Geant4
10.02.p01
Main Page
Related Pages
Modules
Namespaces
Classes
Files
File List
File Members
G4Eta.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
//
27
// $Id: G4Eta.cc 79342 2014-02-24 11:42:42Z gcosmo $
28
//
29
//
30
// ----------------------------------------------------------------------
31
// GEANT 4 class implementation file
32
//
33
// History: first implementation, based on object model of
34
// 4th April 1996, G.Cosmo
35
// H.Kurashige 7 Jul 96
36
// **********************************************************************
37
// New impelemenataion as an utility class M.Asai, 26 July 2004
38
// ----------------------------------------------------------------------
39
// Update mass (PDG2006) Oct. 11 2006 H.Kurashige
40
//
41
42
#include "
G4Eta.hh
"
43
#include "
G4SystemOfUnits.hh
"
44
#include "
G4ParticleTable.hh
"
45
46
#include "
G4PhaseSpaceDecayChannel.hh
"
47
#include "
G4DecayTable.hh
"
48
49
// ######################################################################
50
// ### ETA ###
51
// ######################################################################
52
53
G4Eta
*
G4Eta::theInstance
= 0;
54
55
G4Eta
*
G4Eta::Definition
()
56
{
57
if
(
theInstance
!=0)
return
theInstance
;
58
const
G4String
name
=
"eta"
;
59
// search in particle table]
60
G4ParticleTable
* pTable =
G4ParticleTable::GetParticleTable
();
61
G4ParticleDefinition
* anInstance = pTable->
FindParticle
(name);
62
if
(anInstance ==0)
63
{
64
// create particle
65
//
66
// Arguments for constructor are as follows
67
// name mass width charge
68
// 2*spin parity C-conjugation
69
// 2*Isospin 2*Isospin3 G-parity
70
// type lepton number baryon number PDG encoding
71
// stable lifetime decay table
72
// shortlived subType anti_encoding
73
74
anInstance =
new
G4ParticleDefinition
(
75
name, 0.547862*
GeV
, 1.31*
keV
, 0.0,
76
0, -1, +1,
77
0, 0, +1,
78
"meson"
, 0, 0, 221,
79
false
, 0.0*
ns
, NULL,
80
false
,
"eta"
, 221);
81
//create Decay Table
82
G4DecayTable
* table =
new
G4DecayTable
();
83
84
// create decay channels
85
G4VDecayChannel
** mode =
new
G4VDecayChannel
*[4];
86
// eta -> gamma + gamma
87
mode[0] =
new
G4PhaseSpaceDecayChannel
(
"eta"
,0.3942,2,
"gamma"
,
"gamma"
);
88
// eta -> pi0 + pi0 + pi0
89
mode[1] =
new
G4PhaseSpaceDecayChannel
(
"eta"
,0.3256,3,
"pi0"
,
"pi0"
,
"pi0"
);
90
// eta -> pi0 + pi+ + pi-
91
mode[2] =
new
G4PhaseSpaceDecayChannel
(
"eta"
,0.226,3,
"pi0"
,
"pi+"
,
"pi-"
);
92
// eta -> gamma + pi+ + pi-
93
mode[3] =
new
G4PhaseSpaceDecayChannel
(
"eta"
,0.0468,3,
"gamma"
,
"pi+"
,
"pi-"
);
94
95
for
(
G4int
index=0; index <4; index++ ) table->
Insert
(mode[index]);
96
delete
[] mode;
97
98
anInstance->
SetDecayTable
(table);
99
}
100
theInstance
=
reinterpret_cast<
G4Eta
*
>
(anInstance);
101
return
theInstance
;
102
}
103
104
G4Eta
*
G4Eta::EtaDefinition
()
105
{
106
return
Definition
();
107
}
108
109
G4Eta
*
G4Eta::Eta
()
110
{
111
return
Definition
();
112
}
113
G4ParticleDefinition::SetDecayTable
void SetDecayTable(G4DecayTable *aDecayTable)
G4ParticleTable::FindParticle
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
Definition:
G4ParticleTable.cc:566
G4Eta.hh
name
G4String name
Definition:
TRTMaterials.hh:40
G4ParticleDefinition
Definition:
G4ParticleDefinition.hh:111
G4ParticleDefinition::G4ParticleDefinition
G4ParticleDefinition()
Definition:
G4ParticleDefinition.cc:203
G4int
int G4int
Definition:
G4Types.hh:78
G4Eta::Eta
static G4Eta * Eta()
Definition:
G4Eta.cc:109
G4VDecayChannel
Definition:
G4VDecayChannel.hh:105
G4DecayTable
Definition:
G4DecayTable.hh:50
G4ParticleTable.hh
G4Eta::Definition
static G4Eta * Definition()
Definition:
G4Eta.cc:55
G4ParticleTable
Definition:
G4ParticleTable.hh:65
G4Eta
Definition:
G4Eta.hh:50
GeV
static const double GeV
Definition:
G4SIunits.hh:214
G4PhaseSpaceDecayChannel.hh
G4DecayTable::Insert
void Insert(G4VDecayChannel *aChannel)
Definition:
G4DecayTable.cc:60
G4Eta::theInstance
static G4Eta * theInstance
Definition:
G4Eta.hh:53
G4ParticleTable::GetParticleTable
static G4ParticleTable * GetParticleTable()
Definition:
G4ParticleTable.cc:96
G4PhaseSpaceDecayChannel
Definition:
G4PhaseSpaceDecayChannel.hh:45
keV
static const double keV
Definition:
G4SIunits.hh:213
G4SystemOfUnits.hh
G4DecayTable.hh
ns
#define ns
Definition:
xmlparse.cc:614
G4Eta::EtaDefinition
static G4Eta * EtaDefinition()
Definition:
G4Eta.cc:104
G4String
Definition:
G4String.hh:45
geant4.10.02.p01
source
particles
hadrons
mesons
src
G4Eta.cc
Generated on Thu Mar 3 2016 14:41:23 for Geant4 by
1.8.8