Geant4  10.01.p02
G4NeutronHPIsotropic.cc
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25 //
26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron transport model.
29 //
30 #include "G4NeutronHPIsotropic.hh"
31 #include "G4PhysicalConstants.hh"
32 #include "G4SystemOfUnits.hh"
33 #include "Randomize.hh"
34 #include "G4Gamma.hh"
35 #include "G4Electron.hh"
36 #include "G4Positron.hh"
37 #include "G4Neutron.hh"
38 #include "G4Proton.hh"
39 #include "G4Deuteron.hh"
40 #include "G4Triton.hh"
41 #include "G4He3.hh"
42 #include "G4Alpha.hh"
43 #include "G4IonTable.hh"
44 
45 
46 void G4NeutronHPIsotropic::Init(std::istream & )
47 {
48 }
49 
51 {
52  G4ReactionProduct * result = new G4ReactionProduct;
53  G4int Z = static_cast<G4int>(massCode/1000);
54  G4int A = static_cast<G4int>(massCode-1000*Z);
55 
56  if(massCode==0)
57  {
58  result->SetDefinition(G4Gamma::Gamma());
59  }
60  else if(A==0)
61  {
63  if(Z==1) result->SetDefinition(G4Positron::Positron());
64  }
65  else if(A==1)
66  {
68  if(Z==1) result->SetDefinition(G4Proton::Proton());
69  }
70  else if(A==2)
71  {
73  }
74  else if(A==3)
75  {
76  result->SetDefinition(G4Triton::Triton());
77  if(Z==2) result->SetDefinition(G4He3::He3());
78  }
79  else if(A==4)
80  {
81  result->SetDefinition(G4Alpha::Alpha());
82  //110607 TK modified following parts for migration to G4NDL3.15 (ENDF VII.r0)
83  //if(Z!=2) throw G4HadronicException(__FILE__, __LINE__, "Unknown ion case 1");
84  if(Z!=2)
85  {
86  result->SetDefinition( G4IonTable::GetIonTable()->GetIon ( Z , A , 0.0 ) );
87  }
88  }
89  else
90  {
91  //110607 TK modified following parts for migration to G4NDL3.15 (ENDF VII.r0)
92  result->SetDefinition( G4IonTable::GetIonTable()->GetIon ( Z , A , 0.0 ) );
93  //throw G4HadronicException(__FILE__, __LINE__, "G4NeutronHPIsotropic: Unknown ion case 2");
94  }
95 
96  G4double cosTh = G4UniformRand();
97  G4double phi = twopi*G4UniformRand();
98  G4double theta = std::acos(cosTh);
99  G4double sinth = std::sin(theta);
100 
101 // we need the the Q value of the reaction
102  result->SetKineticEnergy(std::max(0.001*MeV, anEnergy+GetQValue()));
103  G4double mtot = result->GetTotalMomentum();
104  G4ThreeVector tempVector(mtot*sinth*std::cos(phi), mtot*sinth*std::sin(phi), mtot*std::cos(theta) );
105  result->SetMomentum(tempVector);
106 
107  return result;
108 }
static const double MeV
Definition: G4SIunits.hh:193
G4double GetTotalMomentum() const
CLHEP::Hep3Vector G4ThreeVector
void SetKineticEnergy(const G4double en)
void SetMomentum(const G4double x, const G4double y, const G4double z)
int G4int
Definition: G4Types.hh:78
void SetDefinition(const G4ParticleDefinition *aParticleDefinition)
#define G4UniformRand()
Definition: Randomize.hh:93
static G4Triton * Triton()
Definition: G4Triton.cc:95
static G4Proton * Proton()
Definition: G4Proton.cc:93
static G4Neutron * Neutron()
Definition: G4Neutron.cc:104
static G4Gamma * Gamma()
Definition: G4Gamma.cc:86
static const G4double A[nN]
static G4Deuteron * Deuteron()
Definition: G4Deuteron.cc:94
static G4IonTable * GetIonTable()
Definition: G4IonTable.hh:78
static G4Positron * Positron()
Definition: G4Positron.cc:94
T max(const T t1, const T t2)
brief Return the largest of the two arguments
G4ReactionProduct * Sample(G4double anEnergy, G4double massCode, G4double mass)
static G4Electron * Electron()
Definition: G4Electron.cc:94
static G4Alpha * Alpha()
Definition: G4Alpha.cc:89
void Init(std::istream &aDataFile)
double G4double
Definition: G4Types.hh:76
static G4He3 * He3()
Definition: G4He3.cc:94