XCrystalPlanarMoliereElectricField.cc

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#include "XCrystalPlanarMoliereElectricField.hh"
#include "G4PhysicalConstants.hh"

XCrystalPlanarMoliereElectricField::XCrystalPlanarMoliereElectricField(){
    fAlfa[0] = 0.1;
    fAlfa[1] = 0.55;
    fAlfa[2] = 0.35;
    
    fBeta[0] = 6.0;
    fBeta[1] = 1.2;
    fBeta[2] = 0.3;
}

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XCrystalPlanarMoliereElectricField::~XCrystalPlanarMoliereElectricField(){
}

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G4double XCrystalPlanarMoliereElectricField::
ComputeECForSinglePlane(G4double vXposition,
                        XPhysicalLattice* vLattice){

    G4VPhysicalVolume* vVolume = vLattice->GetVolume();

    G4double aTF = ComputeTFScreeningRadius(vLattice);

    G4double vValueForSinglePlane = 0.;
    for(unsigned int i=0;i<3;i++){
        vValueForSinglePlane += ( fAlfa[i] *
                                 std::exp( - std::fabs(vXposition) * fBeta[i] / aTF ) );
    }

    vValueForSinglePlane *= 2. * CLHEP::pi;
    vValueForSinglePlane *= GetXUnitCell(vVolume)->ComputeDirectPeriod(
                                    GetXPhysicalLattice(vVolume)->GetMiller(0),
                                    GetXPhysicalLattice(vVolume)->GetMiller(1),
                                    GetXPhysicalLattice(vVolume)->GetMiller(2));
    
    vValueForSinglePlane *= (CLHEP::elm_coupling);
    
    vValueForSinglePlane *= (GetXUnitCell(vVolume)->ComputeAtomVolumeDensity());
    
    G4int vSign = +1;
    
    if(vXposition < 0.) vSign = -1;

    vValueForSinglePlane *= vSign;
    
    return vValueForSinglePlane;
}

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