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1 // 1
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15 // * use. Please see the license in the file
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17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
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21 // * any work based on the software) you ag
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23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 // -------------------------------------------
28 // GEANT 4 class implementation file
29 //
30 // CERN, Geneva, Switzerland
31 //
32 // File name: G4PionMinusField.cc
33 //
34 // Author: Alessandro Brunengo (Al
35 //
36 // Creation date: 5 June 2000
37 // -------------------------------------------
38
39 #include "G4PionMinusField.hh"
40 #include "G4PhysicalConstants.hh"
41 #include "G4SystemOfUnits.hh"
42 #include "G4NucleiProperties.hh"
43 #include "G4VNuclearDensity.hh"
44 #include "G4FermiMomentum.hh"
45 #include "G4PionMinus.hh"
46 #include "G4HadTmpUtil.hh"
47 #include "G4Pow.hh"
48
49 G4PionMinusField::G4PionMinusField(G4V3DNucleu
50 : G4VNuclearField(nucleus)
51 {
52 theCoeff = coeff;
53 }
54
55
56 G4PionMinusField::~G4PionMinusField()
57 { }
58
59 G4double G4PionMinusField::GetField(const G4Th
60 {
61 // Field is 0 out of the nucleus!
62 if(aPosition.mag() >= radius) return 0.0;
63
64 G4int A = theNucleus->GetMassNumber();
65 G4int Z = theNucleus->GetCharge();
66 G4double pionMinusMass = G4PionMinus::PionMi
67 G4double bindingEnergy = G4NucleiProperties:
68 G4double nucleusMass = Z*proton_mass_c2+(A-Z
69 G4double reducedMass = pionMinusMass*nucleus
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
78 G4double G4PionMinusField::GetBarrier()
79 {
80 G4int A = theNucleus->GetMassNumber();
81 G4int Z = theNucleus->GetCharge();
82 G4double coulombBarrier = (1.44/1.14) * MeV
83 return -coulombBarrier;
84 }
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