#include <G4IonsKoxCrossSection.hh>
Inheritance diagram for G4IonsKoxCrossSection:
Public Member Functions | |
| G4IonsKoxCrossSection () | |
| ~G4IonsKoxCrossSection () | |
| virtual G4bool | IsElementApplicable (const G4DynamicParticle *aDP, G4int Z, const G4Material *) |
| virtual G4double | GetElementCrossSection (const G4DynamicParticle *, G4int Z, const G4Material *) |
| virtual void | CrossSectionDescription (std::ostream &) const |
Definition at line 46 of file G4IonsKoxCrossSection.hh.
| G4IonsKoxCrossSection::G4IonsKoxCrossSection | ( | ) |
Definition at line 41 of file G4IonsKoxCrossSection.cc.
00042 : G4VCrossSectionDataSet("IonsKox"), lowerLimit ( 10*MeV ), 00043 r0 ( 1.1*fermi ), rc ( 1.3*fermi ) 00044 {}
| G4IonsKoxCrossSection::~G4IonsKoxCrossSection | ( | ) |
| void G4IonsKoxCrossSection::CrossSectionDescription | ( | std::ostream & | ) | const [virtual] |
Reimplemented from G4VCrossSectionDataSet.
Definition at line 50 of file G4IonsKoxCrossSection.cc.
00051 { 00052 outFile << "G4IonsKoxCrossSection calculates the total reaction cross\n" 00053 << "section for nucleus-nucleus scattering using the Kox\n" 00054 << "parameterization. It is valid for projectiles and targets\n" 00055 << "of all Z, at projectile energies up to 10 GeV/n. If the\n" 00056 << "projectile energy is less than 10 MeV/n, a zero cross section\n" 00057 << "is returned.\n"; 00058 }
| G4double G4IonsKoxCrossSection::GetElementCrossSection | ( | const G4DynamicParticle * | , | |
| G4int | Z, | |||
| const G4Material * | ||||
| ) | [virtual] |
Reimplemented from G4VCrossSectionDataSet.
Definition at line 67 of file G4IonsKoxCrossSection.cc.
References G4lrint(), G4ParticleDefinition::GetBaryonNumber(), G4DynamicParticle::GetDefinition(), G4DynamicParticle::GetKineticEnergy(), G4DynamicParticle::GetMass(), G4DynamicParticle::GetMomentum(), G4NucleiProperties::GetNuclearMass(), G4ParticleDefinition::GetPDGCharge(), G4NistManager::Instance(), and G4INCL::Math::pi.
00069 { 00070 G4double xsection = 0.0; 00071 00072 G4int Ap = aParticle->GetDefinition()->GetBaryonNumber(); 00073 G4int Zp = G4int(aParticle->GetDefinition()->GetPDGCharge() / eplus + 0.5); 00074 G4double ke_per_N = aParticle->GetKineticEnergy() / Ap; 00075 00076 // Apply energy check, if less than lower limit then 0 value is returned 00077 // if ( ke_per_N < lowerLimit ) return xsection; 00078 00079 G4int At = G4lrint(G4NistManager::Instance()->GetAtomicMassAmu(ZZ)); 00080 G4int Zt = ZZ; 00081 00082 G4double one_third = 1.0 / 3.0; 00083 00084 G4double cubicrAt = std::pow ( G4double(At) , G4double(one_third) ); 00085 G4double cubicrAp = std::pow ( G4double(Ap) , G4double(one_third) ); 00086 00087 // rc divide fermi 00088 G4double Bc = Zt * Zp / ( (rc/fermi) * (cubicrAp+cubicrAt) ); 00089 00090 G4double targ_mass = G4NucleiProperties::GetNuclearMass(At, Zt); 00091 G4double proj_mass = aParticle->GetMass(); 00092 G4double proj_momentum = aParticle->GetMomentum().mag(); 00093 00094 G4double Ecm = calEcm ( proj_mass , targ_mass , proj_momentum ); 00095 if( Ecm <= Bc) return xsection; 00096 00097 G4double Rvol = r0 * ( cubicrAp + cubicrAt ); 00098 00099 // G4double ke_per_N = aParticle->GetKineticEnergy() / Ap; 00100 G4double c = calCeValue ( ke_per_N / MeV ); 00101 00102 G4double a = 1.85; 00103 G4double Rsurf = r0 * (a*cubicrAp * cubicrAt/(cubicrAp + cubicrAt) - c); 00104 G4double D = 5.0 * ( At - 2 * Zt ) * Zp / ( Ap * At ); 00105 Rsurf = Rsurf + D * fermi; // multiply D by fermi 00106 00107 G4double Rint = Rvol + Rsurf; 00108 xsection = pi * Rint * Rint * ( 1 - Bc / ( Ecm / MeV ) ); 00109 00110 return xsection; 00111 }
| G4bool G4IonsKoxCrossSection::IsElementApplicable | ( | const G4DynamicParticle * | aDP, | |
| G4int | Z, | |||
| const G4Material * | ||||
| ) | [virtual] |
Reimplemented from G4VCrossSectionDataSet.
Definition at line 60 of file G4IonsKoxCrossSection.cc.
References G4ParticleDefinition::GetBaryonNumber(), and G4DynamicParticle::GetDefinition().
00062 { 00063 return (1 <= aDP->GetDefinition()->GetBaryonNumber()); 00064 }
1.4.7