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G4KaonMinusField.cc
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27 // -------------------------------------------------------------------
28 // GEANT 4 class implementation file
29 //
30 // CERN, Geneva, Switzerland
31 //
32 // File name: G4KaonMinusField.cc
33 //
34 // Author: Alessandro Brunengo (Alessandro.Brunengo@ge.infn.it)
35 //
36 // Creation date: 5 June 2000
37 // -------------------------------------------------------------------
38 
39 #include "G4KaonMinusField.hh"
40 #include "G4PhysicalConstants.hh"
41 #include "G4SystemOfUnits.hh"
42 #include "G4NucleiProperties.hh"
43 #include "G4VNuclearDensity.hh"
44 #include "G4FermiMomentum.hh"
45 #include "G4KaonMinus.hh"
46 #include "G4HadTmpUtil.hh"
47 #include "G4Pow.hh"
48 
50  : G4VNuclearField(nucleus)
51 {
52  theCoeff = coeff;
53 }
54 
55 
57 { }
58 
59 
61 {
62 // Field is 0 out of the nucleus!
63  if(aPosition.mag() >= radius) return 0.0;
64 
66 
70  G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
71  G4double reducedMass = kaonMass*nucleusMass/(kaonMass+nucleusMass);
72 
73  G4double density = theNucleus->GetNuclearDensity()->GetDensity(aPosition);
74 
75  return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*theCoeff*density+GetBarrier();
76 }
77 
78 
80 {
83  G4double coulombBarrier = (1.44/1.14) * MeV * Z / (1.0 + G4Pow::GetInstance()->Z13(A));
84  return -coulombBarrier;
85 }
86 
static G4Pow * GetInstance()
Definition: G4Pow.cc:55
virtual G4double GetBarrier()
virtual G4int GetCharge()=0
virtual G4double GetField(const G4ThreeVector &aPosition)
virtual const G4VNuclearDensity * GetNuclearDensity() const =0
virtual G4int GetMassNumber()=0
int G4int
Definition: G4Types.hh:78
static G4KaonMinus * KaonMinus()
Definition: G4KaonMinus.cc:113
G4double Z13(G4int Z) const
Definition: G4Pow.hh:127
double A(double temperature)
float proton_mass_c2
Definition: hepunit.py:275
G4KaonMinusField(G4V3DNucleus *nucleus, G4double coeff=0.35 *CLHEP::fermi)
float neutron_mass_c2
Definition: hepunit.py:276
const G4double radius
G4double GetPDGMass() const
G4double GetDensity(const G4ThreeVector &aPosition) const
static G4double GetBindingEnergy(const G4int A, const G4int Z)
G4V3DNucleus * theNucleus
static constexpr double MeV
Definition: G4SIunits.hh:214
static constexpr double pi
Definition: G4SIunits.hh:75
virtual ~G4KaonMinusField()
double G4double
Definition: G4Types.hh:76
G4double bindingEnergy(G4int A, G4int Z)
double mag() const