Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/pre_equilibrium/exciton_model/src/G4PreCompoundTriton.cc

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 26 //
 27 // -------------------------------------------------------------------
 28 //
 29 // GEANT4 Class file
 30 //
 31 //
 32 // File name:     G4PreCompoundTriton
 33 //
 34 // Author:         V.Lara
 35 //
 36 // Modified:  
 37 // 21.08.2008 J. M. Quesada add choice of options  
 38 // 20.08.2010 V.Ivanchenko added G4Pow and G4PreCompoundParameters pointers
 39 //                         use int Z and A and cleanup
 40 // 05.07.2013 J.M. Quesada FactorialFactor fixed
 41 //
 42  
 43 #include "G4PreCompoundTriton.hh"
 44 #include "G4Triton.hh"
 45 #include "G4CoulombBarrier.hh"
 46 
 47 G4PreCompoundTriton::G4PreCompoundTriton()
 48   : G4PreCompoundIon(G4Triton::Triton(), new G4CoulombBarrier(3, 1))
 49 {}
 50 
 51 G4double G4PreCompoundTriton::FactorialFactor(G4int N, const G4int P) const
 52 {
 53   return static_cast<G4double>(((N-3)*(P-2)*(N-2))*((P-1)*(N-1)*P))/12.0; 
 54 }
 55   
 56 G4double G4PreCompoundTriton::CoalescenceFactor(G4int A) const
 57 {
 58   return 243.0/static_cast<G4double>(A*A);
 59 }    
 60 
 61 G4double G4PreCompoundTriton::GetRj(G4int nParticles, G4int nCharged) const
 62 {
 63   G4double rj = 0.0;
 64   if(nCharged >= 1 && (nParticles-nCharged) >= 2) {
 65     G4double denominator = (G4double)(nParticles*(nParticles-1)*(nParticles-2));
 66     rj = (3*nCharged*(nParticles-nCharged)*(nParticles-nCharged-1))
 67       /denominator; 
 68   }
 69   return rj;
 70 }
 71 
 72 G4double G4PreCompoundTriton::GetAlpha() const
 73 {
 74   G4double C = 0.0;
 75   if (theFragZ <= 70)
 76     {
 77       C = 0.10;
 78     } 
 79   else 
 80     {
 81       C = ((((0.15417e-06*theFragZ) - 0.29875e-04)*theFragZ 
 82       + 0.21071e-02)*theFragZ - 0.66612e-01)*theFragZ + 0.98375; 
 83     }
 84  
 85   return 1.0 + C/3.0;
 86 }
 87 
 88