Gabriele Cosmo
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
// This code implementation is the intellectual property of
|
|
// the GEANT4 collaboration.
|
|
//
|
|
// By copying, distributing or modifying the Program (or any work
|
|
// based on the Program) you indicate your acceptance of this statement,
|
|
// and all its terms.
|
|
//
|
|
// $Id: G4GeneralPhaseSpaceDecay.hh,v 1.3 1999/12/15 14:52:50 gunter Exp $
|
|
// GEANT4 tag $Name: geant4-03-00 $
|
|
//
|
|
//$Id: G4GeneralPhaseSpaceDecay.hh,v 1.1 1997/05/21
|
|
// ----------------------------------------------------------------
|
|
// GEANT 4 class header file
|
|
//
|
|
// For information related to this code contact:
|
|
// CERN, CN Division, ASD Group
|
|
// History: first implementation, A. Feliciello, 20th May 1998
|
|
//
|
|
// Note: this class is a generalization of the
|
|
// G4PhaseSpaceDecayChannel one
|
|
// ----------------------------------------------------------------
|
|
#ifndef G4GeneralPhaseSpaceDecay_h
|
|
#define G4GeneralPhaseSpaceDecay_h 1
|
|
|
|
#include "G4ios.hh"
|
|
#include "globals.hh"
|
|
#include "G4VDecayChannel.hh"
|
|
|
|
class G4GeneralPhaseSpaceDecay : public G4VDecayChannel
|
|
{
|
|
public:
|
|
//Constructors
|
|
G4GeneralPhaseSpaceDecay(G4int Verbose = 1);
|
|
|
|
G4GeneralPhaseSpaceDecay(const G4String& theParentName,
|
|
G4double theBR,
|
|
G4int theNumberOfDaughters,
|
|
const G4String& theDaughterName1,
|
|
const G4String& theDaughterName2 = "",
|
|
const G4String& theDaughterName3 = "");
|
|
|
|
G4GeneralPhaseSpaceDecay(const G4String& theParentName,
|
|
G4double theParentMass,
|
|
G4double theBR,
|
|
G4int theNumberOfDaughters,
|
|
const G4String& theDaughterName1,
|
|
const G4String& theDaughterName2 = "",
|
|
const G4String& theDaughterName3 = "");
|
|
|
|
// Destructor
|
|
virtual ~G4GeneralPhaseSpaceDecay();
|
|
|
|
public:
|
|
G4double GetParentMass() const;
|
|
void SetParentMass(const G4double aParentMass);
|
|
virtual G4DecayProducts* DecayIt(G4double mass=0.0);
|
|
static G4double Pmx(G4double e, G4double p1, G4double p2);
|
|
|
|
protected:
|
|
G4DecayProducts* OneBodyDecayIt();
|
|
G4DecayProducts* TwoBodyDecayIt();
|
|
G4DecayProducts* ThreeBodyDecayIt();
|
|
G4DecayProducts* ManyBodyDecayIt();
|
|
|
|
private:
|
|
G4double parentmass;
|
|
|
|
};
|
|
|
|
|
|
|
|
inline G4double G4GeneralPhaseSpaceDecay::GetParentMass() const
|
|
{
|
|
return parentmass;
|
|
}
|
|
|
|
inline void G4GeneralPhaseSpaceDecay::SetParentMass(const G4double aParentMass)
|
|
{
|
|
parentmass = aParentMass;
|
|
}
|
|
|
|
|
|
|
|
inline
|
|
G4double G4GeneralPhaseSpaceDecay::Pmx(G4double e, G4double p1, G4double p2)
|
|
{
|
|
// calculate momentum of daughter particles in two-body decay
|
|
G4double ppp = (e+p1+p2)*(e+p1-p2)*(e-p1+p2)*(e-p1-p2)/(4.0*e*e);
|
|
if (ppp>0) return sqrt(ppp);
|
|
else return -1.;
|
|
}
|
|
|
|
#endif
|