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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 #include "G4INCLPauliGlobal.hh"
39 #include "G4INCLRandom.hh"
40
41 namespace G4INCL {
42
43 PauliGlobal::PauliGlobal() {}
44 PauliGlobal::~PauliGlobal() {}
45
46 G4bool PauliGlobal::isBlocked(ParticleList const &pL, Nucleus const * const n) {
47 for(ParticleIter p=pL.begin(), e=pL.end(); p!=e; ++p) {
48 // Pauli blocking only applies to nucleons
49 if(!(*p)->isNucleon()) continue;
50
51 // If the particle is above T_F, it is never blocked
52 const ParticleType t = (*p)->getType();
53 const G4double pFermi = n->getPotential()->getFermiMomentum(t);
54 const G4double pFermiSquared = pFermi*pFermi;
55 if((*p)->getMomentum().mag2() > pFermiSquared) continue;
56
57 // Count particles of the same type as p below the Fermi sea
58 ParticleList const &particles = n->getStore()->getParticles();
59 G4int nSea = 0;
60 for(ParticleIter i=particles.begin(), end=particles.end(); i!=end; ++i) {
61 if((*i)->getType() != t) continue;
62 const G4double pmod2 = (*i)->getMomentum().mag2();
63 if(pmod2<pFermiSquared) nSea++;
64 }
65
66 // Compute the blocking probability
67 G4double probBlocking;
68 if(t==Proton)
69 probBlocking = ((G4double) nSea)/((G4double) n->getInitialZ());
70 else
71 probBlocking = ((G4double) nSea)/((G4double) (n->getInitialA() - n->getInitialZ()));
72
73 // The avatar is blocked if any particle is blocked
74 if(Random::shoot() < probBlocking) return true;
75
76 }
77
78 // Not blocked
79 return false;
80
81 }
82 }
83