Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/hadronic/models/inclxx/incl_physics/src/G4INCLNuclearPotentialEnergyIsospin.cc

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 25 //
 26 // INCL++ intra-nuclear cascade model
 27 // Alain Boudard, CEA-Saclay, France
 28 // Joseph Cugnon, University of Liege, Belgium
 29 // Jean-Christophe David, CEA-Saclay, France
 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
 31 // Sylvie Leray, CEA-Saclay, France
 32 // Davide Mancusi, CEA-Saclay, France
 33 //
 34 #define INCLXX_IN_GEANT4_MODE 1
 35 
 36 #include "globals.hh"
 37 
 38 /** \file G4INCLNuclearPotentialEnergyIsospin.cc
 39  * \brief Isospin- and energy-dependent nuclear potential.
 40  *
 41  * Provides an isospin- and energy-dependent nuclear potential.
 42  *
 43  * \date 21 March 2011
 44  * \author Davide Mancusi
 45  */
 46 
 47 #include "G4INCLNuclearPotentialEnergyIsospin.hh"
 48 #include "G4INCLParticleTable.hh"
 49 #include "G4INCLGlobals.hh"
 50 
 51 namespace G4INCL {
 52 
 53   namespace NuclearPotential {
 54 
 55     const G4double NuclearPotentialEnergyIsospin::alpha= 0.223;
 56 
 57     // Constructors
 58     NuclearPotentialEnergyIsospin::NuclearPotentialEnergyIsospin(const G4int A, const G4int Z, const G4bool aPionPotential)
 59       : NuclearPotentialIsospin(A,Z,aPionPotential)
 60     {}
 61 
 62     // Destructor
 63     NuclearPotentialEnergyIsospin::~NuclearPotentialEnergyIsospin() {}
 64 
 65     G4double NuclearPotentialEnergyIsospin::computePotentialEnergy(const Particle *particle) const {
 66 
 67       const G4double v0 = NuclearPotentialIsospin::computePotentialEnergy(particle);
 68 
 69       if(particle->isNucleon()) {
 70         const G4double t = particle->getKineticEnergy();
 71         const G4double tf = getFermiEnergy(particle);
 72         // Constant potential for T<Tf
 73         if(t < tf)
 74           return v0;
 75 
 76         // Linear function for T>Tf
 77         const G4double v = v0 - alpha*(t-tf)/(1-alpha);
 78         return (v>0.0) ? v : 0.0; // return 0.0 if v is negative
 79       } else
 80         return v0;
 81     }
 82 
 83   }
 84 }
 85 
 86