| [1197] | 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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| 26 | // $Id: G4NuclearStopping.cc,v 1.2 2009/11/10 19:25:47 vnivanch Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $
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| 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 | // File name: G4NuclearStopping
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| 34 | //
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| 35 | // Author: Vladimir Ivanchenko
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| 36 | //
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| 37 | // Creation date: 20 July 2009
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| 38 | //
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| 39 | // Modified:
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| 40 | //
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| 41 | // -----------------------------------------------------------------------------
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| 42 | //
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| 43 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 44 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 45 |
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| 46 | #include "G4NuclearStopping.hh"
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| 47 | #include "G4ICRU49NuclearStoppingModel.hh"
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| 48 |
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| 49 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 50 |
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| 51 | using namespace std;
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| 52 |
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| 53 | G4NuclearStopping::G4NuclearStopping(const G4String& processName)
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| 54 | : G4VEmProcess(processName)
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| 55 | {
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| 56 | isInitialized = false;
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| 57 | SetProcessSubType(fCoulombScattering);
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| 58 | enableAlongStepDoIt = true;
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| 59 | modelICRU49 = 0;
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| 60 | }
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| 61 |
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| 62 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 63 |
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| 64 | G4NuclearStopping::~G4NuclearStopping()
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| 65 | {
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| 66 | delete modelICRU49;
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| 67 | }
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| 68 |
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| 69 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 70 |
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| 71 | G4bool G4NuclearStopping::IsApplicable (const G4ParticleDefinition& p)
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| 72 | {
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| 73 | return (p.GetPDGCharge() != 0.0 && !p.IsShortLived());
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| 74 | }
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| 75 |
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| 76 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 77 |
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| 78 | void G4NuclearStopping::InitialiseProcess(const G4ParticleDefinition*)
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| 79 | {
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| 80 | if(!isInitialized) {
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| 81 | isInitialized = true;
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| 82 | SetBuildTableFlag(false);
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| 83 | // SetSecondaryParticle(G4Electron::Electron());
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| 84 | if(!Model()) {
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| 85 | modelICRU49 = new G4ICRU49NuclearStoppingModel();
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| 86 | SetModel(modelICRU49);
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| 87 | }
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| 88 | AddEmModel(1, Model());
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| 89 | Model()->SetParticleChange(&nParticleChange);
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| 90 | }
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| 91 | }
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| 92 |
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| 93 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 94 |
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| 95 | G4double
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| 96 | G4NuclearStopping::AlongStepGetPhysicalInteractionLength(
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| 97 | const G4Track&, G4double, G4double, G4double&, G4GPILSelection* selection)
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| 98 | {
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| 99 | *selection = NotCandidateForSelection;
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| 100 | return DBL_MAX;
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| 101 | }
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| 102 |
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| 103 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 104 |
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| 105 | G4VParticleChange* G4NuclearStopping::AlongStepDoIt(const G4Track& track,
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| 106 | const G4Step& step)
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| 107 | {
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| 108 | nParticleChange.InitializeForAlongStep(track);
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| 109 | G4double length = step.GetStepLength();
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| 110 | if(length > 0.0) {
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| 111 |
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| 112 | G4double T1 = step.GetPreStepPoint()->GetKineticEnergy();
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| 113 | G4double T2 = step.GetPostStepPoint()->GetKineticEnergy();
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| 114 | if(T2 > 0.0) {
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| 115 |
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| 116 | // primary
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| 117 | G4double T = 0.5*(T1 + T2);
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| 118 | const G4ParticleDefinition* part = track.GetDefinition();
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| 119 | const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple();
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| 120 | G4VEmModel* mod = SelectModel(T, couple->GetIndex());
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| 121 |
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| 122 | // sample stopping
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| 123 | if(modelICRU49) modelICRU49->SetFluctuationFlag(true);
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| 124 | G4double nloss =
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| 125 | length*mod->ComputeDEDXPerVolume(couple->GetMaterial(), part, T);
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| 126 | if(nloss > T1) nloss = T1;
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| 127 | nParticleChange.SetProposedKineticEnergy(T1 - nloss);
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| 128 | nParticleChange.ProposeLocalEnergyDeposit(nloss);
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| 129 | nParticleChange.ProposeNonIonizingEnergyDeposit(nloss);
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| 130 | if(modelICRU49) modelICRU49->SetFluctuationFlag(false);
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| 131 | }
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| 132 | }
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| 133 | return &nParticleChange;
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| 134 | }
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| 135 |
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| 136 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 137 |
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| 138 | void G4NuclearStopping::PrintInfo()
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| 139 | {}
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| 140 |
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| 141 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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| 142 |
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