Gabriele Cosmo
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4NeutronHPWattSpectrum.hh,v 1.11 2006/06/29 20:49:39 gunter Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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#ifndef G4NeutronHPWattSpectrum_h
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#define G4NeutronHPWattSpectrum_h 1
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#include "globals.hh"
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#include "G4NeutronHPVector.hh"
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#include "Randomize.hh"
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#include "G4ios.hh"
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#include <fstream>
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#include "G4VNeutronHPEDis.hh"
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// we will need a List of these .... one per term.
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class G4NeutronHPWattSpectrum : public G4VNeutronHPEDis
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{
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public:
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G4NeutronHPWattSpectrum()
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{
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expm1 = std::exp(-1.);
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}
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~G4NeutronHPWattSpectrum()
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{
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}
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inline void Init(std::ifstream & aDataFile)
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{
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theFractionalProb.Init(aDataFile, eV);
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theApar.Init(aDataFile, eV);
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theBpar.Init(aDataFile, eV);
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}
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inline G4double GetFractionalProbability(G4double anEnergy)
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{
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return theFractionalProb.GetY(anEnergy);
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}
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G4double Sample(G4double anEnergy);
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private:
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inline G4double Watt(G4double anEnergy, G4double a, G4double b)
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{
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G4double energy = anEnergy/eV;
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G4double result = std::exp(-energy/a)*std::sinh(std::sqrt(b*energy));
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return result;
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}
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private:
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G4double expm1;
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G4NeutronHPVector theFractionalProb;
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G4NeutronHPVector theApar;
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G4NeutronHPVector theBpar;
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};
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#endif
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