G4ContinuumGammaDeexcitation.cc

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// $Id: G4ContinuumGammaDeexcitation.cc 87017 2014-11-21 16:26:26Z gcosmo $
//
// -------------------------------------------------------------------
//      GEANT 4 class file 
//
//      CERN, Geneva, Switzerland
//
//      File name:     G4ContinuumGammaDeexcitation
//
//      Authors:       Carlo Dallapiccola (dallapiccola@umdhep.umd.edu)
//                     Maria Grazia Pia (pia@genova.infn.it)
// 
//      Creation date: 23 October 1998
//
//      Modifications: 
//
//      02 May 2003,   Vladimir Ivanchenko change interface to G4NuclearlevelManager
//
//      19 April 2010 J. M. Quesada: smaller value of tolerance parameter
//      
// -------------------------------------------------------------------
//
// Class G4ContinuumGammaDeexcitation.cc
//
//       Concrete class derived from G4VGammaDeexcitation
//
//
#include "G4ContinuumGammaDeexcitation.hh"

#include "G4Gamma.hh"
#include "G4ContinuumGammaTransition.hh"
#include "G4NuclearLevelManager.hh"
#include "G4NuclearLevelStore.hh"
#include "G4Fragment.hh"      
#include "G4ConstantLevelDensityParameter.hh"

G4ContinuumGammaDeexcitation::G4ContinuumGammaDeexcitation()
  : nucleusZ(0), nucleusA(0), levelManager(0), ctransition(0)
{
  store = G4NuclearLevelStore::GetInstance();
}

G4ContinuumGammaDeexcitation::~G4ContinuumGammaDeexcitation() 
{}

G4bool G4ContinuumGammaDeexcitation::CanDoTransition(G4Fragment* nucleus) 
{
  G4int Z = nucleus->GetZ_asInt();
  G4int A = nucleus->GetA_asInt();
  G4double excitation = nucleus->GetExcitationEnergy();

  if (excitation <= _tolerance) {
    if (_verbose > 1) { 
      G4cout << "G4ContinuumGammaDeexcitation::CanDoTransition fails; Z= " << Z
             << " A= " << A << " Eex(meV)= " << excitation << G4endl;
    }
    return false;
  }

  if (nucleusA != A || nucleusZ != Z) {
    levelManager = store->GetManager(Z,A);
    nucleusA = A;
    nucleusZ = Z;
  }

  if (_verbose > 1) {
    G4cout << "G4ContinuumGammaDeexcitation: "
           << " Z= " << Z << "  A= " << A << " Eex= " << excitation
           << G4endl;
  }
  if (levelManager && excitation <= levelManager->MaxLevelEnergy() + _tolerance) {
    if (_verbose > 0) {
      G4cout << "G4ContinuumGammaDeexcitation::CanDoTransition -  Excitation " 
             << excitation << " below max discrete level " 
             << levelManager->MaxLevelEnergy() << G4endl;
    }
    return false;
  }

  if(!ctransition) {
    ctransition = 
      new G4ContinuumGammaTransition(levelManager,Z,A,excitation,_verbose);
    _transition = ctransition;
  } else {
    ctransition->Update(levelManager,Z,A,excitation);
  }

  if (_verbose > 1) {
    G4cout <<"G4ContinuumGammaDeexcitation::CanDoTransition: " 
           << " Eex(MeV)= " << excitation 
           << " Emax(MeV)= " << levelManager->MaxLevelEnergy()
           << " Z= " << Z << " A= " << A << G4endl;
  }
  return true;
}