G4IonProtonCrossSection.cc

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00025 //
00026 // $Id$
00027 //
00028 // -------------------------------------------------------------------
00029 //
00030 // GEANT4 Class file
00031 //
00032 //
00033 // File name:  G4IonProtonCrossSection
00034 //
00035 // Author  Ivantchenko, Geant4, 30 July 2010
00036 //
00037 // Modifications:
00038 //
00039 
00040 #include "G4IonProtonCrossSection.hh"
00041 #include "G4SystemOfUnits.hh"
00042 #include "G4ProtonInelasticCrossSection.hh"
00043 #include "G4DynamicParticle.hh"
00044 #include "G4Element.hh"
00045 #include "G4HadTmpUtil.hh"
00046 
00047 using namespace std;
00048 
00049 G4IonProtonCrossSection::G4IonProtonCrossSection() 
00050   : G4VCrossSectionDataSet("AxenWellischIonH") 
00051 {
00052   theForward = new G4ProtonInelasticCrossSection();
00053 }
00054 
00055 G4IonProtonCrossSection::~G4IonProtonCrossSection()
00056 {}
00057 
00058 G4bool 
00059 G4IonProtonCrossSection::IsElementApplicable(const G4DynamicParticle* dp, 
00060                                              G4int Z, const G4Material*)
00061 {
00062   return ((1 == Z) && (dp->GetDefinition()->GetPDGCharge()/eplus > 1.5)); 
00063 }
00064 
00065 
00066 G4double 
00067 G4IonProtonCrossSection::GetElementCrossSection(
00068                                    const G4DynamicParticle* dp, 
00069                                    G4int, const G4Material*)
00070 {
00071   const G4ParticleDefinition* p = dp->GetDefinition();
00072   G4double e = dp->GetKineticEnergy()*CLHEP::proton_mass_c2/p->GetPDGMass();
00073   return 
00074     theForward->GetProtonCrossSection(e, G4lrint(p->GetPDGCharge()/eplus));
00075 }
00076 
00077 void 
00078 G4IonProtonCrossSection::CrossSectionDescription(std::ostream& outFile) const
00079 {
00080   outFile << "G4IonProtonCrossSection calculates the inelastic cross section\n"
00081           << "for ions scattering from protons using inverse kinematics and\n"
00082           << "the Axen-Wellisch inelastic cross sections in the\n"
00083           << "G4ProtonInelasticCrossSection class.\n"; 
00084 }
00085 

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