source: trunk/source/processes/electromagnetic/lowenergy/src/G4FinalStateChargeIncrease.cc@ 1014

Last change on this file since 1014 was 1007, checked in by garnier, 17 years ago

update to geant4.9.2
  • Property svn:executable set to *
File size: 5.7 KB
Line 
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// $Id: G4FinalStateChargeIncrease.cc,v 1.3 2008/07/14 20:47:34 sincerti Exp $
27// GEANT4 tag $Name: geant4-09-02 $
28
29#include "G4FinalStateChargeIncrease.hh"
30
31//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33G4FinalStateChargeIncrease::G4FinalStateChargeIncrease()
34{
35 lowEnergyLimit = 1 * keV;
36 highEnergyLimit = 10 * MeV;
37}
38
39//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
40
41G4FinalStateChargeIncrease::~G4FinalStateChargeIncrease()
42{}
43
44//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45
46const G4FinalStateProduct& G4FinalStateChargeIncrease::GenerateFinalState(const G4Track& track, const G4Step& /* step */)
47{
48 product.Clear();
49
50 product.KillPrimaryParticle();
51 product.AddEnergyDeposit(0.);
52 G4ParticleDefinition* definition = track.GetDefinition();
53
54 G4double inK = track.GetDynamicParticle()->GetKineticEnergy();
55
56 G4int finalStateIndex = cross.RandomSelect(inK,definition);
57
58 G4int n = NumberOfFinalStates(track.GetDefinition(),finalStateIndex);
59 G4double outK = inK - IncomingParticleBindingEnergyConstant(definition,finalStateIndex);
60
61 G4DNAGenericIonsManager* instance;
62 instance = G4DNAGenericIonsManager::Instance();
63
64 G4double electronK;
65 if (definition == instance->GetIon("hydrogen")) electronK = inK*electron_mass_c2/proton_mass_c2;
66 else electronK = inK*electron_mass_c2/(3728*MeV);
67
68 if (outK<0)
69 {
70 G4String message;
71 message="G4FinalStateChargeIncrease - Final kinetic energy is below 0! Process ";
72 }
73
74 product.AddSecondary(new G4DynamicParticle(OutgoingParticleDefinition(definition,finalStateIndex),
75 track.GetDynamicParticle()->GetMomentumDirection(),
76 outK));
77
78 n = n - 1;
79
80 while (n>0)
81 {
82 n--;
83 product.AddSecondary
84 (new G4DynamicParticle(G4Electron::Electron(), track.GetDynamicParticle()->GetMomentumDirection(), electronK));
85 }
86
87 return product;
88}
89
90//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91
92G4int G4FinalStateChargeIncrease::NumberOfFinalStates(G4ParticleDefinition* particleDefinition,
93 G4int finalStateIndex )
94
95{
96 G4DNAGenericIonsManager* instance;
97 instance = G4DNAGenericIonsManager::Instance();
98 if (particleDefinition == instance->GetIon("hydrogen")) return 2;
99 if (particleDefinition == instance->GetIon("alpha+")) return 2;
100
101 if (particleDefinition == instance->GetIon("helium"))
102 { if (finalStateIndex==0) return 2;
103 return 3;
104 }
105 return 0;
106}
107
108//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
109
110G4ParticleDefinition* G4FinalStateChargeIncrease::OutgoingParticleDefinition (G4ParticleDefinition* particleDefinition,
111 G4int finalStateIndex)
112{
113 G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance());
114 if (particleDefinition == instance->GetIon("hydrogen")) return G4Proton::Proton();
115 if (particleDefinition == instance->GetIon("alpha+")) return instance->GetIon("alpha++");
116
117 if (particleDefinition == instance->GetIon("alpha+")) return instance->GetIon("helium");
118 {
119 if (finalStateIndex==0) return instance->GetIon("alpha+");
120 return instance->GetIon("alpha++");
121 }
122 return 0;
123}
124
125//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
126
127G4double G4FinalStateChargeIncrease::IncomingParticleBindingEnergyConstant(G4ParticleDefinition* particleDefinition,
128 G4int finalStateIndex )
129{
130 G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance());
131 if(particleDefinition == instance->GetIon("hydrogen")) return 13.6*eV;
132
133 if(particleDefinition == instance->GetIon("alpha+"))
134 {
135 // Binding energy for He+ -> He++ + e- 54.509 eV
136 // Binding energy for He -> He+ + e- 24.587 eV
137 return 54.509*eV;
138 }
139
140 if(particleDefinition == instance->GetIon("helium"))
141 {
142 // Binding energy for He+ -> He++ + e- 54.509 eV
143 // Binding energy for He -> He+ + e- 24.587 eV
144
145 if (finalStateIndex==0) return 24.587*eV;
146 return (54.509 + 24.587)*eV;
147 }
148
149 return 0;
150}
Note: See TracBrowser for help on using the repository browser.