XPhononDownconversionProcess.hh

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// $Id$
//
#ifndef XPhononDownconversionProcess_h
#define XPhononDownconversionProcess_h 1

#include "G4ios.hh"
#include "globals.hh"
#include "G4VDiscreteProcess.hh"

#include "XPhysicalLattice.hh"

class XPhononDownconversionProcess : public G4VDiscreteProcess 
{
  public:


     XPhononDownconversionProcess(const G4String& processName ="XPhononDownconversionProcess" );

     virtual ~XPhononDownconversionProcess();

     virtual G4VParticleChange* PostStepDoIt(
                const G4Track&, const G4Step& );
 
     virtual G4bool IsApplicable(const G4ParticleDefinition&);
                           
  protected:

     virtual G4double GetMeanFreePath(
                const G4Track&, G4double, G4ForceCondition* );



 
  private:
    double fBeta, fGamma, fLambda, fMu;

  // hide assignment operator as private 
     XPhononDownconversionProcess(XPhononDownconversionProcess&);
     XPhononDownconversionProcess& operator=(const XPhononDownconversionProcess& right);

  // relative probability that anharmonic decay occurs L->L'+T'
  inline double GetLTDecayProb(G4double, G4double);
  inline double GetTTDecayProb(G4double, G4double);
  inline double MakeLDeviation(G4double, G4double);
  inline double MakeTTDeviation(G4double, G4double);
  inline double MakeTDeviation(G4double, G4double);
  void MakeTTSecondaries(const G4Track&);
  void MakeLTSecondaries(const G4Track&);



  XPhysicalLattice* Lattice;


};

#endif