Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/de_excitation/evaporation/src/G4He3EvaporationProbability.cc

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 26 //
 27 // J.M. Quesada (August2008). Based on:
 28 //
 29 // Hadronic Process: Nuclear De-excitations
 30 // by V. Lara (Oct 1998)
 31 //
 32 // Modified:
 33 // 03-09-2008 J.M. Quesada for external choice of inverse cross section option
 34 // 17-11-2010 V.Ivanchenko integer Z and A
 35 
 36 #include "G4He3EvaporationProbability.hh"
 37 
 38 G4He3EvaporationProbability::G4He3EvaporationProbability() :
 39    G4EvaporationProbability(3,2,2.0)
 40 {}
 41 
 42 G4double G4He3EvaporationProbability::CalcAlphaParam(const G4Fragment& fr)
 43 { 
 44   // Data comes from 
 45   // Dostrovsky, Fraenkel and Friedlander
 46   // Physical Review, vol 116, num. 3 1959
 47   // 
 48   // const G4int size = 5;
 49   // G4double Zlist[5] = { 10.0, 20.0, 30.0, 50.0, 70.0};
 50   //  G4double Calpha[5] = { 0.10, 0.10, 0.10, 0.08, 0.06};
 51   // C for He3 is equal to C for alpha times 4/3
 52 
 53   G4int aZ = fr.GetZ_asInt() - GetZ();
 54   G4double C;
 55   
 56   if (aZ <= 30)
 57     {
 58       C = 0.10;
 59     }
 60   else if (aZ <= 50)
 61     {
 62       C = 0.1 - (aZ - 30)*0.001;
 63     }
 64   else if (aZ < 70)
 65     {
 66       C = 0.08 - (aZ - 50)*0.001;
 67     }
 68   else
 69     {
 70       C = 0.06;
 71     }
 72   return 1.0 + C*4/3.0;
 73 }
 74   
 75 G4double G4He3EvaporationProbability::CalcBetaParam(const G4Fragment & )  
 76 { 
 77   return 0.0; 
 78 }
 79 
 80