//
// ********************************************************************
// * 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: G4eBremsstrahlung.icc,v 1.7 2003/01/17 18:55:43 vnivanch Exp $
// GEANT4 tag $Name: geant4-05-01 $
//
//      ------------ G4eBremsstrahlung physics process ---------
//                     by Michel Maire, 27 July 1996
// 
// 13-12-96 : Sign corrected in the ScreenFunctions, L.Urban
// 20/03/97 : new energy loss+ionisation+brems scheme, L.Urban
// 28/05/01 : V.Ivanchenko minor changes to provide ANSI -wall compilation 
// 16-01-03 Migrade to cut per region (V.Ivanchenko)
// ---------------------------------------------------------------------------

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline G4bool G4eBremsstrahlung::IsApplicable(
                            const G4ParticleDefinition& particle)
{
   return(  (&particle == G4Electron::Electron())
          ||(&particle == G4Positron::Positron()) );
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline G4double G4eBremsstrahlung::GetMeanFreePath(const G4Track& track,
                                                         G4double,
                                                         G4ForceCondition*)
 
// gives the MeanFreePath in GEANT4 internal units

{
   const G4DynamicParticle* aDynamicParticle = track.GetDynamicParticle();
   G4double KineticEnergy = aDynamicParticle->GetKineticEnergy();
   const G4MaterialCutsCouple* couple  = track.GetMaterialCutsCouple();

   G4double MeanFreePath;
   G4bool isOutRange;

   if (KineticEnergy < LowestKineticEnergy) MeanFreePath = DBL_MAX;
   else {
     if (KineticEnergy > HighestKineticEnergy) KineticEnergy = 0.99*HighestKineticEnergy ;
     MeanFreePath = (*theMeanFreePathTable)(couple->GetIndex())->
                    GetValue( KineticEnergy, isOutRange );
   }

   return MeanFreePath;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline G4double G4eBremsstrahlung::ScreenFunction1(G4double ScreenVariable)

// compute the value of the screening function 3*PHI1 - PHI2

{
   G4double screenVal;

   if (ScreenVariable > 1.)
     screenVal = 42.24 - 8.368*log(ScreenVariable+0.952);
   else
     screenVal = 42.392 - ScreenVariable* (7.796 - 1.961*ScreenVariable);

   return screenVal;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline G4double G4eBremsstrahlung::ScreenFunction2(G4double ScreenVariable)

// compute the value of the screening function 1.5*PHI1 - 0.5*PHI2

{
   G4double screenVal;

   if (ScreenVariable > 1.)
     screenVal = 42.24 - 8.368*log(ScreenVariable+0.952);
   else
     screenVal = 41.734 - ScreenVariable* (6.484 - 1.250*ScreenVariable);

   return screenVal;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline G4double G4eBremsstrahlung::GetLambda(
                              G4double KineticEnergy,
                              const G4MaterialCutsCouple* couple)
{
  G4bool isOut;
  return (*theMeanFreePathTable)[couple->GetIndex()]->
                                           GetValue(KineticEnergy,isOut);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

inline G4double G4eBremsstrahlung::SecondaryEnergyThreshold(size_t index)
{
  return (*secondaryEnergyCuts)[index];
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....