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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
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7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
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10 // * 10 // * *
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13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // ------------------------------------------- 26 // ----------------------------------------------------------------------
27 // GEANT 4 class implementation file 27 // GEANT 4 class implementation file
28 // 28 //
29 // History: first implementation, based o 29 // History: first implementation, based on object model of
30 // 4th April 1996, G.Cosmo 30 // 4th April 1996, G.Cosmo
31 // ******************************************* 31 // **********************************************************************
32 // New impelemenataion as an utility class M 32 // New impelemenataion as an utility class M.Asai, 26 July 2004
33 // ------------------------------------------- 33 // ----------------------------------------------------------------------
34 34
35 #include "G4Electron.hh" 35 #include "G4Electron.hh"
36 36
37 #include "G4ParticleTable.hh" 37 #include "G4ParticleTable.hh"
38 #include "G4PhysicalConstants.hh" 38 #include "G4PhysicalConstants.hh"
39 #include "G4String.hh" 39 #include "G4String.hh"
40 #include "G4SystemOfUnits.hh" 40 #include "G4SystemOfUnits.hh"
41 #include "G4Types.hh" 41 #include "G4Types.hh"
42 42
43 G4Electron* G4Electron::theInstance = nullptr; 43 G4Electron* G4Electron::theInstance = nullptr;
44 44
45 G4Electron* G4Electron::Definition() 45 G4Electron* G4Electron::Definition()
46 { 46 {
47 if (theInstance != nullptr) return theInstan 47 if (theInstance != nullptr) return theInstance;
48 const G4String name = "e-"; 48 const G4String name = "e-";
49 // search in particle table] 49 // search in particle table]
50 G4ParticleTable* pTable = G4ParticleTable::G 50 G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
51 G4ParticleDefinition* anInstance = pTable->F 51 G4ParticleDefinition* anInstance = pTable->FindParticle(name);
52 if (anInstance == nullptr) { 52 if (anInstance == nullptr) {
53 // create particle 53 // create particle
54 // 54 //
55 // Arguments for constructor are as fol 55 // Arguments for constructor are as follows
56 // name mass 56 // name mass width charge
57 // 2*spin parity C- 57 // 2*spin parity C-conjugation
58 // 2*Isospin 2*Isospin3 58 // 2*Isospin 2*Isospin3 G-parity
59 // type lepton number ba 59 // type lepton number baryon number PDG encoding
60 // stable lifetime 60 // stable lifetime decay table
61 // shortlived subType 61 // shortlived subType anti_encoding
62 62
63 // use constants in CLHEP 63 // use constants in CLHEP
64 // static const double electron_mass_c2 = 64 // static const double electron_mass_c2 = 0.51099906 * MeV;
65 65
66 // clang-format off 66 // clang-format off
67 anInstance = new G4ParticleDefinition( 67 anInstance = new G4ParticleDefinition(
68 name, electron_mass_c2, 68 name, electron_mass_c2, 0.0*MeV, -1.*eplus,
69 1, 0, 0, 69 1, 0, 0,
70 0, 0, 0, 70 0, 0, 0,
71 "lepton", 1, 71 "lepton", 1, 0, 11,
72 true, -1.0, nullptr 72 true, -1.0, nullptr,
73 false, "e" 73 false, "e"
74 ); 74 );
75 // clang-format on 75 // clang-format on
76 76
77 // Bohr Magnetron 77 // Bohr Magnetron
78 G4double muB = -0.5 * eplus * hbar_Planck 78 G4double muB = -0.5 * eplus * hbar_Planck / (electron_mass_c2 / c_squared);
79 79
80 anInstance->SetPDGMagneticMoment(muB * 1.0 80 anInstance->SetPDGMagneticMoment(muB * 1.00115965218076);
81 } 81 }
82 theInstance = static_cast<G4Electron*>(anIns 82 theInstance = static_cast<G4Electron*>(anInstance);
83 return theInstance; 83 return theInstance;
84 } 84 }
85 85
86 G4Electron* G4Electron::ElectronDefinition() 86 G4Electron* G4Electron::ElectronDefinition()
87 { 87 {
88 return Definition(); 88 return Definition();
89 } 89 }
90 90
91 G4Electron* G4Electron::Electron() 91 G4Electron* G4Electron::Electron()
92 { 92 {
93 return Definition(); 93 return Definition();
94 } 94 }
95 95