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G4ParticleHPThermalBoost.hh
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27 // 081024 G4NucleiPropertiesTable:: to G4NucleiProperties::
28 //
29 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
30 //
31 #ifndef G4ParticleHPThermalBoost_h
32 #define G4ParticleHPThermalBoost_h
33 
34 #include "G4HadProjectile.hh"
35 #include "G4Element.hh"
36 #include "G4ReactionProduct.hh"
37 #include "G4Nucleus.hh"
38 #include "G4NucleiProperties.hh"
39 #include "G4Electron.hh"
40 #include "G4Neutron.hh"
41 
43 {
44 public:
46  const G4Element * anE,
47  G4double aT)
48  {
49  G4double theA = anE->GetN();
50  G4double theZ = anE->GetZ();
51  return GetThermalEnergy(aP, theA ,theZ, aT);
52  }
53 
55  G4double theA, G4double theZ,
56  G4double aT)
57  {
58  // prepare neutron
59  G4double eKinetic = aP.GetKineticEnergy();
60  G4ReactionProduct theNeutronRP( const_cast<G4ParticleDefinition *>(aP.GetDefinition()) );
61  theNeutronRP.SetMomentum( aP.Get4Momentum().vect() );
62  theNeutronRP.SetKineticEnergy( eKinetic );
63  G4ThreeVector neuVelo = (1./aP.GetDefinition()->GetPDGMass())*theNeutronRP.GetMomentum();
64 
65  // prepare properly biased thermal nucleus
66  G4Nucleus aNuc;
67  G4double eps = 0.0001;
68  G4double eleMass;
69  eleMass = ( G4NucleiProperties::GetNuclearMass( static_cast<G4int>(theA+eps) , static_cast<G4int>(theZ+eps) ) ) / G4Neutron::Neutron()->GetPDGMass();
70 
71  G4ReactionProduct aThermalNuc = aNuc.GetBiasedThermalNucleus(eleMass, neuVelo, aT);
72 
73  // boost to rest system and return
74  G4ReactionProduct boosted;
75  boosted.Lorentz(theNeutronRP, aThermalNuc);
76  return boosted.GetKineticEnergy();
77  }
78 };
79 #endif
static G4double GetNuclearMass(const G4double A, const G4double Z)
void Lorentz(const G4ReactionProduct &p1, const G4ReactionProduct &p2)
G4double GetN() const
Definition: G4Element.hh:135
void SetKineticEnergy(const G4double en)
void SetMomentum(const G4double x, const G4double y, const G4double z)
G4double GetZ() const
Definition: G4Element.hh:131
static const G4double eps
G4double GetThermalEnergy(const G4HadProjectile &aP, G4double theA, G4double theZ, G4double aT)
G4ReactionProduct GetBiasedThermalNucleus(G4double aMass, G4ThreeVector aVelocity, G4double temp=-1) const
Definition: G4Nucleus.cc:113
Hep3Vector vect() const
const G4ParticleDefinition * GetDefinition() const
G4double GetKineticEnergy() const
static G4Neutron * Neutron()
Definition: G4Neutron.cc:104
const G4LorentzVector & Get4Momentum() const
G4double GetThermalEnergy(const G4HadProjectile &aP, const G4Element *anE, G4double aT)
G4double GetKineticEnergy() const
G4double GetPDGMass() const
G4ThreeVector GetMomentum() const
double G4double
Definition: G4Types.hh:76