| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
7 // * conditions of the Geant4 Software License
8 // * LICENSE and available at http://cern.ch/
9 // * include a list of copyright holders.
10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 // -------------------------------------------
27 // GEANT 4 class implementation file
28 //
29 // History: first implementation, based o
30 // 4th April 1996, G.Cosmo
31 // *******************************************
32 // New impelemenataion as an utility class M
33 // -------------------------------------------
34
35 #include "G4PionPlus.hh"
36
37 #include "G4DecayTable.hh"
38 #include "G4ParticleTable.hh"
39 #include "G4PhaseSpaceDecayChannel.hh"
40 #include "G4String.hh"
41 #include "G4SystemOfUnits.hh"
42 #include "G4VDecayChannel.hh"
43
44 G4PionPlus* G4PionPlus::theInstance = nullptr;
45
46 G4PionPlus* G4PionPlus::Definition()
47 {
48 if (theInstance != nullptr) return theInstan
49 const G4String name = "pi+";
50 // search in particle table]
51 G4ParticleTable* pTable = G4ParticleTable::G
52 G4ParticleDefinition* anInstance = pTable->F
53 if (anInstance == nullptr) {
54 // create particle
55 //
56 // Arguments for constructor are as fol
57 // name mass
58 // 2*spin parity C-
59 // 2*Isospin 2*Isospin3
60 // type lepton number ba
61 // stable lifetime
62 // shortlived subType
63
64 // clang-format off
65 anInstance = new G4ParticleDefinition(
66 name, 0.1395701*GeV, 2.528
67 0, -1,
68 2, +2,
69 "meson", 0,
70 false, 26.033*ns,
71 false, "pi");
72 // clang-format on
73
74 // create Decay Table
75 auto table = new G4DecayTable();
76
77 // create a decay channel
78 // pi+ -> mu+ + nu_mu
79 G4VDecayChannel* mode = new G4PhaseSpaceDe
80 table->Insert(mode);
81
82 anInstance->SetDecayTable(table);
83 }
84 theInstance = static_cast<G4PionPlus*>(anIns
85 return theInstance;
86 }
87
88 G4PionPlus* G4PionPlus::PionPlusDefinition()
89 {
90 return Definition();
91 }
92
93 G4PionPlus* G4PionPlus::PionPlus()
94 {
95 return Definition();
96 }
97