include/Geant4/G4VEmissionProbability.hh

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0025 //
0026 // Hadronic Process: Nuclear De-excitations
0027 // by V. Lara (Oct 1998)
0028 //
0029 // Modif (03 September 2008) by J. M. Quesada for external choice of inverse
0030 // cross section option
0031 // JMQ (06 September 2008) Also external choices have been added for
0032 // superimposed Coulomb barrier (if useSICB is set true, by default is false)
0033 //
0034 // V.Ivanchenko general clean-up since 2010
0035 //
0036
0037 #ifndef G4VEmissionProbability_h
0038 #define G4VEmissionProbability_h 1
0039
0040 #include "globals.hh"
0041 #include "G4Fragment.hh"
0042 #include "G4VSIntegration.hh"
0043
0044 class G4NuclearLevelData;
0045 class G4Pow;
0046
0047 class G4VEmissionProbability : G4VSIntegration
0048 {
0049 public:
0050
0051   explicit G4VEmissionProbability(G4int Z, G4int A);
0052
0053   ~G4VEmissionProbability() override = default;
0054
0055   G4double ProbabilityDensityFunction(G4double energy) override;
0056
0057   virtual void Initialise();
0058
0059   virtual G4double EmissionProbability(const G4Fragment & fragment,
0060                        G4double anEnergy);
0061
0062   virtual G4double ComputeProbability(G4double anEnergy, G4double CB);
0063
0064   G4int GetZ(void) const { return theZ; }
0065
0066   G4int GetA(void) const { return theA; }
0067
0068   // Z, A, rmass are residual parameters
0069   // fmass is SCM mass of decaying nucleus
0070   // exc is an excitation of emitted fragment
0071   void SetDecayKinematics(G4int rZ, G4int rA, G4double rmass, G4double fmass)
0072   {
0073     resZ = rZ;
0074     resA = rA;
0075     pMass = fmass;
0076     pResMass = rmass;
0077   }
0078
0079   G4double GetRecoilExcitation() const { return fExcRes; };
0080
0081   void SetEvapExcitation(G4double exc) { fExc = exc; };
0082
0083   G4double GetProbability() const { return pProbability; };
0084
0085   void ResetProbability() { pProbability = 0.0; };
0086
0087   // this method may be called only if the probability is computed
0088   // for given initial fragment and decay channel
0089   G4double SampleEnergy();
0090
0091   G4VEmissionProbability(const G4VEmissionProbability &right) = delete;
0092   const G4VEmissionProbability & operator=
0093   (const G4VEmissionProbability &right) = delete;
0094   G4bool operator==(const G4VEmissionProbability &right) const = delete;
0095   G4bool operator!=(const G4VEmissionProbability &right) const = delete;
0096
0097 protected:
0098
0099   void ResetIntegrator(G4double de, G4double eps);
0100
0101   G4double IntegrateProbability(G4double elow, G4double ehigh, G4double CB);
0102
0103   G4NuclearLevelData* pNuclearLevelData;
0104   G4Pow* pG4pow;
0105
0106   G4int OPTxs;
0107   G4int pVerbose;
0108   G4int theZ;
0109   G4int theA;
0110   G4int resZ = 0;
0111   G4int resA = 0;
0112
0113   G4double pMass = 0.0; // initial fragment
0114   G4double pEvapMass = 0.0;
0115   G4double pResMass = 0.0;
0116   G4double pProbability = 0.0;
0117   G4double pTolerance = 0.0;
0118   G4double pWidth = 0.0;
0119
0120 private:
0121
0122   G4double FindRecoilExcitation(const G4double e);
0123
0124   G4double fExc = 0.0;
0125   G4double fExcRes = 0.0;
0126   G4double eCoulomb = 0.0;
0127   G4double fMaxLifeTime = 1.0;
0128   G4bool fFD = false;
0129 };
0130
0131 #endif