Geant4 11.1.1
Toolkit for the simulation of the passage of particles through matter
Loading...
Searching...
No Matches
G4AntiHyperHe5.cc
Go to the documentation of this file.
1//
2// ********************************************************************
3// * License and Disclaimer *
4// * *
5// * The Geant4 software is copyright of the Copyright Holders of *
6// * the Geant4 Collaboration. It is provided under the terms and *
7// * conditions of the Geant4 Software License, included in the file *
8// * LICENSE and available at http://cern.ch/geant4/license . These *
9// * include a list of copyright holders. *
10// * *
11// * Neither the authors of this software system, nor their employing *
12// * institutes,nor the agencies providing financial support for this *
13// * work make any representation or warranty, express or implied, *
14// * regarding this software system or assume any liability for its *
15// * use. Please see the license in the file LICENSE and URL above *
16// * for the full disclaimer and the limitation of liability. *
17// * *
18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
20// * By using, copying, modifying or distributing the software (or *
21// * any work based on the software) you agree to acknowledge its *
22// * use in resulting scientific publications, and indicate your *
23// * acceptance of all terms of the Geant4 Software license. *
24// ********************************************************************
25//
26// Author: 2021 Alberto Ribon
27//
28//----------------------------------------------------------------------------
29
30#include "G4AntiHyperHe5.hh"
32#include "G4SystemOfUnits.hh"
33#include "G4ParticleTable.hh"
34
36#include "G4DecayTable.hh"
37
38// ##################################################################
39// ### ANTI HYPERHE5 ###
40// ##################################################################
41
42G4AntiHyperHe5* G4AntiHyperHe5::theInstance = nullptr;
43
44
46 if ( theInstance != nullptr ) return theInstance;
47 const G4String name = "anti_hyperHe5";
48 // search in particle table
50 G4Ions* anInstance = static_cast< G4Ions* >( pTable->FindParticle( name ) );
51 if ( anInstance == nullptr ) {
52 // create particle
53 //
54 // Arguments for constructor are as follows
55 // name mass width charge
56 // 2*spin parity C-conjugation
57 // 2*Isospin 2*Isospin3 G-parity
58 // type lepton number baryon number PDG encoding
59 // stable lifetime decay table
60 // shortlived subType anti_encoding
61 // excitation
62 anInstance = new G4Ions( name, 4840.00*MeV, 2.501e-12*MeV, -2.0*eplus,
63 3, +1, 0,
64 0, 0, 0,
65 "anti_nucleus", 0, -5, -1010020050,
66 false, 0.2631*ns, nullptr,
67 false, "static", 1010020050,
68 0.0, 0 );
69 // Magnetic Moment
70 G4double mN = eplus*hbar_Planck/2.0/(proton_mass_c2 /c_squared);
71 anInstance->SetPDGMagneticMoment( 2.97896248 * mN );
72
73 // create Decay Table
74 G4DecayTable* table = new G4DecayTable;
75 // create decay channels
76 /*
77 // The decays "mode[1]" and "mode[3]" produce the secondaries "anti_Li5" and "anti_He5",
78 // respectively, which are not existing in Geant4: we therefore skip them for the time being
79 // (similarly for hyperHe5, to keep the symmetry between particle and anti-particle).
80 const G4double half_br_lambda_to_p_pim = 0.5*0.639;
81 const G4double half_br_lambda_to_n_piz = 0.5*0.358;
82 G4VDecayChannel** mode = new G4VDecayChannel*[4];
83 // anti_lambda -> anti_proton + pi+ , with 50% probability of capturing the anti_proton
84 mode[0] = new G4PhaseSpaceDecayChannel( "anti_hyperHe5", half_br_lambda_to_p_pim, 3,
85 "anti_alpha", "anti_proton", "pi+" );
86 mode[1] = new G4PhaseSpaceDecayChannel( "anti_hyperHe5", half_br_lambda_to_p_pim, 2,
87 "anti_Li5", "pi+" );
88 // anti_lambda -> anti_neutron + pi0 , with 50% probability of capturing the anti_neutron
89 mode[2] = new G4PhaseSpaceDecayChannel( "anti_hyperHe5", half_br_lambda_to_n_piz, 3,
90 "anti_alpha", "anti_neutron", "pi0" );
91 mode[3] = new G4PhaseSpaceDecayChannel( "anti_hyperHe5", half_br_lambda_to_n_piz, 2,
92 "anti_He5", "pi0" );
93 for ( G4int index = 0; index < 4; ++index ) table->Insert( mode[index] );
94 */
95 // Replacement decay for the time being
96 const G4double br_lambda_to_p_pim = 0.639;
97 const G4double br_lambda_to_n_piz = 0.358;
98 G4VDecayChannel** mode = new G4VDecayChannel*[2];
99 // anti_lambda -> anti_proton + pi+ , with 0% probability of capturing the anti_proton
100 mode[0] = new G4PhaseSpaceDecayChannel( "anti_hyperHe5", br_lambda_to_p_pim, 3,
101 "anti_alpha", "anti_proton", "pi+" );
102 // anti_lambda -> anti_neutron + pi0 , with 0% probability of capturing the anti_neutron
103 mode[1] = new G4PhaseSpaceDecayChannel( "anti_hyperHe5", br_lambda_to_n_piz, 3,
104 "anti_alpha", "anti_neutron", "pi0" );
105 for ( G4int index = 0; index < 2; ++index ) table->Insert( mode[index] );
106 //---
107 delete [] mode;
108 anInstance->SetDecayTable( table );
109 }
110 theInstance = static_cast< G4AntiHyperHe5* >( anInstance );
111 return theInstance;
112}
113
114
116 return Definition();
117}
118
119
121 return Definition();
122}
double G4double
Definition: G4Types.hh:83
int G4int
Definition: G4Types.hh:85
static G4AntiHyperHe5 * AntiHyperHe5()
static G4AntiHyperHe5 * Definition()
static G4AntiHyperHe5 * AntiHyperHe5Definition()
void Insert(G4VDecayChannel *aChannel)
Definition: G4DecayTable.cc:53
Definition: G4Ions.hh:52
G4Ions()
Definition: G4Ions.cc:102
void SetPDGMagneticMoment(G4double mageticMoment)
void SetDecayTable(G4DecayTable *aDecayTable)
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
static G4ParticleTable * GetParticleTable()
#define ns(x)
Definition: xmltok.c:1649