G4He3EvaporationProbability.cc

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// $Id: G4He3EvaporationProbability.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 "G4He3EvaporationProbability.hh"

G4He3EvaporationProbability::G4He3EvaporationProbability() :
   G4EvaporationProbability(3,2,2.0,&theCoulombBarrier)
{}

G4He3EvaporationProbability::~G4He3EvaporationProbability() 
{}

G4double G4He3EvaporationProbability::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 Calpha[5] = { 0.10, 0.10, 0.10, 0.08, 0.06};
  // C for He3 is equal to C for alpha times 4/3

  G4int aZ = fragment.GetZ_asInt() - GetZ();
  G4double C;
    
  if (aZ <= 30)
    {
      C = 0.10;
    }
  else if (aZ <= 50)
    {
      C = 0.1 - (aZ - 30)*0.001;
    }
  else if (aZ < 70)
    {
      C = 0.08 - (aZ - 50)*0.001;
    }
  else
    {
      C = 0.06;
    }
  return 1.0 + C*4/3.0;
}
    
G4double G4He3EvaporationProbability::CalcBetaParam(const G4Fragment & )  
{ 
  return 0.0; 
}