Gabriele Cosmo
122 lines
5.1 KiB
C++
122 lines
5.1 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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// GEANT4 physics class: G4PhotoNuclearCrossSection -- header file
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// Created: M.V. Kossov, CERN/ITEP(Moscow), 10-OCT-01
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// The last update: M.V. Kossov, CERN/ITEP (Moscow) 17-May-02
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#ifndef G4PhotoNuclearCrossSection_h
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#define G4PhotoNuclearCrossSection_h 1
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#include "G4VCrossSectionDataSet.hh"
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#include "G4DynamicParticle.hh"
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#include "G4Element.hh"
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#include "G4ParticleTable.hh"
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#include "G4NucleiProperties.hh"
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#include "G4NistManager.hh"
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#include <vector>
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class G4PhotoNuclearCrossSection : public G4VCrossSectionDataSet
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{
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public:
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G4PhotoNuclearCrossSection();
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~G4PhotoNuclearCrossSection() override;
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static const char* Default_Name() {return "PhotoNuclearXS";}
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void CrossSectionDescription(std::ostream&) const override;
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G4bool IsIsoApplicable(const G4DynamicParticle*, G4int Z, G4int A,
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const G4Element* elm = nullptr,
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const G4Material* mat = nullptr) override;
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G4bool IsElementApplicable(const G4DynamicParticle*, G4int Z,
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const G4Material* mat = nullptr) override;
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G4double GetIsoCrossSection(const G4DynamicParticle*,
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G4int Z, G4int A,
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const G4Isotope* iso = nullptr,
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const G4Element* elm = nullptr,
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const G4Material* mat = nullptr) override;
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G4double GetElementCrossSection(const G4DynamicParticle*, G4int Z,
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const G4Material*) override;
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G4double ComputeElementXSection(G4double energy, G4int Z);
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G4double ComputeIsoXSection(G4double energy, G4int Z, G4int A);
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G4PhotoNuclearCrossSection& operator=
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(const G4PhotoNuclearCrossSection& right) = delete;
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G4PhotoNuclearCrossSection(const G4PhotoNuclearCrossSection&) = delete;
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private:
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G4int GetFunctions(G4double a, G4double* y, G4double* z);
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G4double EquLinearFit(G4double X, G4int N, const G4double X0,
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const G4double XD, const G4double* Y);
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G4double ThresholdEnergy(G4int Z, G4int N);
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G4int lastZ = 0; // The last Z of calculated nucleus
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G4double lastSig = 0.0; // Last value of the Cross Section
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G4double* lastGDR = nullptr; // Pointer to the last array of GDR cross sections
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G4double* lastHEN = nullptr; // Pointer to the last array of HEn cross sections
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G4double lastE = 0.0; // Last used in the cross section Energy
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G4double lastTH = 0.0; // Last value of the Energy Threshold (A-dependent)
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G4double lastSP = 0.0; // Last value of the ShadowingPomeron (A-dependent)
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// Vector of pointers to the GDRPhotonuclearCrossSection
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std::vector <G4double*> GDR;
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// store deuteron, triton, He3 XS
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G4double* deuteron_GDR = nullptr;
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G4double* deuteron_HR = nullptr;
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G4double deuteron_TH = 0.0;
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G4double deuteron_SP = 0.0;
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G4double* triton_GDR = nullptr;
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G4double* triton_HR = nullptr;
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G4double triton_TH = 0.0;
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G4double triton_SP = 0.0;
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G4double* he3_GDR = nullptr;
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G4double* he3_HR = nullptr;
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G4double he3_TH = 0.0;
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G4double he3_SP = 0.0;
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// Vector of pointers to the HighEnPhotonuclearCrossSect
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std::vector <G4double*> HEN;
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std::vector <G4double> spA; // shadowing coefficients (A-dependent)
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std::vector <G4double> eTH; // energy threshold (A-dependent)
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G4NistManager* nistmngr;
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G4double mNeut;
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G4double mProt;
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};
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#endif
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