include/Geant4/G4DNAScreenedRutherfordElasticModel.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027
0028 #ifndef G4DNAScreenedRutherfordElasticModel_h
0029 #define G4DNAScreenedRutherfordElasticModel_h 1
0030
0031 #include <CLHEP/Units/SystemOfUnits.h>
0032
0033 #include "G4VEmModel.hh"
0034 #include "G4ParticleChangeForGamma.hh"
0035 #include "G4ProductionCutsTable.hh"
0036 #include "G4NistManager.hh"
0037
0038 class G4DNAScreenedRutherfordElasticModel : public G4VEmModel
0039 {
0040 public:
0041   G4DNAScreenedRutherfordElasticModel(const G4ParticleDefinition* p = nullptr,
0042                   const G4String& nam = "DNAScreenedRutherfordElasticModel");
0043
0044   ~G4DNAScreenedRutherfordElasticModel() override;
0045
0046   G4DNAScreenedRutherfordElasticModel& operator=
0047     (const G4DNAScreenedRutherfordElasticModel &right) = delete;
0048   G4DNAScreenedRutherfordElasticModel(const G4DNAScreenedRutherfordElasticModel&) = delete;
0049
0050   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
0051
0052   G4double CrossSectionPerVolume(const G4Material* material,
0053                                          const G4ParticleDefinition* p,
0054                                          G4double ekin,
0055                                          G4double emin,
0056                                          G4double emax) override;
0057
0058   void SampleSecondaries(std::vector<G4DynamicParticle*>*,
0059                                  const G4MaterialCutsCouple*,
0060                                  const G4DynamicParticle*,
0061                                  G4double tmin,
0062                                  G4double maxEnergy) override;
0063
0064   inline void SetKillBelowThreshold (G4double threshold);
0065
0066   inline void SelectFasterComputation(G4bool input);
0067
0068 protected:
0069   G4ParticleChangeForGamma* fParticleChangeForGamma;
0070
0071 private:
0072   G4double lowEnergyLimit;
0073   G4double intermediateEnergyLimit;
0074   G4double highEnergyLimit;
0075
0076   // -- Brenner & Zaider
0077   std::vector<G4double> betaCoeff;
0078   std::vector<G4double> deltaCoeff;
0079   std::vector<G4double> gamma035_10Coeff;
0080   std::vector<G4double> gamma10_100Coeff;
0081   std::vector<G4double> gamma100_200Coeff;
0082
0083   // -- Water density table
0084   const std::vector<G4double>* fpWaterDensity;
0085
0086   G4int verboseLevel;
0087
0088   G4bool isInitialised{false};
0089   G4bool fasterCode;
0090
0091   // -- Cross section
0092   G4double RutherfordCrossSection(G4double energy, G4double z);
0093   G4double ScreeningFactor(G4double energy, G4double z);
0094
0095   // -- Final state according to Brenner & Zaider
0096   G4double BrennerZaiderRandomizeCosTheta(G4double k);
0097   G4double CalculatePolynomial(G4double k, std::vector<G4double>& vec);
0098
0099
0100   // -- Final state according to Screened Rutherford
0101   G4double ScreenedRutherfordRandomizeCosTheta(G4double k, G4double z);
0102
0103 };
0104
0105 inline void
0106 G4DNAScreenedRutherfordElasticModel::SetKillBelowThreshold (G4double)
0107 {
0108     G4ExceptionDescription errMsg;
0109     errMsg << "The method G4DNAScreenedRutherfordElasticModel::"
0110               "SetKillBelowThreshold is deprecated";
0111
0112     G4Exception("G4DNAScreenedRutherfordElasticModel::SetKillBelowThreshold",
0113                 "deprecated",
0114                 JustWarning,
0115                 errMsg);
0116 }
0117
0118 inline void
0119 G4DNAScreenedRutherfordElasticModel::SelectFasterComputation(G4bool input)
0120 {
0121     fasterCode = input;
0122 }
0123
0124 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0125
0126 #endif