Gabriele Cosmo
133 lines
4.8 KiB
C++
133 lines
4.8 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. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// GEANT4 Class header file
|
|
//
|
|
//
|
|
// File name: G4GammaNuclearXS
|
|
//
|
|
// Authors V.Ivantchenko, Geant4, 20 October 2020
|
|
// B.Kutsenko, BINP/NSU, 10 August 2021
|
|
//
|
|
//
|
|
// Class Description:
|
|
// This is a base class for gamma-nuclear cross section based on
|
|
// data files from IAEA Evaluated Photonuclear Data Library (IAEA/PD-2019)
|
|
// https://www-nds.iaea.org/photonuclear/
|
|
// Database review:
|
|
// https://www.sciencedirect.com/science/article/pii/S0090375219300699?via%3Dihub
|
|
//
|
|
|
|
#ifndef G4GammaNuclearXS_h
|
|
#define G4GammaNuclearXS_h 1
|
|
|
|
#include "G4VCrossSectionDataSet.hh"
|
|
#include "globals.hh"
|
|
#include <vector>
|
|
|
|
class G4DynamicParticle;
|
|
class G4ParticleDefinition;
|
|
class G4Element;
|
|
class G4ElementData;
|
|
class G4PhysicsVector;
|
|
class G4PhotoNuclearCrossSection;
|
|
|
|
class G4GammaNuclearXS final : public G4VCrossSectionDataSet
|
|
{
|
|
public:
|
|
|
|
G4GammaNuclearXS();
|
|
|
|
~G4GammaNuclearXS() override = default;
|
|
|
|
static const char* Default_Name() { return "GammaNuclearXS"; }
|
|
|
|
G4bool IsElementApplicable(const G4DynamicParticle*,
|
|
G4int Z, const G4Material*) final;
|
|
|
|
G4bool IsIsoApplicable(const G4DynamicParticle*, G4int Z, G4int A,
|
|
const G4Element*, const G4Material* mat) final;
|
|
|
|
G4double GetElementCrossSection(const G4DynamicParticle*,
|
|
G4int Z,
|
|
const G4Material* mat = nullptr) final;
|
|
|
|
G4double GetIsoCrossSection(const G4DynamicParticle*, G4int Z, G4int A,
|
|
const G4Isotope* iso = nullptr,
|
|
const G4Element* elm = nullptr,
|
|
const G4Material* mat = nullptr) final;
|
|
|
|
const G4Isotope* SelectIsotope(const G4Element*,
|
|
G4double kinEnergy, G4double logE) final;
|
|
|
|
void BuildPhysicsTable(const G4ParticleDefinition&) final;
|
|
|
|
G4double IsoCrossSection(const G4double ekin, const G4int Z, const G4int A);
|
|
|
|
G4double ElementCrossSection(const G4double ekin, const G4int Z);
|
|
|
|
G4double LowEnergyCrossSection(G4double ekin, G4int Z);
|
|
|
|
void CrossSectionDescription(std::ostream&) const final;
|
|
|
|
G4GammaNuclearXS & operator=(const G4GammaNuclearXS &right) = delete;
|
|
G4GammaNuclearXS(const G4GammaNuclearXS&) = delete;
|
|
|
|
private:
|
|
|
|
void Initialise(G4int Z);
|
|
|
|
const G4String& FindDirectoryPath();
|
|
|
|
G4PhysicsVector* RetrieveVector(std::ostringstream& in, G4bool warn, G4int Z);
|
|
|
|
G4PhotoNuclearCrossSection* ggXsection = nullptr;
|
|
const G4ParticleDefinition* gamma;
|
|
|
|
// Cache
|
|
G4double fXS = 0.0;
|
|
G4double fEkin = 0.0;
|
|
G4int fZ = 0;
|
|
|
|
static const G4int MAXZGAMMAXS = 95;
|
|
static const G4int MAXNFREE = 11;
|
|
static G4ElementData* data;
|
|
// The list of elements with non-linear parametrisation for better precision
|
|
static const G4int freeVectorException[MAXNFREE];
|
|
// CHIPS photonuclear model had a problem with high energy parametrisation
|
|
// for isotopes of H and He, coefficient is needed to connect isotope cross
|
|
// section with element cross-section on high energies.
|
|
static G4double coeff[3][3];
|
|
static G4double xs150[MAXZGAMMAXS];
|
|
static G4String gDataDirectory;
|
|
|
|
std::vector<G4double> temp;
|
|
};
|
|
|
|
#endif
|