Geant4_10
G4HETCNeutron.cc
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26 // $Id: G4HETCNeutron.cc 68028 2013-03-13 13:48:15Z gcosmo $
27 //
28 // by V. Lara
29 //
30 // Modified:
31 // 23.08.2010 V.Ivanchenko general cleanup, move constructor and destructor
32 // the source, use G4Pow
33 
34 #include "G4HETCNeutron.hh"
35 #include "G4PhysicalConstants.hh"
36 #include "G4SystemOfUnits.hh"
37 #include "G4Neutron.hh"
38 
40  : G4HETCFragment(G4Neutron::Neutron(), &theNeutronCoulombBarrier)
41 {}
42 
44 {}
45 
47 {
48  return 0.76+2.2/g4pow->Z13(GetRestA());
49 }
50 
52 {
53  return (2.12/g4pow->Z23(GetRestA())-0.05)*MeV/GetAlpha();
54 }
55 
57 {
58  // (2s+1)
59  return 2.0;
60 }
61 
63 {
64  // Number of protons in emitted fragment
65  G4int Pa = GetZ();
66  // Number of neutrons in emitted fragment
67  G4int Na = GetA() - Pa;
68 
69  G4int TargetZ = GetRestZ();
70  G4int TargetA = GetRestA();
71  G4double r = G4double(TargetZ)/G4double(TargetA);
72 
73  G4int P = aFragment.GetNumberOfParticles();
74  G4int H = aFragment.GetNumberOfHoles();
75 
76  G4double result = 0.0;
77  if (P > 0)
78  {
79  result = (H + Na/(1.0-r))/P;
80  }
81 
82  return std::max(0.0,result);
83 }
84 
86 {
87  G4int H = aFragment.GetNumberOfHoles();
88  G4int Pb = aFragment.GetNumberOfParticles();
89  G4int Nb = Pb + H;
90  G4double g0 = (6.0/pi2)*aFragment.GetA_asInt()*theParameters->GetLevelDensity();
91 
92  G4double Ab = std::max(0.0,G4double(Pb*Pb+H*H+Pb-3*H)/(4.0*g0));
93  G4double Emax = GetMaximalKineticEnergy() - Ab;
94 
95  G4double cut = GetBeta() / (GetBeta()+Emax/G4double(Nb+1));
96  G4double x(0.0);
97  if (G4UniformRand() <= cut)
98  {
99  x = BetaRand(Nb,1);
100  }
101  else
102  {
103  x = BetaRand(Nb,2);
104  }
105 
106  return Emax * (1.0 - x);
107 }
G4double GetMaximalKineticEnergy() const
G4double BetaRand(const G4int N, const G4int L) const
G4int GetA() const
G4double G4NeutronHPJENDLHEData::G4double result
G4int GetNumberOfParticles() const
Definition: G4Fragment.hh:305
tuple x
Definition: test.py:50
int G4int
Definition: G4Types.hh:78
virtual G4double K(const G4Fragment &aFragment)
virtual G4double GetSpinFactor()
G4int GetNumberOfHoles() const
Definition: G4Fragment.hh:325
virtual G4double GetBeta()
#define G4UniformRand()
Definition: Randomize.hh:87
G4double Z13(G4int Z) const
Definition: G4Pow.hh:129
G4int GetA_asInt() const
Definition: G4Fragment.hh:218
virtual G4double GetKineticEnergy(const G4Fragment &aFragment)
G4int GetRestZ() const
virtual G4double GetAlpha()
jump r
Definition: plot.C:36
T max(const T t1, const T t2)
brief Return the largest of the two arguments
G4double Z23(G4int Z) const
Definition: G4Pow.hh:153
G4int GetRestA() const
G4PreCompoundParameters * theParameters
G4int GetZ() const
double G4double
Definition: G4Types.hh:76