include/Geant4/G4PhaseSpaceDecayChannel.hh

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0025 //
0026 // G4PhaseSpaceDecayChannel
0027 //
0028 // Class description:
0029 //
0030 // Concrete decay channel for a particle.
0031
0032 // Author: H.Kurashige, 27 July 1996
0033 // --------------------------------------------------------------------
0034 #ifndef G4PhaseSpaceDecayChannel_hh
0035 #define G4PhaseSpaceDecayChannel_hh 1
0036
0037 #include "G4Cache.hh"
0038 #include "G4VDecayChannel.hh"
0039 #include "G4ios.hh"
0040 #include "globals.hh"
0041
0042 class G4PhaseSpaceDecayChannel : public G4VDecayChannel
0043 {
0044   public:
0045     enum
0046     {
0047       MAX_N_DAUGHTERS = 5
0048     };
0049
0050     // Constructors
0051     G4PhaseSpaceDecayChannel(G4int Verbose = 1);
0052     G4PhaseSpaceDecayChannel(const G4String& theParentName, G4double theBR,
0053                              G4int theNumberOfDaughters, const G4String& theDaughterName1,
0054                              const G4String& theDaughterName2 = "",
0055                              const G4String& theDaughterName3 = "",
0056                              const G4String& theDaughterName4 = "",
0057                              const G4String& theDaughterName5 = "");
0058
0059     // Destructor
0060     ~G4PhaseSpaceDecayChannel() override = default;
0061
0062     // Give daughter masses instead of sampling masses
0063     // according to PDG mass and width
0064     G4bool SetDaughterMasses(G4double masses[]);
0065
0066     G4bool SampleDaughterMasses();
0067
0068     G4DecayProducts* DecayIt(G4double) override;
0069     G4bool IsOKWithParentMass(G4double parentMass) override;
0070
0071     static G4double Pmx(G4double e, G4double p1, G4double p2);
0072
0073   private:
0074     G4DecayProducts* OneBodyDecayIt();
0075     G4DecayProducts* TwoBodyDecayIt();
0076     G4DecayProducts* ThreeBodyDecayIt();
0077     G4DecayProducts* ManyBodyDecayIt();
0078
0079     G4Cache<G4double> current_parent_mass;  // A thread-local object
0080     G4double givenDaughterMasses[MAX_N_DAUGHTERS];
0081     G4bool useGivenDaughterMass = false;
0082 };
0083
0084 #endif