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27 // ------------------------------------------- 24 // -------------------------------------------------------------------
28 // GEANT 4 class implementation file 25 // GEANT 4 class implementation file
29 // 26 //
30 // CERN, Geneva, Switzerland 27 // CERN, Geneva, Switzerland
31 // 28 //
32 // File name: G4SigmaZeroField.cc 29 // File name: G4SigmaZeroField.cc
33 // 30 //
34 // Author: Alessandro Brunengo (Al 31 // Author: Alessandro Brunengo (Alessandro.Brunengo@ge.infn.it)
35 // 32 //
36 // Creation date: 5 June 2000 33 // Creation date: 5 June 2000
37 // ------------------------------------------- 34 // -------------------------------------------------------------------
38 <<
39 #include "G4SigmaZeroField.hh" 35 #include "G4SigmaZeroField.hh"
40 #include "G4PhysicalConstants.hh" << 36 #include "G4NucleiPropertiesTable.hh"
41 #include "G4NucleiProperties.hh" <<
42 #include "G4VNuclearDensity.hh" 37 #include "G4VNuclearDensity.hh"
43 #include "G4FermiMomentum.hh" 38 #include "G4FermiMomentum.hh"
44 #include "G4SigmaZero.hh" 39 #include "G4SigmaZero.hh"
45 #include "G4HadTmpUtil.hh" 40 #include "G4HadTmpUtil.hh"
46 41
47 G4SigmaZeroField::G4SigmaZeroField(G4V3DNucleu 42 G4SigmaZeroField::G4SigmaZeroField(G4V3DNucleus * nucleus, G4double coeff)
48 : G4VNuclearField(nucleus) 43 : G4VNuclearField(nucleus)
49 { 44 {
50 theCoeff = coeff; 45 theCoeff = coeff;
51 } 46 }
52 47
>> 48
53 G4SigmaZeroField::~G4SigmaZeroField() 49 G4SigmaZeroField::~G4SigmaZeroField()
54 { } 50 { }
55 51
>> 52
>> 53 const G4SigmaZeroField & G4SigmaZeroField::operator=(const G4SigmaZeroField &)
>> 54 {
>> 55 throw G4HadronicException(__FILE__, __LINE__, "G4SigmaZeroField::operator= meant not to be accessible");
>> 56 return *this;
>> 57 }
>> 58
>> 59
>> 60 G4int G4SigmaZeroField::operator==(const G4SigmaZeroField &) const
>> 61 {
>> 62 throw G4HadronicException(__FILE__, __LINE__, "G4SigmaZeroField::operator== meant not to be accessible");
>> 63 return 0;
>> 64 }
>> 65
>> 66
>> 67 G4int G4SigmaZeroField::operator!=(const G4SigmaZeroField &) const
>> 68 {
>> 69 throw G4HadronicException(__FILE__, __LINE__, "G4SigmaZeroField::operator!= meant not to be accessible");
>> 70 return 1;
>> 71 }
>> 72
>> 73
>> 74
56 G4double G4SigmaZeroField::GetField(const G4Th 75 G4double G4SigmaZeroField::GetField(const G4ThreeVector & aPosition)
57 { 76 {
58 // Field is 0 out of the nucleus! 77 // Field is 0 out of the nucleus!
59 if(aPosition.mag() >= radius) return 0.0; 78 if(aPosition.mag() >= radius) return 0.0;
60 79
61 G4double sigmaZeroMass = G4SigmaZero::SigmaZ 80 G4double sigmaZeroMass = G4SigmaZero::SigmaZero()->GetPDGMass();
62 81
63 G4int A = theNucleus->GetMassNumber(); << 82 G4double A = theNucleus->GetMassNumber();
64 G4int Z = theNucleus->GetCharge(); << 83 G4double Z = theNucleus->GetCharge();
65 G4double bindingEnergy = G4NucleiProperties: << 84 G4double bindingEnergy = G4NucleiPropertiesTable::GetBindingEnergy(G4lrint(Z), G4lrint(A));
66 G4double nucleusMass = Z*proton_mass_c2+(A-Z 85 G4double nucleusMass = Z*proton_mass_c2+(A-Z)*neutron_mass_c2+bindingEnergy;
67 G4double reducedMass = sigmaZeroMass*nucleus 86 G4double reducedMass = sigmaZeroMass*nucleusMass/(sigmaZeroMass+nucleusMass);
68 87
69 const G4VNuclearDensity * nuclearDensity=the 88 const G4VNuclearDensity * nuclearDensity=theNucleus->GetNuclearDensity();
70 G4double density = nuclearDensity->GetDensit 89 G4double density = nuclearDensity->GetDensity(aPosition);
71 90
72 return -2.*pi*hbarc*hbarc/reducedMass*(2.0)* 91 return -2.*pi*hbarc*hbarc/reducedMass*(2.0)*theCoeff*density;
73 } 92 }
74 93
75 94
76 G4double G4SigmaZeroField::GetBarrier() 95 G4double G4SigmaZeroField::GetBarrier()
77 { 96 {
78 return 0.; 97 return 0.;
79 } 98 }
80 99
81 100