Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/pre_equilibrium/exciton_model/src/G4HETCChargedFragment.cc

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 25 //
 26 //
 27 // by V. Lara
 28 //
 29 // Modified:
 30 // 23.08.2010 V.Ivanchenko general cleanup, move constructor and destructor 
 31 //            the source, use G4Pow
 32 //
 33 
 34 #include "G4HETCChargedFragment.hh"
 35 #include "G4PhysicalConstants.hh"
 36 #include "G4VCoulombBarrier.hh"
 37 #include "G4NuclearLevelData.hh"
 38 
 39 G4HETCChargedFragment::G4HETCChargedFragment(
 40   const G4ParticleDefinition* pd, G4VCoulombBarrier* aCoulombBarrier)
 41   : G4HETCFragment(pd, aCoulombBarrier)
 42 {}
 43 
 44 G4double G4HETCChargedFragment::SampleKineticEnergy(const G4Fragment& fr)
 45 {
 46   G4int Pb = fr.GetNumberOfParticles();
 47   G4int H = fr.GetNumberOfHoles();
 48 
 49   G4double g0 = (6.0/pi2)*fNucData->GetLevelDensity(theFragZ, theFragA,
 50                 fr.GetExcitationEnergy());
 51 
 52   G4double Ab = std::max(0.0,G4double(Pb*Pb+H*H+Pb-3*H)/(4.0*g0));
 53   G4double Emax = theMaxKinEnergy - Ab;
 54 
 55   G4double x = BetaRand(Pb + H, 2);
 56   return Emax - (Emax - theCoulombBarrier)*x;
 57 }
 58