G4TritonEvaporationProbability.cc

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// $Id: G4TritonEvaporationProbability.cc 96634 2016-04-27 09:31:49Z gcosmo $
//
// J.M. Quesada (August2008). Based on:
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Oct 1998)
//
// Modified:
// 03-09-2008 J.M. Quesada for external choice of inverse cross section option
// 17-11-2010 V.Ivanchenko integer Z and A

#include "G4TritonEvaporationProbability.hh"

G4TritonEvaporationProbability::G4TritonEvaporationProbability() :
    G4EvaporationProbability(3,1,2.0,&theCoulombBarrier) 
{}

G4TritonEvaporationProbability::~G4TritonEvaporationProbability()
{}

G4double G4TritonEvaporationProbability::CalcAlphaParam(const G4Fragment& fragment) 
{ 
  // Data comes from 
  // Dostrovsky, Fraenkel and Friedlander
  // Physical Review, vol 116, num. 3 1959
  // 
  // const G4int size = 5;
  // G4double Zlist[5] = { 10.0, 20.0, 30.0, 50.0, 70.0};
  // G4double Cp[5] = { 0.50, 0.28, 0.20, 0.15, 0.10};
  // C for triton is equal to C for protons divided by 3

  G4int aZ = fragment.GetZ_asInt()-GetZ();
  G4double C = (aZ >= 70) ? 0.10 :
    ((((0.15417e-06*aZ) - 0.29875e-04)*aZ + 0.21071e-02)*aZ 
     - 0.66612e-01)*aZ + 0.98375;

  return 1.0 + C/3.0;
}
        
G4double G4TritonEvaporationProbability::CalcBetaParam(const G4Fragment & ) 
{ 
  return 0.0; 
}