include/Geant4/G4ParticleHPEvapSpectrum.hh

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0025 //
0026 //
0027 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
0028 //
0029 #ifndef G4ParticleHPEvapSpectrum_h
0030 #define G4ParticleHPEvapSpectrum_h 1
0031
0032 #include "G4ParticleHPVector.hh"
0033 #include "G4VParticleHPEDis.hh"
0034 #include "G4ios.hh"
0035 #include "Randomize.hh"
0036 #include "globals.hh"
0037
0038 #include <CLHEP/Units/SystemOfUnits.h>
0039
0040 #include <fstream>
0041
0042 // we will need a List of these .... one per term.
0043
0044 class G4ParticleHPEvapSpectrum : public G4VParticleHPEDis
0045 {
0046   public:
0047     G4ParticleHPEvapSpectrum() = default;
0048     ~G4ParticleHPEvapSpectrum() override = default;
0049
0050     inline void Init(std::istream& aDataFile) override
0051     {
0052       theFractionalProb.Init(aDataFile);
0053       theThetaDist.Init(aDataFile);
0054       theXDist.Init(aDataFile);
0055     }
0056
0057     inline G4double GetFractionalProbability(G4double anEnergy) override
0058     {
0059       return theFractionalProb.GetY(anEnergy);
0060     }
0061
0062     inline G4double Sample(G4double anEnergy) override
0063     {
0064       // when this is called, theFractionalProb was used, and 'k' is sorted out already.
0065       G4double x = theXDist.Sample();
0066       G4double theta = theThetaDist.GetY(anEnergy);
0067       G4double result = x * theta;
0068       return result * CLHEP::eV;
0069     }
0070
0071   private:
0072     G4ParticleHPVector theFractionalProb;
0073
0074     G4ParticleHPVector theThetaDist;
0075     G4ParticleHPVector theXDist;
0076 };
0077
0078 #endif