Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/de_excitation/evaporation/src/G4NeutronEvaporationProbability.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 "G4NeutronEvaporationProbability.hh"
 37 #include "G4SystemOfUnits.hh"
 38 #include "G4Pow.hh"
 39 
 40 G4NeutronEvaporationProbability::G4NeutronEvaporationProbability() :
 41     G4EvaporationProbability(1,0,2.0)
 42 {}
 43 
 44 G4double G4NeutronEvaporationProbability::CalcAlphaParam(const G4Fragment& fr)
 45 { 
 46   return 0.76+2.2/pG4pow->Z13(fr.GetA_asInt() - 1);
 47 }
 48   
 49 G4double G4NeutronEvaporationProbability::CalcBetaParam(const G4Fragment& fr)
 50 {
 51   // in MeV
 52   return (2.12/pG4pow->Z23(fr.GetA_asInt() - 1) - 0.05)/CalcAlphaParam(fr); 
 53 }
 54