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G4INCLNuclearPotentialEnergyIsospinSmooth.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 
49 #include "G4INCLParticleTable.hh"
50 #include "G4INCLGlobals.hh"
51 
52 namespace G4INCL {
53 
54  namespace NuclearPotential {
55 
58 
59  // Constructors
61  : NuclearPotentialIsospin(A,Z,aPionPotential)
62  {}
63 
64  // Destructor
66 
68 
70 
71  if(particle->isNucleon()) {
72  const G4double t = particle->getKineticEnergy();
73  const G4double tf = getFermiEnergy(particle);
74  // Constant potential for T<Tf
75  if(t < tf)
76  return v0;
77 
78  // Linear function for Tf<T<T0, exponential function for T>T0
79  const G4double t0 = tf + v0*(1.-alpha)/alpha - deltaE; // deltaE before the linear potential vanishes
80  G4double v;
81  if(t<t0) {
82  v = v0 - alpha*(t-tf)/(1.-alpha);
83  } else {
84  const G4double v_at_t0 = v0 - alpha*(t0-tf)/(1.-alpha);
85  const G4double kappa = alpha / (v_at_t0 * (1.-alpha));
86  v = v_at_t0 * std::exp(kappa * (t0-t));
87  }
88  return (v>0.0) ? v : 0.0;
89  } else
90  return v0;
91  }
92 
93  }
94 }
95 
G4double getKineticEnergy() const
Get the particle kinetic energy.
static const G4double deltaE
Distance from the cusp where the exponential kicks in.
virtual G4double computePotentialEnergy(const Particle *const p) const
Isospin- and energy-dependent nuclear potential.
Float_t Z
double G4double
Definition: G4Types.hh:76
bool G4bool
Definition: G4Types.hh:79
NuclearPotentialEnergyIsospinSmooth(const G4int A, const G4int Z, const G4bool pionPotential)
double A(double temperature)
int G4int
Definition: G4Types.hh:78
G4double getFermiEnergy(const Particle *const p) const
Return the Fermi energy for a particle.
G4bool isNucleon() const