G4RadioactiveDecayPhysics.cc

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#include "G4RadioactiveDecayPhysics.hh"
 
#include "G4RadioactiveDecay.hh"
#include "G4GenericIon.hh"
#include "globals.hh"
#include "G4PhysicsListHelper.hh"
#include "G4EmParameters.hh"
#include "G4VAtomDeexcitation.hh"
#include "G4UAtomicDeexcitation.hh"
#include "G4LossTableManager.hh"
#include "G4NuclearLevelData.hh"
#include "G4DeexPrecoParameters.hh"
#include "G4NuclideTable.hh"
#include "G4PhysListUtil.hh"
#include "G4Triton.hh"
 
// factory
#include "G4PhysicsConstructorFactory.hh"
//
G4_DECLARE_PHYSCONSTR_FACTORY(G4RadioactiveDecayPhysics);
 
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G4RadioactiveDecayPhysics::G4RadioactiveDecayPhysics(G4int ver)
:  G4VPhysicsConstructor("G4RadioactiveDecay")
{
  G4PhysListUtil::InitialiseParameters();
  SetVerboseLevel(ver);
 
  // hadronic physics extra configuration
  G4DeexPrecoParameters* deex = G4NuclearLevelData::GetInstance()->GetParameters();
  deex->SetStoreICLevelData(true);
  deex->SetMaxLifeTime(G4NuclideTable::GetInstance()->GetThresholdOfHalfLife()
                       /std::log(2.));
  deex->SetIsomerProduction(true);
}
 
G4RadioactiveDecayPhysics::G4RadioactiveDecayPhysics(const G4String&, G4int ver)
  : G4RadioactiveDecayPhysics(ver)
{}
 
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G4RadioactiveDecayPhysics::~G4RadioactiveDecayPhysics()
{}
 
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void G4RadioactiveDecayPhysics::ConstructParticle()
{
  G4GenericIon::GenericIon();
}
 
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void G4RadioactiveDecayPhysics::ConstructProcess()
{
  // EM physics extra configuration
  // this physics constructor should be defined after EM constructor
  G4EmParameters::Instance()->SetAuger(true);
  G4EmParameters::Instance()->SetDeexcitationIgnoreCut(true);
 
  G4LossTableManager* man = G4LossTableManager::Instance();
  G4VAtomDeexcitation* ad = man->AtomDeexcitation();
 
  // EM physics constructors are not used
  if( ad == nullptr ) {
    ad = new G4UAtomicDeexcitation();
    man->SetAtomDeexcitation(ad);
    man->ResetParameters();
  }
 
  G4PhysicsListHelper::GetPhysicsListHelper()->
    RegisterProcess(new G4RadioactiveDecay(), G4GenericIon::GenericIon());
 
  // Triton (which is not a generic ion) is the only light ion that decays.
  // Note that the anti_triton does not have beta decay, because RadioactiveDecay,
  // in its current implementation, does not handle any kind of anti-ions: 
  // in practice, this is an acceptable approximation because of its relatively
  // long lifetime and the fact that annihilation and nuclear capture
  // are more likely to happen before decay.
  G4PhysicsListHelper::GetPhysicsListHelper()->
    RegisterProcess(new G4RadioactiveDecay(), G4Triton::Triton());
}
 
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