G4NeutronCaptureXS.hh

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// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:    G4NeutronCaptureXS
//
// Author  Ivantchenko, Geant4, 3-AUG-09
//
// Modifications:
//
 
// Class Description:
// This is a base class for neutron radiative capture cross section based on
// data files from G4PARTICLEXSDATA data set 
// Class Description - End
 
#ifndef G4NeutronCaptureXS_h
#define G4NeutronCaptureXS_h 1
 
#include "G4VCrossSectionDataSet.hh"
#include "globals.hh"
#include "G4ElementData.hh"
#include "G4PhysicsVector.hh"
#include <vector>
#include <iostream>
 
class G4DynamicParticle;
class G4ParticleDefinition;
class G4Element;
 
class G4NeutronCaptureXS final : public G4VCrossSectionDataSet
{
public: 
 
  G4NeutronCaptureXS();
 
  ~G4NeutronCaptureXS() override = default;
    
  static const char* Default_Name() {return "G4NeutronCaptureXS";}
 
  G4bool IsElementApplicable(const G4DynamicParticle*, G4int Z,
                 const G4Material*) final;
 
  G4bool IsIsoApplicable(const G4DynamicParticle*, G4int Z, G4int A,
             const G4Element*, const G4Material*) final;
 
  G4double GetElementCrossSection(const G4DynamicParticle*, 
                  G4int Z, const G4Material*) final;
 
  G4double ComputeCrossSectionPerElement(G4double kinEnergy, G4double loge,
                                         const G4ParticleDefinition*,
                                         const G4Element*,
                                         const G4Material*) final;
  
  G4double ComputeIsoCrossSection(G4double kinEnergy, G4double loge,
                                  const G4ParticleDefinition*,
                                  G4int Z, G4int A,
                                  const G4Isotope* iso,
                                  const G4Element* elm,
                                  const G4Material* mat) final;
 
  G4double GetIsoCrossSection(const G4DynamicParticle*, G4int Z, G4int A,
                              const G4Isotope* iso,
                              const G4Element* elm,
                              const G4Material* mat) final;
 
  const G4Isotope* SelectIsotope(const G4Element*, G4double kinEnergy,
                                 G4double logE) final;
 
  void BuildPhysicsTable(const G4ParticleDefinition&) final;
 
  void CrossSectionDescription(std::ostream&) const final;
 
  G4double ElementCrossSection(G4double kinEnergy, G4double loge, G4int Z);
 
  G4double IsoCrossSection(G4double ekin, G4double logekin, G4int Z, G4int A);
 
  G4NeutronCaptureXS & operator=(const G4NeutronCaptureXS &right) = delete;
  G4NeutronCaptureXS(const G4NeutronCaptureXS&) = delete;
 
private: 
 
  void Initialise(G4int Z);
 
  void InitialiseOnFly(G4int Z);
 
  const G4String& FindDirectoryPath();
 
  inline const G4PhysicsVector* GetPhysicsVector(G4int Z);
 
  G4PhysicsVector* RetrieveVector(std::ostringstream& in, G4bool warn);
 
  G4double emax;
  G4double elimit;
  G4double logElimit;
 
  std::vector<G4double> temp;
 
  G4bool isInitializer{false};
 
  static const G4int MAXZCAPTURE = 93;
  static G4ElementData* data;
  static G4String gDataDirectory;
};
 
inline
const G4PhysicsVector* G4NeutronCaptureXS::GetPhysicsVector(G4int Z)
{
  const G4PhysicsVector* pv = data->GetElementData(Z);
  if(pv == nullptr) { 
    InitialiseOnFly(Z);
    pv = data->GetElementData(Z);
  }
  return pv;
}
 
#endif