G4IRTUtils.cc

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#include "G4IRTUtils.hh"
#include "globals.hh"
#include "G4SystemOfUnits.hh"
#include "G4ErrorFunction.hh"
G4double G4IRTUtils::EffectiveDistance(const G4double& rc,
                                       const G4double& r0)
{
    return r0 == 0 ? 0 : - rc / (1 - std::exp( rc / r0 ) );
}
 
 
G4double G4IRTUtils::GetRCutOff()
{
    G4double tCutOff = 1000 * ns;
    
    G4double probabilityOfReaction = 0.01;
    G4double maximumReactionRadius = 1.45*CLHEP::nm;//??
    G4double maximumRelativeDiffusionCoefficient = 2.0*9.46e9 *CLHEP::nm*CLHEP::nm/CLHEP::s;//??
    G4double erfcInv = G4ErrorFunction::erfcInv(probabilityOfReaction);
    return maximumReactionRadius + 2.0 *
    std::sqrt(maximumRelativeDiffusionCoefficient * tCutOff) * erfcInv;
}
 
 
G4double G4IRTUtils::GetRCutOff(G4double tCutOff)
{
    G4double probabilityOfReaction = 0.01;
    G4double maximumReactionRadius = 1.45*CLHEP::nm;//??
    G4double maximumRelativeDiffusionCoefficient = 2.0*9.46e9 *CLHEP::nm*CLHEP::nm/CLHEP::s;//??
    G4double erfcInv = G4ErrorFunction::erfcInv(probabilityOfReaction);
    return maximumReactionRadius + 2.0 *
    std::sqrt(maximumRelativeDiffusionCoefficient * tCutOff) * erfcInv;
}
 
G4double G4IRTUtils::GetDNADistanceCutOff()
{
    G4double tCutOff = 100 * ps;
    
    G4double probabilityOfReaction = 0.01;
    G4double maximumReactionRadius = 1.45*CLHEP::nm;//??
    G4double maximumRelativeDiffusionCoefficient = 2.0*9.46e9 *CLHEP::nm*CLHEP::nm/CLHEP::s;//??
    G4double erfcInv = G4ErrorFunction::erfcInv(probabilityOfReaction);
    return maximumReactionRadius + 2.0 *
    std::sqrt(maximumRelativeDiffusionCoefficient * tCutOff) * erfcInv;
}