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1 // 1
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25 //
26 //
27 // -------------------------------------------
28 // GEANT 4 class implementation file
29 //
30 // CERN, Geneva, Switzerland
31 //
32 // File name: G4PionZeroField.cc
33 //
34 // Author: Alessandro Brunengo (Al
35 //
36 // Creation date: 5 June 2000
37 // -------------------------------------------
38
39 #include "G4PionZeroField.hh"
40 #include "G4PhysicalConstants.hh"
41 #include "G4NucleiProperties.hh"
42 #include "G4VNuclearDensity.hh"
43 #include "G4FermiMomentum.hh"
44 #include "G4PionZero.hh"
45 #include "G4HadTmpUtil.hh"
46
47 G4PionZeroField::G4PionZeroField(G4V3DNucleus
48 : G4VNuclearField(nucleus)
49 {
50 theCoeff = coeff;
51 }
52
53
54 G4PionZeroField::~G4PionZeroField()
55 { }
56
57 G4double G4PionZeroField::GetField(const G4Thr
58 {
59 // Field is 0 out of the nucleus!
60 if(aPosition.mag() >= radius) return 0.0;
61
62 G4double pionZeroMass = G4PionZero::PionZero
63 G4int A = theNucleus->GetMassNumber();
64 G4int Z = theNucleus->GetCharge();
65
66 G4double bindingEnergy = G4NucleiProperties:
67 G4double nucleusMass = Z*proton_mass_c2+(A-Z
68 G4double reducedMass = pionZeroMass*nucleusM
69
70
71 G4double density = A*theNucleus->GetNuclearD
72 G4double nucleonMass = (proton_mass_c2+neutr
73
74 return 2.*pi*hbarc*hbarc/reducedMass*(1+pion
75 }
76
77 G4double G4PionZeroField::GetBarrier()
78 {
79 return 0;
80 }
81