Gabriele Cosmo
141 lines
4.9 KiB
C++
141 lines
4.9 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 Hadron physics class -- header file
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// F.W. Jones, TRIUMF, 03-DEC-96
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//
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// This class encapsulates cross section data and interpolations
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// from the Geant3/Gheisha routine GHESIG.
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// For further comments see G4HadronCrossSections.cc.
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//
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// Note: this is implemented as a SINGLETON class
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//
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// 27-MAR-97 FWJ: first version for Alpha release
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// 14-APR-97 FWJ: class name changed from G4LCrossSectionData
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// to G4HadronicCrossSections
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// 14-APR-98 FWJ: rewritten as class G4HadronCrossSections
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// and adapted to G4CrossSectionDataSet/DataStore class design.
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// 26-JUN-98 FWJ: added elastic/inelastic caching to improve performance.
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// 06-NOV-98 FWJ: added first-order correction for low-energy
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// inelastic cross sections
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//
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#ifndef G4HadronCrossSections_h
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#define G4HadronCrossSections_h 1
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#include "globals.hh"
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#include "G4DynamicParticle.hh"
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#include "G4ThreadLocalSingleton.hh"
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enum { TSIZE=41, NPARTS=35, NELAB=17, NCNLW=15, NFISS=21 };
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class G4Pow;
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class G4HadronCrossSections
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{
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friend class G4ThreadLocalSingleton<G4HadronCrossSections>;
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public:
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static G4HadronCrossSections* Instance();
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~G4HadronCrossSections();
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G4bool IsApplicable(const G4DynamicParticle* aParticle);
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G4double GetElasticCrossSection(const G4DynamicParticle*,
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G4int /*ZZ*/, G4int /*AA*/);
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G4double GetInelasticCrossSection(const G4DynamicParticle*,
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G4int /*ZZ*/, G4int /*AA*/);
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G4double GetCaptureCrossSection(const G4DynamicParticle*, G4int /*Z*/);
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G4double GetFissionCrossSection(const G4DynamicParticle*, G4int /*ZZ*/,
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G4int /*AA*/);
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void SetVerboseLevel(G4int value) {verboseLevel = value;}
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G4int GetVerboseLevel() {return verboseLevel;}
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private:
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G4HadronCrossSections();
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G4int GetParticleCode(const G4DynamicParticle*);
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void CalcScatteringCrossSections(const G4DynamicParticle*,
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G4int /*ZZ*/, G4int /*AA*/);
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static G4ThreadLocal G4HadronCrossSections* instance;
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G4Pow* g4pow;
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G4double sigelastic;
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G4double siginelastic;
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G4ParticleDefinition* prevParticleDefinition;
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G4int prevZZ;
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G4int prevAA;
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G4double prevKineticEnergy;
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G4double lastEkx, lastEkxPower;
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G4bool correctInelasticNearZero;
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G4int verboseLevel;
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// The following arrays are declared static to allow the use of initializers.
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// They are initialized in G4HadronCrossSections.cc, thus providing some
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// data hiding.
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static const G4float plab[TSIZE];
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static const G4float csel[NPARTS][TSIZE];
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static const G4float csin[NPARTS][TSIZE];
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static const G4float cspiel[3][TSIZE];
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static const G4float cspiin[3][TSIZE];
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static const G4float cspnel[3][TSIZE];
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static const G4float cspnin[3][TSIZE];
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static const G4float elab[NELAB];
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static const G4float cnlwat[NCNLW], cnlwel[NCNLW][NELAB], cnlwin[NCNLW][NELAB];
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static const G4float cscap[100];
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static const G4float ekfiss[NFISS], csfiss[4][NFISS];
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static const G4float alpha[NPARTS], alphac[TSIZE];
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static const G4float partel[35], partin[35];
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static const G4int icorr[35], intrc[35];
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static const G4float csa[4];
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static const G4int ipart2[7];
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};
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#endif
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