Gabriele Cosmo
70 lines
2.9 KiB
C++
70 lines
2.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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/// \file channeling/src/XCrystalPlanarMoliereElectronDensity.cc
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/// \brief Implementation of the XCrystalPlanarMoliereElectronDensity class
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//
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#include "XCrystalPlanarMoliereElectronDensity.hh"
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XCrystalPlanarMoliereElectronDensity::XCrystalPlanarMoliereElectronDensity(){
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fAlfa[0] = 0.1;
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fAlfa[1] = 0.55;
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fAlfa[2] = 0.35;
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fBeta[0] = 6.0;
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fBeta[1] = 1.2;
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fBeta[2] = 0.3;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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XCrystalPlanarMoliereElectronDensity::~XCrystalPlanarMoliereElectronDensity(){
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double XCrystalPlanarMoliereElectronDensity::
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ComputeECForSinglePlane(G4double vXposition,
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XPhysicalLattice* vLattice){
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G4double aTF = ComputeTFScreeningRadius(vLattice);
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G4double vValueForSinglePlane = 0.;
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for(unsigned int i=0;i<3;i++){
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vValueForSinglePlane += ( fAlfa[i] * fBeta[i] *
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std::exp( - std::fabs(vXposition) * fBeta[i] / aTF ) *
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( 1. + fBeta[i] * std::fabs(vXposition) / aTF) );
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}
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vValueForSinglePlane /= aTF;
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vValueForSinglePlane *= 0.25;
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return vValueForSinglePlane;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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