include/Geant4/G4UPiNuclearCrossSection.hh

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0025 //
0026 // Calculation of the total, elastic and inelastic cross-sections
0027 // based on Barashenkov parametrisations of pion data
0028 //
0029 // 16.08.06 V.Ivanchenko - first implementation
0030 // 22.01.07 V.Ivanchenko - add cross section interfaces with Z and A
0031 // 05.03.07 V.Ivanchenko - add IfZAApplicable
0032 //
0033
0034 #ifndef G4UPiNuclearCrossSection_h
0035 #define G4UPiNuclearCrossSection_h
0036
0037 #include "G4VCrossSectionDataSet.hh"
0038 #include "G4DynamicParticle.hh"
0039 #include "G4ParticleDefinition.hh"
0040 #include "globals.hh"
0041 #include "G4Threading.hh"
0042
0043 class G4PhysicsTable;
0044
0045 class G4UPiNuclearCrossSection : public G4VCrossSectionDataSet
0046 {
0047 public:
0048
0049   explicit G4UPiNuclearCrossSection();
0050
0051   ~G4UPiNuclearCrossSection() override;
0052
0053   G4bool IsElementApplicable(const G4DynamicParticle* aParticle,
0054                  G4int Z, const G4Material*) final;
0055
0056   inline
0057   G4double GetElasticCrossSection(const G4DynamicParticle* aParticle,
0058                   G4int Z, G4int A) const;
0059
0060   inline
0061   G4double GetInelasticCrossSection(const G4DynamicParticle* aParticle,
0062                     G4int Z, G4int A) const;
0063
0064   void BuildPhysicsTable(const G4ParticleDefinition&) final;
0065
0066   void DumpPhysicsTable(const G4ParticleDefinition&) final;
0067
0068   void CrossSectionDescription(std::ostream&) const final;
0069
0070 private:
0071
0072   G4double Interpolate(G4int Z, G4int A, G4double ekin,
0073                        const G4PhysicsTable*) const;
0074
0075   void AddDataSet(const G4String& p, const G4double* tot,
0076           const G4double* in, const G4double* e, G4int n);
0077
0078   void LoadData();
0079
0080   const G4ParticleDefinition* piPlus;
0081   const G4ParticleDefinition* piMinus;
0082
0083   static const G4int NZ = 16;
0084   static G4int theZ[NZ];
0085   static G4int idxZ[93];
0086
0087   static G4double theA[NZ];
0088   static G4double APower[93];
0089
0090   static G4PhysicsTable* piPlusElastic;
0091   static G4PhysicsTable* piPlusInelastic;
0092   static G4PhysicsTable* piMinusElastic;
0093   static G4PhysicsTable* piMinusInelastic;
0094
0095   G4double aPower;
0096   G4double elow;
0097
0098   G4bool isMaster;
0099   G4bool spline;
0100
0101 #ifdef G4MULTITHREADED
0102   static G4Mutex pionUXSMutex;
0103 #endif
0104 };
0105
0106 inline G4double
0107 G4UPiNuclearCrossSection::GetElasticCrossSection(
0108        const G4DynamicParticle* dp, G4int Z, G4int A) const
0109 {
0110   const G4PhysicsTable* table =
0111     (dp->GetDefinition() == piPlus) ? piPlusElastic : piMinusElastic;
0112   return Interpolate(Z, A, dp->GetKineticEnergy(), table);
0113 }
0114
0115 inline G4double
0116 G4UPiNuclearCrossSection::GetInelasticCrossSection(
0117        const G4DynamicParticle* dp, G4int Z, G4int A) const
0118 {
0119   const G4PhysicsTable* table =
0120     (dp->GetDefinition() == piPlus) ? piPlusInelastic : piMinusInelastic;
0121   return Interpolate(Z, A, dp->GetKineticEnergy(), table);
0122 }
0123
0124 #endif