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geant4/source/processes/hadronic/models/neutron_hp/include/G4NeutronHPDeExGammas.hh
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// This code implementation is the intellectual property of
// neutron_hp -- header file
// J.P. Wellisch, Nov-1996
// A prototype of the low energy neutron transport model.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4NeutronHPDeExGammas.hh,v 1.4 1999/12/15 14:53:11 gunter Exp $
// GEANT4 tag $Name: geant4-03-00 $
//
#ifndef G4NeutronHPDeExGammas_h
#define G4NeutronHPDeExGammas_h 1
#include "globals.hh"
#include "G4ios.hh"
#include "g4std/fstream"
#include "G4ReactionProductVector.hh"
#include "G4Gamma.hh"
#include "G4NeutronHPLevel.hh"
#include "G4NeutronHPGamma.hh"
#include "G4ReactionProduct.hh"
class G4NeutronHPDeExGammas
{
public:
G4NeutronHPDeExGammas()
{
levelStart = NULL;
levelSize = NULL;
nLevels = 0;
theLevels = NULL;
}
~G4NeutronHPDeExGammas()
{
if(levelStart!=NULL) delete [] levelStart;
if(levelSize!=NULL) delete [] levelSize;
if(theLevels!=NULL) delete [] theLevels;
}
void Init(G4std::ifstream & aDataFile);
inline G4ReactionProductVector * GetDecayGammas(G4int aLevel)
{
if(aLevel>nLevels-1 || aLevel<0) return NULL;
if(nLevels==0) return new G4ReactionProductVector();
G4ReactionProductVector * result = new G4ReactionProductVector;
G4DynamicParticleVector * theResult;
theResult = theLevels[aLevel]. GetDecayGammas();
G4ReactionProduct * theCurrent;
G4int i;
for(i=0; i<theResult->length(); i++)
{
theCurrent = new G4ReactionProduct;
*theCurrent = *(theResult->at(i));
delete theResult->at(i);
G4double costheta = 2.*G4UniformRand()-1;
G4double theta = acos(costheta);
G4double phi = twopi*G4UniformRand();
G4double sinth = sin(theta);
G4double en = theCurrent->GetTotalMomentum();
G4ThreeVector temp(en*sinth*cos(phi), en*sinth*sin(phi), en*costheta );
theCurrent->SetMomentum( temp ) ;
result->insert(theCurrent);
}
delete theResult;
return result;
}
inline G4NeutronHPLevel * GetLevel(G4int i)
{
if(i>nLevels-1) return NULL;
return theLevels+i;
}
inline G4int GetNumberOfLevels() { return nLevels; }
inline G4double GetLevelEnergy(G4int aLevel)
{
if(aLevel>nLevels-1 || aLevel<0) return 0;
G4double result = theLevels[aLevel].GetLevelEnergy();
return result;
}
private:
G4int * levelStart;
G4int * levelSize;
G4int nLevels;
G4NeutronHPLevel * theLevels;
};
#endif