Gabriele Cosmo
96 lines
3.4 KiB
Plaintext
96 lines
3.4 KiB
Plaintext
//
|
|
// ********************************************************************
|
|
// * 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: G4LowEnergyGammaConversion.icc,v 1.11.2.2 2001/06/28 20:19:23 gunter Exp $
|
|
// GEANT4 tag $Name: $
|
|
//
|
|
//
|
|
// ---------------------------------------------------------------
|
|
// GEANT 4 class inlined methods file
|
|
//
|
|
// ------------ G4LowEnergyGammaConversion physics process ---------
|
|
// by A.Forti 1999/03/02
|
|
// ***************************************************************
|
|
|
|
inline G4bool G4LowEnergyGammaConversion::IsApplicable(const G4ParticleDefinition& particle)
|
|
{
|
|
return ( &particle == G4Gamma::Gamma() );
|
|
}
|
|
|
|
inline G4double
|
|
G4LowEnergyGammaConversion::GetMeanFreePath(const G4Track& aTrack, G4double, G4ForceCondition*){
|
|
|
|
// returns the gamma mean free path in GEANT4 internal units
|
|
const G4DynamicParticle* aDynamicGamma = aTrack.GetDynamicParticle();
|
|
G4double GammaEnergy = aDynamicGamma->GetKineticEnergy();
|
|
G4Material* aMaterial = aTrack.GetMaterial();
|
|
|
|
// G4bool isOutRange ;
|
|
|
|
if (GammaEnergy < lowestEnergyLimit){
|
|
MeanFreePath = DBL_MAX;
|
|
|
|
}
|
|
else {
|
|
if(GammaEnergy > highestEnergyLimit) GammaEnergy = 0.99*highestEnergyLimit;
|
|
MeanFreePath = util.DataLogInterpolation(GammaEnergy, aMaterial->GetIndex(), theMeanFreePathTable);
|
|
|
|
}
|
|
|
|
return MeanFreePath;
|
|
}
|
|
|
|
inline G4double
|
|
G4LowEnergyGammaConversion::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;
|
|
}
|
|
|
|
inline G4double
|
|
G4LowEnergyGammaConversion::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 = 41.405 - ScreenVariable* (5.828 - 0.8945*ScreenVariable);
|
|
|
|
return screenVal;
|
|
}
|
|
|
|
|
|
|