.0 + q)); >> 204 if(q < 0.2) lambda *= (1.0 - 0.66666667*q - q*q/9.0); >> 205 else lambda *= std::pow(1.0-q, 0.666666); >> 206 170 G4double lambda2 = lambda*lambda; 207 G4double lambda2 = lambda*lambda; 171 G4double xx = (0.5/q - 0.5)*G4Log(1.0 + la << 172 208 173 effCharge *= q; << 209 G4double xx = (0.5/q - 0.5)/vFsq; >> 210 if(lambda2 < 0.2) xx *= lambda2*(1.0 - 0.5*lambda2); >> 211 else xx *= std::log(1.0 + lambda2); >> 212 174 chargeCorrection = sq * (1.0 + xx); 213 chargeCorrection = sq * (1.0 + xx); >> 214 175 } 215 } 176 // G4cout << "G4ionEffectiveCharge: charge= 216 // G4cout << "G4ionEffectiveCharge: charge= " << charge << " q= " << q 177 // << " chargeCor= " << chargeCorrec 217 // << " chargeCor= " << chargeCorrection 178 // << " e(MeV)= " << kineticEnergy << 218 // << " e(MeV)= " << kineticEnergy/MeV << G4endl; 179 return effCharge; 219 return effCharge; 180 } 220 } 181 221 182 //....oooOO0OOooo........oooOO0OOooo........oo 222 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 223 >> 224 183 225