G4DNAChargeDecrease.cc

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#include "G4DNAChargeDecrease.hh"
#include "G4SystemOfUnits.hh"
#include "G4LowEnergyEmProcessSubType.hh"
#include "G4DNADingfelderChargeDecreaseModel.hh"
#include "G4DNAIonChargeDecreaseModel.hh"
 
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G4DNAChargeDecrease::G4DNAChargeDecrease(const G4String& processName,
                                         G4ProcessType type) :
    G4VEmProcess(processName, type) 
{
  SetBuildTableFlag(false);
  SetProcessSubType(fLowEnergyChargeDecrease);
}
 
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G4bool G4DNAChargeDecrease::IsApplicable(const G4ParticleDefinition& p)
{
  G4String name = p.GetParticleName();
  return (p.IsGeneralIon() ||
      name == "proton" || name == "alpha+" || name == "alpha");
}
 
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void G4DNAChargeDecrease::InitialiseProcess(const G4ParticleDefinition* p)
{
  if (!isInitialised) {
    isInitialised = true;
 
    auto mod = EmModel();
    if (nullptr == mod) { 
    
      G4String name = p->GetParticleName();
 
      if (name == "proton" || name == "alpha+" || name == "alpha") {
        SetEmModel(new G4DNADingfelderChargeDecreaseModel());
      } else {
        SetEmModel(new G4DNAIonChargeDecreaseModel());
      }
    }
    G4EmParameters* param = G4EmParameters::Instance();
    EmModel(0)->SetLowEnergyLimit(param->MinKinEnergy());
    EmModel(0)->SetHighEnergyLimit(param->MaxKinEnergy());
    AddEmModel(1, EmModel(0));
  }
}
 
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void G4DNAChargeDecrease::ProcessDescription(std::ostream& out) const
{
  out << " Total cross sections computed from " << EmModel()->GetName()
      << " model" << G4endl;
}
 
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