Gabriele Cosmo
116 lines
4.4 KiB
Plaintext
116 lines
4.4 KiB
Plaintext
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4eBremsstrahlung.icc,v 1.6 2001/08/09 17:24:22 maire Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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// ------------ G4eBremsstrahlung physics process ---------
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// by Michel Maire, 27 July 1996
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//
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// 13-12-96 : Sign corrected in the ScreenFunctions, L.Urban
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// 20/03/97 : new energy loss+ionisation+brems scheme, L.Urban
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// 28/05/01 : V.Ivanchenko minor changes to provide ANSI -wall compilation
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// ---------------------------------------------------------------------------
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4bool G4eBremsstrahlung::IsApplicable(
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const G4ParticleDefinition& particle)
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{
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return( (&particle == G4Electron::Electron())
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||(&particle == G4Positron::Positron()) );
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eBremsstrahlung::GetMeanFreePath(const G4Track& track,
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G4double,
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G4ForceCondition*)
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// gives the MeanFreePath in GEANT4 internal units
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{
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const G4DynamicParticle* aDynamicParticle = track.GetDynamicParticle();
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G4double KineticEnergy = aDynamicParticle->GetKineticEnergy();
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G4Material* aMaterial = track.GetMaterial();
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G4double MeanFreePath;
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G4bool isOutRange;
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if (KineticEnergy < LowestKineticEnergy) MeanFreePath = DBL_MAX;
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else {
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if (KineticEnergy > HighestKineticEnergy) KineticEnergy = 0.99*HighestKineticEnergy ;
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MeanFreePath = (*theMeanFreePathTable)(aMaterial->GetIndex())->
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GetValue( KineticEnergy, isOutRange );
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}
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return MeanFreePath;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eBremsstrahlung::ScreenFunction1(G4double ScreenVariable)
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// compute the value of the screening function 3*PHI1 - PHI2
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{
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G4double screenVal;
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if (ScreenVariable > 1.)
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screenVal = 42.24 - 8.368*log(ScreenVariable+0.952);
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else
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screenVal = 42.392 - ScreenVariable* (7.796 - 1.961*ScreenVariable);
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return screenVal;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eBremsstrahlung::ScreenFunction2(G4double ScreenVariable)
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// compute the value of the screening function 1.5*PHI1 - 0.5*PHI2
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{
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G4double screenVal;
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if (ScreenVariable > 1.)
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screenVal = 42.24 - 8.368*log(ScreenVariable+0.952);
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else
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screenVal = 41.734 - ScreenVariable* (6.484 - 1.250*ScreenVariable);
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return screenVal;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4eBremsstrahlung::GetLambda(
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G4double KineticEnergy,
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G4Material* material)
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{
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G4bool isOut;
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return (*theMeanFreePathTable)[material->GetIndex()]->
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GetValue(KineticEnergy,isOut);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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