Gabriele Cosmo
170 lines
5.8 KiB
C++
170 lines
5.8 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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#ifndef G4DNAUeharaScreenedRutherfordElasticModel_h
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#define G4DNAUeharaScreenedRutherfordElasticModel_h 1
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "G4VEmModel.hh"
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#include "G4ParticleChangeForGamma.hh"
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#include "G4ProductionCutsTable.hh"
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#include "G4NistManager.hh"
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class G4DNAUeharaScreenedRutherfordElasticModel : public G4VEmModel
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{
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public:
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G4DNAUeharaScreenedRutherfordElasticModel(const G4ParticleDefinition* p = nullptr,
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const G4String& nam = "DNAUeharaScreenedRutherfordElasticModel");
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~G4DNAUeharaScreenedRutherfordElasticModel() override = default;
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void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
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G4double CrossSectionPerVolume(const G4Material* material,
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const G4ParticleDefinition* p,
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G4double ekin,
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G4double emin,
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G4double emax) override;
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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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inline void SelectFasterComputation(G4bool input);
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//---
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// kept for backward compatibility
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inline void SetKillBelowThreshold (G4double threshold);
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inline G4double GetKillBelowThreshold();
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inline void SelectHighEnergyLimit(G4double threshold);
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//---
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//
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G4DNAUeharaScreenedRutherfordElasticModel&
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operator=(const G4DNAUeharaScreenedRutherfordElasticModel &right) = delete;
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G4DNAUeharaScreenedRutherfordElasticModel(
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const G4DNAUeharaScreenedRutherfordElasticModel&) = delete;
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private:
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// -- Cross section
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G4double RutherfordCrossSection(G4double energy, G4double z);
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G4double ScreeningFactor(G4double energy, G4double z);
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// -- Final state according to Brenner & Zaider
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G4double BrennerZaiderRandomizeCosTheta(G4double k);
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G4double CalculatePolynomial(G4double k,
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std::vector<G4double>& vec);
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// -- Final state according to Screened Rutherford
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G4double ScreenedRutherfordRandomizeCosTheta(G4double k,
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G4double z);
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protected:
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G4ParticleChangeForGamma* fParticleChangeForGamma = nullptr;
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private:
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G4double iLowEnergyLimit;
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G4double intermediateEnergyLimit;
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G4double iHighEnergyLimit;
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// -- Brenner & Zaider
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std::vector<G4double> betaCoeff;
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std::vector<G4double> deltaCoeff;
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std::vector<G4double> gamma035_10Coeff;
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std::vector<G4double> gamma10_100Coeff;
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std::vector<G4double> gamma100_200Coeff;
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// -- Water density table
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const std::vector<G4double>* fpWaterDensity = nullptr;
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G4int verboseLevel;
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G4bool isInitialised = false;
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// Selection of computation method
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// We do not recommend "true" usage with the current cumul. proba. settings
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G4bool fasterCode = false;
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};
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inline void G4DNAUeharaScreenedRutherfordElasticModel::
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SelectFasterComputation(G4bool input)
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{
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fasterCode = input;
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}
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//---
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// kept for backward compatibility
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inline void
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G4DNAUeharaScreenedRutherfordElasticModel::SelectHighEnergyLimit(
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G4double threshold)
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{
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if(threshold > 10. * CLHEP::keV)
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{
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G4Exception (
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"*** WARNING : the G4DNAUeharaScreenedRutherfordElasticModel class is "
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"used above 10 keV !",
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"", JustWarning, "");
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}
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SetHighEnergyLimit(threshold);
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}
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inline void
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G4DNAUeharaScreenedRutherfordElasticModel::SetKillBelowThreshold(G4double)
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{
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G4ExceptionDescription errMsg;
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errMsg << "*** WARNING : "
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<< "G4DNAUeharaScreenedRutherfordElasticModel::SetKillBelowThreshold"
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<< "is deprecated, the kill threshold won't be taken into account";
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G4Exception (
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"G4DNAUeharaScreenedRutherfordElasticModel::SetKillBelowThreshold",
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"DEPRECATED", JustWarning, errMsg);
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}
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inline G4double
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G4DNAUeharaScreenedRutherfordElasticModel::GetKillBelowThreshold()
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{
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G4ExceptionDescription errMsg;
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errMsg << "*** WARNING : "
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<< "G4DNAUeharaScreenedRutherfordElasticModel::GetKillBelowThreshold"
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<< "is deprecated, the returned value is nonsense";
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G4Exception (
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"G4DNAUeharaScreenedRutherfordElasticModel::GetKillBelowThreshold",
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"DEPRECATED", JustWarning, errMsg);
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return -1;
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}
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//---
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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