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27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // GEANT 4 class implementation file 28 // GEANT 4 class implementation file
29 // 29 //
30 // CERN, Geneva, Switzerland 30 // CERN, Geneva, Switzerland
31 // 31 //
32 // File name: G4KaonPlusField.cc 32 // File name: G4KaonPlusField.cc
33 // 33 //
34 // Author: Alessandro Brunengo (Al 34 // Author: Alessandro Brunengo (Alessandro.Brunengo@ge.infn.it)
35 // 35 //
36 // Creation date: 5 June 2000 36 // Creation date: 5 June 2000
37 // ------------------------------------------- 37 // -------------------------------------------------------------------
38 38
39 #include "G4KaonPlusField.hh" 39 #include "G4KaonPlusField.hh"
40 #include "G4PhysicalConstants.hh" 40 #include "G4PhysicalConstants.hh"
41 #include "G4SystemOfUnits.hh" 41 #include "G4SystemOfUnits.hh"
42 #include "G4NucleiProperties.hh" 42 #include "G4NucleiProperties.hh"
43 #include "G4VNuclearDensity.hh" 43 #include "G4VNuclearDensity.hh"
44 #include "G4FermiMomentum.hh" 44 #include "G4FermiMomentum.hh"
45 #include "G4KaonPlus.hh" 45 #include "G4KaonPlus.hh"
46 #include "G4HadTmpUtil.hh" 46 #include "G4HadTmpUtil.hh"
47 #include "G4Pow.hh" <<
48 47
49 G4KaonPlusField::G4KaonPlusField(G4V3DNucleus 48 G4KaonPlusField::G4KaonPlusField(G4V3DNucleus * nucleus, G4double coeff)
50 : G4VNuclearField(nucleus) 49 : G4VNuclearField(nucleus)
51 { 50 {
52 theCoeff = coeff; 51 theCoeff = coeff;
53 } 52 }
54 53
55 54
56 G4KaonPlusField::~G4KaonPlusField() 55 G4KaonPlusField::~G4KaonPlusField()
57 { } 56 { }
58 57
59 G4double G4KaonPlusField::GetField(const G4Thr 58 G4double G4KaonPlusField::GetField(const G4ThreeVector & aPosition)
60 { 59 {
61 // Field is 0 out of the nucleus! 60 // Field is 0 out of the nucleus!
62 if(aPosition.mag() >= radius) return 0.0; 61 if(aPosition.mag() >= radius) return 0.0;
63 62
64 G4double kaonMass = G4KaonPlus::KaonPlus()-> 63 G4double kaonMass = G4KaonPlus::KaonPlus()->GetPDGMass();
65 64
66 G4int A = theNucleus->GetMassNumber(); 65 G4int A = theNucleus->GetMassNumber();
67 G4int Z = theNucleus->GetCharge(); 66 G4int Z = theNucleus->GetCharge();
68 G4double bindingEnergy = G4NucleiProperties: 67 G4double bindingEnergy = G4NucleiProperties::GetBindingEnergy(A, Z);
69 G4double nucleusMass = Z*proton_mass_c2+(A-Z 68 G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
70 G4double reducedMass = kaonMass*nucleusMass/ 69 G4double reducedMass = kaonMass*nucleusMass/(kaonMass+nucleusMass);
71 70
72 G4double density = theNucleus->GetNuclearDen 71 G4double density = theNucleus->GetNuclearDensity()->GetDensity(aPosition);
73 72
74 return -2.*pi*hbarc*hbarc/reducedMass*(2.0)* 73 return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*theCoeff*density+GetBarrier();
75 } 74 }
76 75
77 G4double G4KaonPlusField::GetBarrier() 76 G4double G4KaonPlusField::GetBarrier()
78 { 77 {
79 G4int A = theNucleus->GetMassNumber(); 78 G4int A = theNucleus->GetMassNumber();
80 G4int Z = theNucleus->GetCharge(); 79 G4int Z = theNucleus->GetCharge();
81 G4double coulombBarrier = (1.44/1.14) * MeV << 80 G4double coulombBarrier = (1.44/1.14) * MeV * Z / (1.0 + std::pow(A,1./3.));
82 return coulombBarrier; 81 return coulombBarrier;
83 } 82 }
84 83
85 84
86 85