Gabriele Cosmo
166 lines
5.6 KiB
C++
166 lines
5.6 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4LowEnergyBraggModel.hh,v 1.6 2006/06/29 19:35:53 gunter Exp $
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// GEANT4 tag $Name: geant4-08-01 $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4LowEnergyBraggModel
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 17.04.2004
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//
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// Modifications:
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//
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//
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// Class Description:
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//
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// Implementation of energy loss and delta-electron production
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// by heavy slow charged particles using eveluated data
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// -------------------------------------------------------------------
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//
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#ifndef G4LowEnergyBraggModel_h
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#define G4LowEnergyBraggModel_h 1
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#include "G4VEmModel.hh"
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class G4hParametrisedLossModel;
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class G4LowEnergyBraggModel : public G4VEmModel
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{
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public:
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G4LowEnergyBraggModel(const G4ParticleDefinition* p = 0, const G4String& nam = "LEBragg");
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~G4LowEnergyBraggModel();
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void Initialise(const G4ParticleDefinition*, const G4DataVector&);
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G4double HighEnergyLimit(const G4ParticleDefinition*);
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G4double LowEnergyLimit(const G4ParticleDefinition*);
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void SetHighEnergyLimit(G4double e) {highKinEnergy = e;};
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void SetLowEnergyLimit(G4double e) {lowKinEnergy = e;};
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G4double MinEnergyCut(const G4ParticleDefinition*,
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const G4MaterialCutsCouple*);
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G4bool IsInCharge(const G4ParticleDefinition*);
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G4double ComputeDEDX(const G4MaterialCutsCouple*,
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double cutEnergy);
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G4double CrossSection(const G4MaterialCutsCouple*,
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const G4ParticleDefinition*,
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G4double kineticEnergy,
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G4double cutEnergy,
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G4double maxEnergy);
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G4DynamicParticle* SampleSecondary(
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double tmin,
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G4double maxEnergy);
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std::vector<G4DynamicParticle*>* SampleSecondaries(
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double tmin,
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G4double maxEnergy);
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G4double MaxSecondaryEnergy(const G4DynamicParticle*);
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void SetParameterization(G4hParametrisedLossModel* p);
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protected:
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G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
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G4double kinEnergy);
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private:
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void SetParticle(const G4ParticleDefinition* p);
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// hide assignment operator
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G4LowEnergyBraggModel & operator=(const G4LowEnergyBraggModel &right);
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G4LowEnergyBraggModel(const G4LowEnergyBraggModel&);
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const G4ParticleDefinition* particle;
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G4hParametrisedLossModel* parameterization;
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G4double mass;
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G4double spin;
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G4double chargeSquare;
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G4double massRate;
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G4double ratio;
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G4double highKinEnergy;
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G4double lowKinEnergy;
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G4double lowestKinEnergy;
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G4bool isIon;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4LowEnergyBraggModel::MaxSecondaryEnergy(
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const G4ParticleDefinition* pd,
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G4double kinEnergy)
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{
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if(isIon) SetParticle(pd);
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G4double tau = kinEnergy/mass;
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G4double tmax = 2.0*electron_mass_c2*tau*(tau + 2.) /
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(1. + 2.0*(tau + 1.)*ratio + ratio*ratio);
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return tmax;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4LowEnergyBraggModel::MaxSecondaryEnergy(const G4DynamicParticle* dp)
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{
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if(isIon) {
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mass = dp->GetMass();
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ratio = electron_mass_c2/mass;
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}
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G4double tau = dp->GetKineticEnergy()/mass;
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G4double tmax = 2.0*electron_mass_c2*tau*(tau + 2.) /
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(1. + 2.0*(tau + 1.)*ratio + ratio*ratio);
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return tmax;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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