Gabriele Cosmo
166 lines
5.9 KiB
C++
166 lines
5.9 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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// $Id: G4hIonisation.hh,v 1.32 2005/05/12 11:06:43 vnivanch Exp $
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// GEANT4 tag $Name: geant4-08-00 $
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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: G4hIonisation
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//
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// Author: Laszlo Urban
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//
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// Creation date: 30.05.1997
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//
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// Modifications:
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//
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// corrected by L.Urban on 24/09/97
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// corrected by L.Urban on 13/01/98
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// bugs fixed by L.Urban on 02/02/99
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// 10/02/00 modifications , new e.m. structure, L.Urban
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// 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
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// 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma)
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// 19-09-01 come back to previous process name "hIoni"
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// 29-10-01 all static functions no more inlined
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// 07-01-02 new design of em processes (V.Ivanchenko)
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// 26-12-02 secondary production moved to derived classes (VI)
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// 24-01-03 Make models region aware (V.Ivanchenko)
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// 05-02-03 Fix compilation warnings (V.Ivanchenko)
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// 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
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// 15-02-03 Add control on delta pointer (V.Ivanchenko)
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// 23-05-03 Add fluctuation model as a member function (V.Ivanchenko)
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// 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko)
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// 16-06-03 ShortLived are not applicable any more (V.Ivanchenko)
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// 08-08-03 STD substitute standard (V.Ivanchenko)
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// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
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// 21-01-04 Migrade to G4ParticleChangeForLoss (V.Ivanchenko)
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// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
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// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
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// 11-04-04 Move MaxSecondaryEnergy to models (V.Ivanchenko)
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//
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// Class Description:
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//
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// This class manages the ionisation process for hadrons.
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// it inherites from G4VContinuousDiscreteProcess via G4VEnergyLoss.
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//
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// -------------------------------------------------------------------
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//
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#ifndef G4hIonisation_h
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#define G4hIonisation_h 1
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#include "G4VEnergyLossProcess.hh"
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#include "G4Electron.hh"
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#include "G4Positron.hh"
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#include "globals.hh"
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#include "G4VEmModel.hh"
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class G4Material;
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class G4VEmFluctuationModel;
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class G4hIonisation : public G4VEnergyLossProcess
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{
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public:
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G4hIonisation(const G4String& name = "hIoni");
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virtual ~G4hIonisation();
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G4bool IsApplicable(const G4ParticleDefinition& p);
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G4double MinPrimaryEnergy(const G4ParticleDefinition* p,
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const G4Material*, G4double cut);
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// Print out of the class parameters
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virtual void PrintInfo();
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protected:
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std::vector<G4DynamicParticle*>* SecondariesPostStep(
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G4VEmModel*,
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double&);
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virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition*,
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const G4ParticleDefinition*);
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private:
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// hide assignment operator
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G4hIonisation & operator=(const G4hIonisation &right);
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G4hIonisation(const G4hIonisation&);
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G4double mass;
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G4double ratio;
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const G4ParticleDefinition* theParticle;
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const G4ParticleDefinition* theBaseParticle;
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G4VEmFluctuationModel* flucModel;
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G4bool isInitialised;
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G4double eth;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4bool G4hIonisation::IsApplicable(const G4ParticleDefinition& p)
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{
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return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV &&
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!p.IsShortLived());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4hIonisation::MinPrimaryEnergy(const G4ParticleDefinition*,
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const G4Material*,
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G4double cut)
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{
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G4double x = 0.5*cut/electron_mass_c2;
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G4double y = electron_mass_c2/mass;
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G4double g = x*y + std::sqrt((1. + x)*(1. + x*y*y));
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return mass*(g - 1.0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline std::vector<G4DynamicParticle*>* G4hIonisation::SecondariesPostStep(
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G4VEmModel* model,
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const G4MaterialCutsCouple* couple,
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const G4DynamicParticle* dp,
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G4double& tcut)
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{
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return model->SampleSecondaries(couple, dp, tcut);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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