G4ParticleHPEvapSpectrum.hh

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// P. Arce, June-2014 Conversion neutron_hp to particle_hp
//
#ifndef G4ParticleHPEvapSpectrum_h
#define G4ParticleHPEvapSpectrum_h 1
 
#include "G4ParticleHPVector.hh"
#include "G4VParticleHPEDis.hh"
#include "G4ios.hh"
#include "Randomize.hh"
#include "globals.hh"
 
#include <CLHEP/Units/SystemOfUnits.h>
 
#include <fstream>
 
// we will need a List of these .... one per term.
 
class G4ParticleHPEvapSpectrum : public G4VParticleHPEDis
{
  public:
    G4ParticleHPEvapSpectrum() = default;
    ~G4ParticleHPEvapSpectrum() override = default;
 
    inline void Init(std::istream& aDataFile) override
    {
      theFractionalProb.Init(aDataFile);
      theThetaDist.Init(aDataFile);
      theXDist.Init(aDataFile);
    }
 
    inline G4double GetFractionalProbability(G4double anEnergy) override
    {
      return theFractionalProb.GetY(anEnergy);
    }
 
    inline G4double Sample(G4double anEnergy) override
    {
      // when this is called, theFractionalProb was used, and 'k' is sorted out already.
      G4double x = theXDist.Sample();
      G4double theta = theThetaDist.GetY(anEnergy);
      G4double result = x * theta;
      return result * CLHEP::eV;
    }
 
  private:
    G4ParticleHPVector theFractionalProb;
 
    G4ParticleHPVector theThetaDist;
    G4ParticleHPVector theXDist;
};
 
#endif