Geant4_10
G4INCLPauliGlobal.cc
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25 //
26 // INCL++ intra-nuclear cascade model
27 // Pekka Kaitaniemi, CEA and Helsinki Institute of Physics
28 // Davide Mancusi, CEA
29 // Alain Boudard, CEA
30 // Sylvie Leray, CEA
31 // Joseph Cugnon, University of Liege
32 //
33 #define INCLXX_IN_GEANT4_MODE 1
34 
35 #include "globals.hh"
36 
37 #include "G4INCLPauliGlobal.hh"
38 #include "G4INCLRandom.hh"
39 
40 namespace G4INCL {
41 
44 
45  G4bool PauliGlobal::isBlocked(ParticleList const &pL, Nucleus const * const n) {
46  for(ParticleIter p=pL.begin(), e=pL.end(); p!=e; ++p) {
47  // Pauli blocking only applies to nucleons
48  if(!(*p)->isNucleon()) continue;
49 
50  // If the particle is above T_F, it is never blocked
51  const ParticleType t = (*p)->getType();
52  const G4double pFermi = n->getPotential()->getFermiMomentum(t);
53  const G4double pFermiSquared = pFermi*pFermi;
54  if((*p)->getMomentum().mag2() > pFermiSquared) continue;
55 
56  // Count particles of the same type as p below the Fermi sea
57  const ParticleList particles = n->getStore()->getParticles();
58  G4int nSea = 0;
59  for(ParticleIter i=particles.begin(), end=particles.end(); i!=end; ++i) {
60  if((*i)->getType() != t) continue;
61  const G4double pmod2 = (*i)->getMomentum().mag2();
62  if(pmod2<pFermiSquared) nSea++;
63  }
64 
65  // Compute the blocking probability
66  G4double probBlocking;
67  if(t==Proton)
68  probBlocking = ((G4double) nSea)/((G4double) n->getInitialZ());
69  else
70  probBlocking = ((G4double) nSea)/((G4double) (n->getInitialA() - n->getInitialZ()));
71 
72  // The avatar is blocked if any particle is blocked
73  if(Random::shoot() < probBlocking) return true;
74 
75  }
76 
77  // Not blocked
78  return false;
79 
80  }
81 }
G4int getInitialZ() const
ParticleList const & getParticles() const
Definition: G4INCLStore.hh:231
G4double getFermiMomentum(const Particle *const p) const
Return the Fermi momentum for a particle.
const char * p
Definition: xmltok.h:285
G4int getInitialA() const
Store * getStore() const
int G4int
Definition: G4Types.hh:78
Char_t n[5]
bool G4bool
Definition: G4Types.hh:79
G4bool isBlocked(ParticleList const &, Nucleus const *const)
NuclearPotential::INuclearPotential const * getPotential() const
Getter for thePotential.
G4double shoot()
Definition: G4INCLRandom.cc:74
double G4double
Definition: G4Types.hh:76
ParticleList::const_iterator ParticleIter