source: trunk/source/processes/electromagnetic/highenergy/src/G4hhIonisation.cc@ 1316

Last change on this file since 1316 was 1315, checked in by garnier, 15 years ago

update geant4-09-04-beta-cand-01 interfaces-V09-03-09 vis-V09-03-08
File size: 5.3 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: G4hhIonisation.cc,v 1.10 2010/06/04 10:23:31 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-04-beta-cand-01 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class file
32//
33//
34// File name: G4hhIonisation
35//
36// Author: Vladimir Ivanchenko
37//
38// Creation date: 30.09.2005
39//
40// Modifications:
41// 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko)
42// 27-10-06 Add maxKinEnergy (V.Ivantchenko)
43//
44//
45// -------------------------------------------------------------------
46//
47//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
48//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
49
50#include "G4hhIonisation.hh"
51#include "G4BraggNoDeltaModel.hh"
52#include "G4BetheBlochNoDeltaModel.hh"
53#include "G4ICRU73NoDeltaModel.hh"
54#include "G4UniversalFluctuation.hh"
55#include "G4BohrFluctuations.hh"
56#include "G4UnitsTable.hh"
57#include "G4Electron.hh"
58
59//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
60
61G4hhIonisation::G4hhIonisation(const G4String& name)
62 : G4VEnergyLossProcess(name),
63 theParticle(0),
64 theBaseParticle(0),
65 isInitialised(false)
66{
67 SetStepFunction(0.1, 0.1*mm);
68 SetVerboseLevel(1);
69 SetProcessSubType(fIonisation);
70 mass = 0.0;
71 ratio = 0.0;
72}
73
74//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
75
76G4hhIonisation::~G4hhIonisation()
77{}
78
79//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80
81G4bool G4hhIonisation::IsApplicable(const G4ParticleDefinition& p)
82{
83 return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 100.0*MeV &&
84 !p.IsShortLived());
85}
86
87//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88
89G4double G4hhIonisation::MinPrimaryEnergy(const G4ParticleDefinition*,
90 const G4Material*,
91 G4double cut)
92{
93 G4double x = 0.5*cut/electron_mass_c2;
94 G4double y = electron_mass_c2/mass;
95 G4double g = x*y + std::sqrt((1. + x)*(1. + x*y*y));
96 return mass*(g - 1.0);
97}
98
99//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
100
101void G4hhIonisation::InitialiseEnergyLossProcess(const G4ParticleDefinition* part,
102 const G4ParticleDefinition* bpart)
103{
104 if(isInitialised) return;
105
106 theParticle = part;
107 if(bpart) G4cout << "G4hhIonisation::InitialiseEnergyLossProcess WARNING: no "
108 << "base particle should be defined for the process "
109 << GetProcessName() << G4endl;
110
111 SetBaseParticle(0);
112 SetSecondaryParticle(G4Electron::Electron());
113 //G4double q = theParticle->GetPDGCharge();
114 mass = theParticle->GetPDGMass();
115 ratio = electron_mass_c2/mass;
116 eth = 2.0*MeV*mass/proton_mass_c2;
117 flucModel = new G4BohrFluctuations();
118
119 G4int nm = 1;
120
121 minKinEnergy = MinKinEnergy();
122
123 if(eth > minKinEnergy) {
124 G4VEmModel* em;
125 em = new G4BraggNoDeltaModel();
126 //if(q > 0.0) { em = new G4BraggNoDeltaModel(); }
127 //else { em = new G4ICRU73NoDeltaModel(); }
128 em->SetLowEnergyLimit(minKinEnergy);
129 em->SetHighEnergyLimit(eth);
130 AddEmModel(nm, em, flucModel);
131 ++nm;
132 }
133
134 if(eth < MaxKinEnergy()) {
135 G4VEmModel* em1 = new G4BetheBlochNoDeltaModel();
136 em1->SetLowEnergyLimit(std::max(eth,minKinEnergy));
137 em1->SetHighEnergyLimit(MaxKinEnergy());
138 AddEmModel(nm, em1, flucModel);
139 }
140
141 if(verboseLevel>1) {
142 G4cout << "G4hhIonisation is initialised: Nmodels= " << nm << G4endl;
143 }
144 isInitialised = true;
145}
146
147//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
148
149void G4hhIonisation::PrintInfo()
150{
151 G4cout << " Delta-ray will not be produced; "
152 << G4endl;
153}
154
155//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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