Geant4_10
G4AntiNeutron.cc
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27 // $Id: G4AntiNeutron.cc 69557 2013-05-08 12:01:40Z gcosmo $
28 // GEANT4 tag $Name: geant4-09-04-ref-00 $
29 //
30 //
31 // ----------------------------------------------------------------------
32 // GEANT 4 class implementation file
33 //
34 // History: first implementation, based on object model of
35 // 4th April 1996, G.Cosmo
36 // H.Kurashige 7 July 1996
37 // **********************************************************************
38 // New impelemenataion as an utility class M.Asai, 26 July 2004
39 // ----------------------------------------------------------------------
40 
41 #include "G4AntiNeutron.hh"
42 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh"
44 #include "G4ParticleTable.hh"
45 
47 #include "G4DecayTable.hh"
48 
49 // ######################################################################
50 // ### ANTI NEUTRON ###
51 // ######################################################################
52 G4AntiNeutron* G4AntiNeutron::theInstance = 0;
53 
55 {
56  if (theInstance !=0) return theInstance;
57  const G4String name = "anti_neutron";
58  // search in particle table]
60  G4ParticleDefinition* anInstance = pTable->FindParticle(name);
61  if (anInstance ==0)
62  {
63  // create particle
64  //
65  // Arguments for constructor are as follows
66  // name mass width charge
67  // 2*spin parity C-conjugation
68  // 2*Isospin 2*Isospin3 G-parity
69  // type lepton number baryon number PDG encoding
70  // stable lifetime decay table
71  // shortlived subType anti_encoding
72  // use constants in CLHEP
73  // static const double neutron_mass_c2 = 939.56563 * MeV;
74 
75  anInstance = new G4ParticleDefinition(
76  name, neutron_mass_c2, 7.467e-28*GeV, 0.0,
77  1, +1, 0,
78  1, +1, 0,
79  "baryon", 0, -1, -2112,
80  true, 885.7*second, NULL,
81  false, "nucleon", 2112
82  );
83  // Magnetic Moment
85  anInstance->SetPDGMagneticMoment( 1.9130427 * mN);
86  //create Decay Table
87  G4DecayTable* table = new G4DecayTable();
88  // create a decay channel
89  G4VDecayChannel* mode = new G4NeutronBetaDecayChannel("anti_neutron",1.00);
90  table->Insert(mode);
91  anInstance->SetDecayTable(table);
92 
93  }
94  theInstance = reinterpret_cast<G4AntiNeutron*>(anInstance);
95  return theInstance;
96 }
97 
99 {
100  return Definition();
101 }
102 
104 {
105  return Definition();
106 }
107 
108 
void SetDecayTable(G4DecayTable *aDecayTable)
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
const XML_Char * name
Definition: expat.h:151
static G4AntiNeutron * AntiNeutronDefinition()
float proton_mass_c2
Definition: hepunit.py:275
float neutron_mass_c2
Definition: hepunit.py:276
void Insert(G4VDecayChannel *aChannel)
Definition: G4DecayTable.cc:60
static G4ParticleTable * GetParticleTable()
double G4double
Definition: G4Types.hh:76
static G4AntiNeutron * Definition()
static G4AntiNeutron * AntiNeutron()
void SetPDGMagneticMoment(G4double mageticMoment)