Geant4  10.02.p02
G4VPreCompoundFragment.cc
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26 // $Id: G4VPreCompoundFragment.cc 90337 2015-05-26 08:34:27Z gcosmo $
27 //
28 // J. M. Quesada (August 2008). Based on previous work by V. Lara
29 //
30 // Modified:
31 // 20.08.2010 V.Ivanchenko added G4Pow and G4PreCompoundParameters pointers
32 // use int Z and A and cleanup
33 
35 #include "G4SystemOfUnits.hh"
37 #include "G4NucleiProperties.hh"
38 
40  const G4ParticleDefinition* part, G4VCoulombBarrier* aCoulombBarrier)
41  : particle(part), theCoulombBarrierPtr(aCoulombBarrier),
42  theMomentum(0.,0.,0.,0.),
43  theA(particle->GetBaryonNumber()),
44  theZ(G4lrint(particle->GetPDGCharge())),
45  theResA(0),theResZ(0),theFragA(0),theFragZ(0),theBindingEnergy(0.0),
46  theMaxKinEnergy(0.0),theResMass(0.0),
47  theReducedMass(0.0),
48  theEmissionProbability(0.0),theCoulombBarrier(0.0),
49  OPTxs(3),useSICB(false)
50 {
54  theResA13 = 0;
55 }
56 
58 {
59  delete theParameters;
60 }
61 
62 std::ostream&
63 operator << (std::ostream &out, const G4VPreCompoundFragment &theFragment)
64 {
65  out << &theFragment;
66  return out;
67 }
68 
69 std::ostream&
70 operator << (std::ostream &out, const G4VPreCompoundFragment *theFragment)
71 {
72  out
73  << "PreCompoundModel Emitted Fragment: Z= " << theFragment->GetZ()
74  << " A= " << theFragment->GetA()
75  << " Mass(GeV)= " << theFragment->GetNuclearMass()/CLHEP::GeV;
76  return out;
77 }
78 
79 void
81 {
82  theFragA = aFragment.GetA_asInt();
83  theFragZ = aFragment.GetZ_asInt();
84  theResA = theFragA - theA;
85  theResZ = theFragZ - theZ;
86 
87  if ((theResA < theResZ) || (theResA < theA) || (theResZ < theZ))
88  {
89  // In order to be sure that emission probability will be 0.
90  theMaxKinEnergy = 0.0;
91  return;
92  }
93 
95 
96  // Calculate Coulomb barrier
98  GetCoulombBarrier(theResA,theResZ,aFragment.GetExcitationEnergy());
99 
100  // Calculate masses
102  theReducedMass = theResMass*theMass/(theResMass + theMass);
103 
104  // Compute Binding Energies for fragments
105  // needed to separate a fragment from the nucleus
106  theBindingEnergy = theResMass + theMass - aFragment.GetGroundStateMass();
107 
108  // Compute Maximal Kinetic Energy which can be carried by fragments
109  // after separation - the true assimptotic value
110  G4double Ecm = aFragment.GetMomentum().m();
111  theMaxKinEnergy = ((Ecm-theResMass)*(Ecm+theResMass) + theMass*theMass)
112  /(2.0*Ecm) - theMass;
113 }
static G4Pow * GetInstance()
Definition: G4Pow.cc:55
static G4double GetNuclearMass(const G4double A, const G4double Z)
const G4ParticleDefinition * particle
G4int GetA() const
void Initialize(const G4Fragment &aFragment)
G4double Z13(G4int Z) const
Definition: G4Pow.hh:127
G4int GetA_asInt() const
Definition: G4Fragment.hh:256
const G4LorentzVector & GetMomentum() const
Definition: G4Fragment.hh:289
static const double GeV
Definition: G4SIunits.hh:214
G4double GetGroundStateMass() const
Definition: G4Fragment.hh:278
G4VCoulombBarrier * theCoulombBarrierPtr
G4double GetNuclearMass() const
G4double GetPDGMass() const
int G4lrint(double ad)
Definition: templates.hh:163
std::ostream & operator<<(std::ostream &out, const G4VPreCompoundFragment &theFragment)
G4int GetZ_asInt() const
Definition: G4Fragment.hh:261
G4PreCompoundParameters * theParameters
G4int GetZ() const
double G4double
Definition: G4Types.hh:76
G4double GetExcitationEnergy() const
Definition: G4Fragment.hh:273