Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/pre_equilibrium/exciton_model/src/G4HETCProton.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 #include "G4HETCProton.hh"
 34 #include "G4Proton.hh"
 35 #include "G4CoulombBarrier.hh"
 36 
 37 G4HETCProton::G4HETCProton() 
 38   : G4HETCChargedFragment(G4Proton::Proton(), new G4CoulombBarrier(1, 1))
 39 {}
 40 
 41 G4double G4HETCProton::GetAlpha() const
 42 {
 43   G4double C = 0.0;
 44   if (theResZ <= 70) 
 45     {
 46       C = 0.10;
 47     } 
 48   else 
 49     {
 50       C = ((((0.15417e-06*theResZ) - 0.29875e-04)*theResZ 
 51       + 0.21071e-02)*theResZ - 0.66612e-01)*theResZ + 0.98375;
 52     }
 53   return 1.0 + C;
 54 }
 55   
 56 G4double G4HETCProton::GetSpinFactor() const
 57 {
 58   // 2s+1
 59   return 2.0;
 60 }
 61 
 62 G4double G4HETCProton::K(const G4Fragment& aFragment) const
 63 {
 64   // Number of protons in emitted fragment
 65   G4int Pa = theZ;
 66 
 67   G4double r = G4double(theResZ)/G4double(theResA);
 68 
 69   G4int P = aFragment.GetNumberOfParticles();
 70   G4int H = aFragment.GetNumberOfHoles();
 71 
 72   G4double result = 0.0;
 73   if (P > 0)
 74     {
 75       result = (H*r + Pa)/(P*r);
 76     }
 77 
 78   return std::max(0.0,result);
 79 }
 80