include/Geant4/G4ChargeExchange.hh

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0025 //
0026 //
0027 // G4 Model: Charge and strangness exchange based on G4LightMedia model
0028 //           28 May 2006 V.Ivanchenko
0029 //
0030 // Modified:
0031 // 25-Jul-06 V.Ivanchenko add 19 MeV low energy, below which S-wave is sampled
0032 //
0033
0034 #ifndef G4ChargeExchange_h
0035 #define G4ChargeExchange_h 1
0036
0037 // Class Description
0038 // Final state production model for hadron nuclear coherent charge exchange;
0039 // Class Description - End
0040
0041 #include "globals.hh"
0042 #include "G4HadronicInteraction.hh"
0043 #include "G4HadProjectile.hh"
0044 #include "G4Nucleus.hh"
0045
0046 class G4ParticleDefinition;
0047 class G4ChargeExchangeXS;
0048 class G4ExcitationHandler;
0049 class G4NistManager;
0050
0051 class G4ChargeExchange : public G4HadronicInteraction
0052 {
0053 public:
0054
0055   explicit G4ChargeExchange(G4ChargeExchangeXS*);
0056   ~G4ChargeExchange() override;
0057
0058   G4ChargeExchange( const G4ChargeExchange &right ) = delete;
0059   const G4ChargeExchange & operator=( const G4ChargeExchange &right ) = delete;
0060   G4bool operator==( const G4ChargeExchange &right ) const = delete;
0061   G4bool operator!=( const G4ChargeExchange &right ) const = delete;
0062
0063   G4HadFinalState* ApplyYourself(const G4HadProjectile& aTrack,
0064                                  G4Nucleus& targetNucleus) override;
0065
0066   G4double SampleT(const G4ParticleDefinition* theSec, const G4int A,
0067            const G4double tmax) const;
0068
0069 private:
0070
0071   G4bool SampleMass(G4double& mass, const G4double width, const G4double elim);
0072
0073   G4ChargeExchangeXS* fXSection;
0074   G4ExcitationHandler* fHandler;
0075   G4NistManager* nist;
0076
0077   G4int secID;  // Creator model ID for the secondaries created by this model
0078   G4double lowEnergyLimit; // lowest limit to avoid numerical problems
0079   G4double fXSWeightFactor;
0080 };
0081
0082 #endif