Gabriele Cosmo
212 lines
6.9 KiB
C++
212 lines
6.9 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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//
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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: G4eCoulombScatteringModel
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 19.02.2006
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//
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// Modifications:
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// 01.08.06 V.Ivanchenko extend upper limit of table to TeV and review the
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// logic of building - only elements from G4ElementTable
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// 08.08.06 V.Ivanchenko build internal table in ekin scale, introduce faclim
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// 19.08.06 V.Ivanchenko add inline function ScreeningParameter and
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// make some members protected
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// 09.10.07 V.Ivanchenko reorganized methods, add cut dependence in scattering off e-
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// 09.06.08 V.Ivanchenko add SelectIsotope and sampling of the recoil ion
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// 17.06.09 C.Consoalndi modified SetupTarget method - remove kinFactor
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// 27.05.10 V.Ivanchenko added G4WentzelOKandVIxSection class to
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// compute cross sections and sample scattering angle
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//
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//
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// Class Description:
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//
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// Implementation of eCoulombScattering of a charge particle
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// on Atomic Nucleus for interval of scattering anles in Lab system
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// thetaMin - ThetaMax.
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// The model based on analysis of J.M.Fernandez-Varea et al.
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// NIM B73(1993)447 originated from G.Wentzel Z.Phys. 40(1927)590 with
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// screening parameter from H.A.Bethe Phys. Rev. 89 (1953) 1256.
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//
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// -------------------------------------------------------------------
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//
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#ifndef G4eCoulombScatteringModel_h
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#define G4eCoulombScatteringModel_h 1
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#include "G4VEmModel.hh"
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#include "globals.hh"
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#include "G4MaterialCutsCouple.hh"
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#include "G4WentzelOKandVIxSection.hh"
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class G4ParticleChangeForGamma;
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class G4ParticleDefinition;
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class G4IonTable;
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class G4NistManager;
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class G4eCoulombScatteringModel : public G4VEmModel
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{
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public:
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explicit G4eCoulombScatteringModel(G4bool combined = true);
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virtual ~G4eCoulombScatteringModel();
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virtual void Initialise(const G4ParticleDefinition*,
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const G4DataVector&) override;
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virtual void InitialiseLocal(const G4ParticleDefinition*,
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G4VEmModel* masterModel) override;
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virtual G4double ComputeCrossSectionPerAtom(
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const G4ParticleDefinition*,
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G4double kinEnergy,
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G4double Z,
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G4double A,
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G4double cut,
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G4double emax) override;
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virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double tmin,
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G4double maxEnergy) override;
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virtual G4double MinPrimaryEnergy(const G4Material*,
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const G4ParticleDefinition*,
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G4double) final;
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// defines low energy limit of the model
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inline void SetLowEnergyThreshold(G4double val);
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// user definition of low-energy threshold of recoil
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inline void SetRecoilThreshold(G4double eth);
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// defines low energy limit on energy transfer to atomic electron
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inline void SetFixedCut(G4double);
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// low energy limit on energy transfer to atomic electron
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inline G4double GetFixedCut() const;
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protected:
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inline void DefineMaterial(const G4MaterialCutsCouple*);
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inline void SetupParticle(const G4ParticleDefinition*);
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private:
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// hide assignment operator
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G4eCoulombScatteringModel & operator=
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(const G4eCoulombScatteringModel &right) = delete;
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G4eCoulombScatteringModel(const G4eCoulombScatteringModel&) = delete;
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//protected:
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G4IonTable* theIonTable;
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G4ParticleChangeForGamma* fParticleChange;
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G4WentzelOKandVIxSection* wokvi;
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G4NistManager* fNistManager;
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const std::vector<G4double>* pCuts;
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const G4MaterialCutsCouple* currentCouple;
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const G4Material* currentMaterial;
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G4int currentMaterialIndex;
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G4double cosThetaMin;
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G4double cosThetaMax;
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G4double recoilThreshold;
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G4double elecRatio;
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G4double mass;
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G4double fixedCut;
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// projectile
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const G4ParticleDefinition* particle;
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const G4ParticleDefinition* theProton;
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G4bool isCombined;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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void G4eCoulombScatteringModel::DefineMaterial(const G4MaterialCutsCouple* cup)
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{
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if(cup != currentCouple) {
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currentCouple = cup;
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currentMaterial = cup->GetMaterial();
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currentMaterialIndex = currentCouple->GetIndex();
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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void G4eCoulombScatteringModel::SetupParticle(const G4ParticleDefinition* p)
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{
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// Initialise mass and charge
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if(p != particle) {
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particle = p;
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mass = particle->GetPDGMass();
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wokvi->SetupParticle(p);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4eCoulombScatteringModel::SetRecoilThreshold(G4double eth)
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{
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recoilThreshold = eth;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4eCoulombScatteringModel::SetFixedCut(G4double val)
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{
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fixedCut = val;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eCoulombScatteringModel::GetFixedCut() const
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{
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return fixedCut;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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