G4IVRestDiscreteProcess.hh

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// $Id$
//
// $Id: 
// ------------------------------------------------------------
//  GEANT 4 class header file 
//
//
// Class Description  
//  Abstract class which defines the public behavior of
//  rest + discrete physics interactions.
//
// ------------------------------------------------------------
//   New Physics scheme           8  Mar. 1997  H.Kurahige
// ------------------------------------------------------------
 
 
#ifndef G4IVRestDiscreteProcess_h
#define G4IVRestDiscreteProcess_h 1
 
#include <CLHEP/Units/SystemOfUnits.h>
 
#include "globals.hh"
#include "G4ios.hh"
#include "Randomize.hh"              
 
#include "G4VProcess.hh"
 
#include "G4Step.hh"
#include "G4Track.hh"
#include "G4MaterialTable.hh"
#include "G4VParticleChange.hh"
 
class G4IVRestDiscreteProcess : public G4VProcess 
{
  //  Abstract class which defines the public behavior of
  //  rest + discrete physics interactions.
 
  public: // with description    
 
    // constructors 
     G4IVRestDiscreteProcess(const G4String& ,
                G4ProcessType   aType = fNotDefined );
     G4IVRestDiscreteProcess(G4IVRestDiscreteProcess &);
 
  public:
     virtual ~G4IVRestDiscreteProcess();
 
  public: // with description    
     // GPIL and DoIt methods derived from G4VProcess
     virtual G4double PostStepGetPhysicalInteractionLength(
                             const G4Track& track,
                 G4double   previousStepSize,
                 G4ForceCondition* condition
                );
 
     virtual G4VParticleChange* PostStepDoIt(
                 const G4Track& ,
                 const G4Step& 
                );
 
     virtual G4double AtRestGetPhysicalInteractionLength(
                             const G4Track& ,
                 G4ForceCondition* 
                );
      
     G4VParticleChange* AtRestDoIt(
                 const G4Track& ,
                 const G4Step&
                );
 
     //  no operation in  AlongStepDoIt
     virtual G4double AlongStepGetPhysicalInteractionLength(
                             const G4Track&,
                 G4double  ,
                 G4double  ,
                 G4double& ,
                             G4GPILSelection*
                ){ return -1.0; }
 
     //  no operation in  AlongStepDoIt
     virtual G4VParticleChange* AlongStepDoIt(
                 const G4Track& ,
                 const G4Step& 
                ) {return 0;}
 
  protected:// with description    
     virtual void SubtractNumberOfInteractionLengthLeft(
                             G4double previousStepSize) ;
 
     virtual G4double GetMeanLifeTime(const G4Track& aTrack,G4ForceCondition* condition)=0;
      //  Calculates the mean life-time (i.e. for decays) of the
      //  particle at rest due to the occurence of the given process,
      //  or converts the probability of interaction (i.e. for
      //  annihilation) into the life-time of the particle for the
      //  occurence of the given process.
 
  private:
  // hide default constructor and assignment operator as private 
      G4IVRestDiscreteProcess();
      G4IVRestDiscreteProcess & operator=(const G4IVRestDiscreteProcess &right);
 
 
   protected:
      G4PhysicsTable* theNlambdaTable ;
      G4PhysicsTable* theInverseNlambdaTable ;
 
      const G4double BIGSTEP;
};
 
// -----------------------------------------
//  inlined function members implementation
// -----------------------------------------
 
inline 
 void     G4IVRestDiscreteProcess::SubtractNumberOfInteractionLengthLeft(
                             G4double )
 {
  // dummy routine
   ;
 }    
 
inline G4VParticleChange* G4IVRestDiscreteProcess::PostStepDoIt(
                 const G4Track& ,
                 const G4Step& 
                )
{ 
//  reset NumberOfInteractionLengthLeft
    ClearNumberOfInteractionLengthLeft();
 
    return pParticleChange;
}
 
inline G4double G4IVRestDiscreteProcess::AtRestGetPhysicalInteractionLength(
                             const G4Track& track,
                 G4ForceCondition* condition
                )
{
  // beggining of tracking 
  ResetNumberOfInteractionLengthLeft();
 
  // condition is set to "Not Forced"
  *condition = NotForced;
 
  // get mean life time
  currentInteractionLength = GetMeanLifeTime(track, condition);
 
#ifdef G4VERBOSE
  if ((currentInteractionLength <0.0) || (verboseLevel>2)){
    G4cout << "G4IVRestDiscreteProcess::AtRestGetPhysicalInteractionLength ";
    G4cout << "[ " << GetProcessName() << "]" <<G4endl;
    track.GetDynamicParticle()->DumpInfo();
    G4cout << " in Material  " << track.GetMaterial()->GetName() <<G4endl;
    G4cout << "MeanLifeTime = " << currentInteractionLength/CLHEP::ns << "[ns]" <<G4endl;
  }
#endif
 
  return theNumberOfInteractionLengthLeft * currentInteractionLength;
}
 
 
inline G4VParticleChange* G4IVRestDiscreteProcess::AtRestDoIt( 
                 const G4Track&,
                 const G4Step& 
                )
{
//  clear NumberOfInteractionLengthLeft
    ClearNumberOfInteractionLengthLeft();
 
    return pParticleChange;
}
 
#endif