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
0042 class G4PhysicsTable;
0043
0044 class G4UPiNuclearCrossSection : public G4VCrossSectionDataSet
0045 {
0046 public:
0047
0048   explicit G4UPiNuclearCrossSection();
0049
0050   ~G4UPiNuclearCrossSection() override = default;
0051
0052   G4bool IsElementApplicable(const G4DynamicParticle* aParticle,
0053                  G4int Z, const G4Material*) final;
0054
0055   inline
0056   G4double GetElasticCrossSection(const G4DynamicParticle* aParticle,
0057                   G4int Z, G4int A) const;
0058
0059   inline
0060   G4double GetInelasticCrossSection(const G4DynamicParticle* aParticle,
0061                     G4int Z, G4int A) const;
0062
0063   void BuildPhysicsTable(const G4ParticleDefinition&) final;
0064
0065   void DumpPhysicsTable(const G4ParticleDefinition&) final;
0066
0067   void CrossSectionDescription(std::ostream&) const final;
0068
0069 private:
0070
0071   G4double Interpolate(G4int Z, G4int A, G4double ekin,
0072                        const G4PhysicsTable*) const;
0073
0074   void AddDataSet(const G4String& p, const G4double* tot,
0075           const G4double* in, const G4double* e, G4int n);
0076
0077   void LoadData();
0078
0079   const G4ParticleDefinition* piPlus;
0080   const G4ParticleDefinition* piMinus;
0081
0082   static const G4int NZ = 16;
0083   static G4int theZ[NZ];
0084   static G4int idxZ[93];
0085
0086   static G4double theA[NZ];
0087   static G4double APower[93];
0088
0089   static G4PhysicsTable* piPlusElastic;
0090   static G4PhysicsTable* piPlusInelastic;
0091   static G4PhysicsTable* piMinusElastic;
0092   static G4PhysicsTable* piMinusInelastic;
0093
0094   G4double aPower{0.75};
0095   G4double elow;
0096
0097   G4bool spline{false};
0098 };
0099
0100 inline G4double
0101 G4UPiNuclearCrossSection::GetElasticCrossSection(
0102        const G4DynamicParticle* dp, G4int Z, G4int A) const
0103 {
0104   const G4PhysicsTable* table =
0105     (dp->GetDefinition() == piPlus) ? piPlusElastic : piMinusElastic;
0106   return Interpolate(Z, A, dp->GetKineticEnergy(), table);
0107 }
0108
0109 inline G4double
0110 G4UPiNuclearCrossSection::GetInelasticCrossSection(
0111        const G4DynamicParticle* dp, G4int Z, G4int A) const
0112 {
0113   const G4PhysicsTable* table =
0114     (dp->GetDefinition() == piPlus) ? piPlusInelastic : piMinusInelastic;
0115   return Interpolate(Z, A, dp->GetKineticEnergy(), table);
0116 }
0117
0118 #endif