[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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[1340] | 26 | // $Id: G4hhIonisation.cc,v 1.11 2010/10/26 14:15:40 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: emhighenergy-V09-03-02 $ |
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[819] | 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4hhIonisation |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko |
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| 37 | // |
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| 38 | // Creation date: 30.09.2005 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko) |
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| 42 | // 27-10-06 Add maxKinEnergy (V.Ivantchenko) |
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| 43 | // |
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| 44 | // |
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| 45 | // ------------------------------------------------------------------- |
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| 46 | // |
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| 47 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 48 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 49 | |
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| 50 | #include "G4hhIonisation.hh" |
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| 51 | #include "G4BraggNoDeltaModel.hh" |
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| 52 | #include "G4BetheBlochNoDeltaModel.hh" |
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[1315] | 53 | #include "G4ICRU73NoDeltaModel.hh" |
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[819] | 54 | #include "G4UniversalFluctuation.hh" |
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| 55 | #include "G4BohrFluctuations.hh" |
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| 56 | #include "G4UnitsTable.hh" |
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| 57 | #include "G4Electron.hh" |
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| 58 | |
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| 59 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 60 | |
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| 61 | G4hhIonisation::G4hhIonisation(const G4String& name) |
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| 62 | : G4VEnergyLossProcess(name), |
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| 63 | theParticle(0), |
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| 64 | theBaseParticle(0), |
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| 65 | isInitialised(false) |
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| 66 | { |
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| 67 | SetStepFunction(0.1, 0.1*mm); |
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| 68 | SetVerboseLevel(1); |
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[961] | 69 | SetProcessSubType(fIonisation); |
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[819] | 70 | mass = 0.0; |
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| 71 | ratio = 0.0; |
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| 72 | } |
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| 73 | |
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| 74 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 75 | |
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| 76 | G4hhIonisation::~G4hhIonisation() |
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| 77 | {} |
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| 78 | |
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| 79 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 80 | |
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[1055] | 81 | G4bool G4hhIonisation::IsApplicable(const G4ParticleDefinition& p) |
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| 82 | { |
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| 83 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 100.0*MeV && |
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| 84 | !p.IsShortLived()); |
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| 85 | } |
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| 86 | |
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| 87 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 88 | |
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| 89 | G4double G4hhIonisation::MinPrimaryEnergy(const G4ParticleDefinition*, |
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| 90 | const G4Material*, |
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| 91 | G4double cut) |
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| 92 | { |
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| 93 | G4double x = 0.5*cut/electron_mass_c2; |
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| 94 | G4double y = electron_mass_c2/mass; |
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| 95 | G4double g = x*y + std::sqrt((1. + x)*(1. + x*y*y)); |
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| 96 | return mass*(g - 1.0); |
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| 97 | } |
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| 98 | |
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| 99 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 100 | |
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[819] | 101 | void G4hhIonisation::InitialiseEnergyLossProcess(const G4ParticleDefinition* part, |
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| 102 | const G4ParticleDefinition* bpart) |
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| 103 | { |
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[1340] | 104 | if(isInitialised) { return; } |
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[819] | 105 | |
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| 106 | theParticle = part; |
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[1340] | 107 | if(bpart) { |
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| 108 | G4cout << "G4hhIonisation::InitialiseEnergyLossProcess WARNING: no " |
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| 109 | << "base particle should be defined for the process " |
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| 110 | << GetProcessName() << G4endl; |
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| 111 | } |
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[819] | 112 | SetBaseParticle(0); |
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| 113 | SetSecondaryParticle(G4Electron::Electron()); |
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[1315] | 114 | //G4double q = theParticle->GetPDGCharge(); |
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[819] | 115 | mass = theParticle->GetPDGMass(); |
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| 116 | ratio = electron_mass_c2/mass; |
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[1340] | 117 | G4double eth = 2*MeV*mass/proton_mass_c2; |
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[819] | 118 | flucModel = new G4BohrFluctuations(); |
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| 119 | |
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| 120 | G4int nm = 1; |
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| 121 | |
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[1340] | 122 | G4double minKinEnergy = MinKinEnergy(); |
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[961] | 123 | |
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[819] | 124 | if(eth > minKinEnergy) { |
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[1315] | 125 | G4VEmModel* em; |
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| 126 | em = new G4BraggNoDeltaModel(); |
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| 127 | //if(q > 0.0) { em = new G4BraggNoDeltaModel(); } |
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| 128 | //else { em = new G4ICRU73NoDeltaModel(); } |
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[819] | 129 | em->SetLowEnergyLimit(minKinEnergy); |
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| 130 | em->SetHighEnergyLimit(eth); |
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| 131 | AddEmModel(nm, em, flucModel); |
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[1315] | 132 | ++nm; |
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[819] | 133 | } |
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| 134 | |
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[961] | 135 | if(eth < MaxKinEnergy()) { |
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[819] | 136 | G4VEmModel* em1 = new G4BetheBlochNoDeltaModel(); |
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| 137 | em1->SetLowEnergyLimit(std::max(eth,minKinEnergy)); |
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[961] | 138 | em1->SetHighEnergyLimit(MaxKinEnergy()); |
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[819] | 139 | AddEmModel(nm, em1, flucModel); |
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| 140 | } |
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| 141 | |
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[961] | 142 | if(verboseLevel>1) { |
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[819] | 143 | G4cout << "G4hhIonisation is initialised: Nmodels= " << nm << G4endl; |
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[961] | 144 | } |
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[819] | 145 | isInitialised = true; |
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| 146 | } |
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| 147 | |
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| 148 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 149 | |
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| 150 | void G4hhIonisation::PrintInfo() |
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| 151 | { |
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| 152 | G4cout << " Delta-ray will not be produced; " |
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| 153 | << G4endl; |
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| 154 | } |
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| 155 | |
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| 156 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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