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geant4/source/particles/management/include/G4PhaseSpaceDecayChannel.hh
2023-12-08 10:43:34 +01:00

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// G4PhaseSpaceDecayChannel
//
// Class description:
//
// Concrete decay channel for a particle.
// Author: H.Kurashige, 27 July 1996
// --------------------------------------------------------------------
#ifndef G4PhaseSpaceDecayChannel_hh
#define G4PhaseSpaceDecayChannel_hh 1
#include "G4Cache.hh"
#include "G4VDecayChannel.hh"
#include "G4ios.hh"
#include "globals.hh"
class G4PhaseSpaceDecayChannel : public G4VDecayChannel
{
public:
enum
{
MAX_N_DAUGHTERS = 5
};
// Constructors
G4PhaseSpaceDecayChannel(G4int Verbose = 1);
G4PhaseSpaceDecayChannel(const G4String& theParentName, G4double theBR,
G4int theNumberOfDaughters, const G4String& theDaughterName1,
const G4String& theDaughterName2 = "",
const G4String& theDaughterName3 = "",
const G4String& theDaughterName4 = "",
const G4String& theDaughterName5 = "");
// Destructor
~G4PhaseSpaceDecayChannel() override = default;
// Give daughter masses instead of sampling masses
// according to PDG mass and width
G4bool SetDaughterMasses(G4double masses[]);
G4bool SampleDaughterMasses();
G4DecayProducts* DecayIt(G4double) override;
G4bool IsOKWithParentMass(G4double parentMass) override;
static G4double Pmx(G4double e, G4double p1, G4double p2);
private:
G4DecayProducts* OneBodyDecayIt();
G4DecayProducts* TwoBodyDecayIt();
G4DecayProducts* ThreeBodyDecayIt();
G4DecayProducts* ManyBodyDecayIt();
G4Cache<G4double> current_parent_mass; // A thread-local object
G4double givenDaughterMasses[MAX_N_DAUGHTERS];
G4bool useGivenDaughterMass = false;
};
#endif