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G4AdjointPositron.cc
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29 // ------------------------------------------------------------
30 // GEANT 4 class header file
31 //
32 // History:
33 // 1st March 2007 creation by L. Desorgher based on a modification of G4Positron
34 // 06 Nov. 2008 modified for Geant4-09-02 by Hisaya Kurashige
35 //
36 //-------------------------------------------------------------
37 //
38 
39 #include "G4AdjointPositron.hh"
40 #include "G4ParticleTable.hh"
41 #include "G4PhysicalConstants.hh"
42 #include "G4SystemOfUnits.hh"
43 
44 // ######################################################################
45 // ### ADJOINT ELECTRON ###
46 // ######################################################################
48 
50 {
51 
52  if (theInstance !=0) return theInstance;
53  const G4String name = "adj_e+";
54  // search in particle table]
56  G4ParticleDefinition* anInstance = pTable->FindParticle(name);
57  if (anInstance ==0)
58  {
59 
60  // create particle
61  //
62  // Arguments for constructor are as follows
63  // name mass width charge
64  // 2*spin parity C-conjugation
65  // 2*Isospin 2*Isospin3 G-parity
66  // type lepton number baryon number PDG encoding
67  // stable lifetime decay table
68  // shortlived subType anti_encoding
69 
70  // use constants in CLHEP
71  // static const double electron_mass_c2 = 0.51099906 * MeV;
72 
73  // NOTE : electric charge and magnetic moment is opposite
74  // compared with real positron, because adjoint particles
75  // are used to back-trace
76  anInstance = new G4ParticleDefinition(
77  name, electron_mass_c2, 0.0*MeV, -1.*eplus,
78  1, 0, 0,
79  0, 0, 0,
80  "adjoint", -1, 0, -10000011,
81  true, -1.0, NULL,
82  false, "adj_lepton"
83  );
84  // Bohr Magnetron
86  anInstance->SetPDGMagneticMoment( muB * 2.* 1.0011596521859 );
87 
88  }
89  theInstance = reinterpret_cast<G4AdjointPositron*>(anInstance);
90  return theInstance;
91 }
92 
94 {
95  return Definition();
96 }
97 
99 {
100  return Definition();
101 }
102 
103