Gabriele Cosmo
125 lines
4.2 KiB
C++
125 lines
4.2 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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// Calculation of the total, elastic and inelastic cross-sections
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// based on Barashenkov parametrisations of pion data
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//
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// 16.08.06 V.Ivanchenko - first implementation
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// 22.01.07 V.Ivanchenko - add cross section interfaces with Z and A
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// 05.03.07 V.Ivanchenko - add IfZAApplicable
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//
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#ifndef G4UPiNuclearCrossSection_h
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#define G4UPiNuclearCrossSection_h
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#include "G4VCrossSectionDataSet.hh"
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#include "G4DynamicParticle.hh"
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#include "G4ParticleDefinition.hh"
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#include "globals.hh"
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#include "G4Threading.hh"
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class G4PhysicsTable;
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class G4UPiNuclearCrossSection : public G4VCrossSectionDataSet
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{
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public:
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explicit G4UPiNuclearCrossSection();
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~G4UPiNuclearCrossSection() override;
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G4bool IsElementApplicable(const G4DynamicParticle* aParticle,
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G4int Z, const G4Material*) final;
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inline
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G4double GetElasticCrossSection(const G4DynamicParticle* aParticle,
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G4int Z, G4int A) const;
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inline
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G4double GetInelasticCrossSection(const G4DynamicParticle* aParticle,
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G4int Z, G4int A) const;
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void BuildPhysicsTable(const G4ParticleDefinition&) final;
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void DumpPhysicsTable(const G4ParticleDefinition&) final;
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void CrossSectionDescription(std::ostream&) const final;
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private:
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G4double Interpolate(G4int Z, G4int A, G4double ekin,
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const G4PhysicsTable*) const;
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void AddDataSet(const G4String& p, const G4double* tot,
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const G4double* in, const G4double* e, G4int n);
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void LoadData();
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const G4ParticleDefinition* piPlus;
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const G4ParticleDefinition* piMinus;
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static const G4int NZ = 16;
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static G4int theZ[NZ];
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static G4int idxZ[93];
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static G4double theA[NZ];
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static G4double APower[93];
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static G4PhysicsTable* piPlusElastic;
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static G4PhysicsTable* piPlusInelastic;
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static G4PhysicsTable* piMinusElastic;
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static G4PhysicsTable* piMinusInelastic;
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G4double aPower;
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G4double elow;
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G4bool isMaster;
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G4bool spline;
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#ifdef G4MULTITHREADED
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static G4Mutex pionUXSMutex;
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#endif
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};
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inline G4double
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G4UPiNuclearCrossSection::GetElasticCrossSection(
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const G4DynamicParticle* dp, G4int Z, G4int A) const
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{
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const G4PhysicsTable* table =
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(dp->GetDefinition() == piPlus) ? piPlusElastic : piMinusElastic;
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return Interpolate(Z, A, dp->GetKineticEnergy(), table);
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}
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inline G4double
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G4UPiNuclearCrossSection::GetInelasticCrossSection(
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const G4DynamicParticle* dp, G4int Z, G4int A) const
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{
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const G4PhysicsTable* table =
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(dp->GetDefinition() == piPlus) ? piPlusInelastic : piMinusInelastic;
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return Interpolate(Z, A, dp->GetKineticEnergy(), table);
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}
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#endif
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