Import Geant4 6.0.0 source tree

2016-06-09 10:41:53 +02:00
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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * 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 1.1 1997/05/21
+// ----------------------------------------------------------------
+//      GEANT 4 class header file
+//
+//      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