Gabriele Cosmo
173 lines
6.1 KiB
C++
173 lines
6.1 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
// $Id: G4hIonisation.hh,v 1.37 2007/05/23 08:47:34 vnivanch Exp $
|
|
// GEANT4 tag $Name: geant4-09-01 $
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// GEANT4 Class header file
|
|
//
|
|
//
|
|
// File name: G4hIonisation
|
|
//
|
|
// Author: Laszlo Urban
|
|
//
|
|
// Creation date: 30.05.1997
|
|
//
|
|
// Modifications:
|
|
//
|
|
// corrected by L.Urban on 24/09/97
|
|
// corrected by L.Urban on 13/01/98
|
|
// bugs fixed by L.Urban on 02/02/99
|
|
// 10/02/00 modifications , new e.m. structure, L.Urban
|
|
// 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
|
|
// 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma)
|
|
// 19-09-01 come back to previous process name "hIoni"
|
|
// 29-10-01 all static functions no more inlined
|
|
// 07-01-02 new design of em processes (V.Ivanchenko)
|
|
// 26-12-02 secondary production moved to derived classes (VI)
|
|
// 24-01-03 Make models region aware (V.Ivanchenko)
|
|
// 05-02-03 Fix compilation warnings (V.Ivanchenko)
|
|
// 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
|
|
// 15-02-03 Add control on delta pointer (V.Ivanchenko)
|
|
// 23-05-03 Add fluctuation model as a member function (V.Ivanchenko)
|
|
// 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko)
|
|
// 16-06-03 ShortLived are not applicable any more (V.Ivanchenko)
|
|
// 08-08-03 STD substitute standard (V.Ivanchenko)
|
|
// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
|
|
// 21-01-04 Migrade to G4ParticleChangeForLoss (V.Ivanchenko)
|
|
// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
|
|
// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
|
|
// 11-04-04 Move MaxSecondaryEnergy to models (V.Ivanchenko)
|
|
//
|
|
// Class Description:
|
|
//
|
|
// This class manages the ionisation process for hadrons.
|
|
// it inherites from G4VContinuousDiscreteProcess via G4VEnergyLoss.
|
|
//
|
|
|
|
// -------------------------------------------------------------------
|
|
//
|
|
|
|
#ifndef G4hIonisation_h
|
|
#define G4hIonisation_h 1
|
|
|
|
#include "G4VEnergyLossProcess.hh"
|
|
#include "G4Electron.hh"
|
|
#include "G4Positron.hh"
|
|
#include "globals.hh"
|
|
#include "G4VEmModel.hh"
|
|
#include "G4EmCorrections.hh"
|
|
|
|
class G4Material;
|
|
|
|
class G4hIonisation : public G4VEnergyLossProcess
|
|
{
|
|
|
|
public:
|
|
|
|
G4hIonisation(const G4String& name = "hIoni");
|
|
|
|
virtual ~G4hIonisation();
|
|
|
|
G4bool IsApplicable(const G4ParticleDefinition& p);
|
|
|
|
G4double MinPrimaryEnergy(const G4ParticleDefinition* p,
|
|
const G4Material*, G4double cut);
|
|
|
|
// Print out of the class parameters
|
|
virtual void PrintInfo();
|
|
|
|
protected:
|
|
|
|
void CorrectionsAlongStep(
|
|
const G4MaterialCutsCouple*,
|
|
const G4DynamicParticle*,
|
|
G4double& eloss,
|
|
G4double& length);
|
|
|
|
virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition*,
|
|
const G4ParticleDefinition*);
|
|
|
|
private:
|
|
|
|
// hide assignment operator
|
|
G4hIonisation & operator=(const G4hIonisation &right);
|
|
G4hIonisation(const G4hIonisation&);
|
|
|
|
G4double mass;
|
|
G4double ratio;
|
|
|
|
const G4ParticleDefinition* theParticle;
|
|
const G4ParticleDefinition* theBaseParticle;
|
|
G4EmCorrections* corr;
|
|
|
|
G4bool isInitialised;
|
|
|
|
G4double eth;
|
|
G4double massratio;
|
|
|
|
};
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4bool G4hIonisation::IsApplicable(const G4ParticleDefinition& p)
|
|
{
|
|
return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV &&
|
|
!p.IsShortLived());
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4double G4hIonisation::MinPrimaryEnergy(const G4ParticleDefinition*,
|
|
const G4Material*,
|
|
G4double cut)
|
|
{
|
|
G4double x = 0.5*cut/electron_mass_c2;
|
|
G4double y = electron_mass_c2/mass;
|
|
G4double g = x*y + std::sqrt((1. + x)*(1. + x*y*y));
|
|
return mass*(g - 1.0);
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4hIonisation::CorrectionsAlongStep(
|
|
const G4MaterialCutsCouple* couple,
|
|
const G4DynamicParticle* dp,
|
|
G4double& eloss,
|
|
G4double& s)
|
|
{
|
|
G4double kinEnergy = dp->GetKineticEnergy();
|
|
if(eloss < kinEnergy && kinEnergy*massratio < eth)
|
|
eloss += s*corr->NuclearDEDX(theParticle,couple->GetMaterial(),
|
|
kinEnergy - eloss*0.5);
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
#endif
|