00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 #ifndef G4NeutronHPEvapSpectrum_h 00030 #define G4NeutronHPEvapSpectrum_h 1 00031 00032 #include <fstream> 00033 #include <CLHEP/Units/SystemOfUnits.h> 00034 00035 #include "globals.hh" 00036 #include "G4ios.hh" 00037 #include "Randomize.hh" 00038 #include "G4NeutronHPVector.hh" 00039 #include "G4VNeutronHPEDis.hh" 00040 00041 // we will need a List of these .... one per term. 00042 00043 class G4NeutronHPEvapSpectrum : public G4VNeutronHPEDis 00044 { 00045 public: 00046 G4NeutronHPEvapSpectrum() 00047 { 00048 } 00049 ~G4NeutronHPEvapSpectrum() 00050 { 00051 } 00052 00053 inline void Init(std::ifstream & aDataFile) 00054 { 00055 theFractionalProb.Init(aDataFile); 00056 theThetaDist.Init(aDataFile); 00057 theXDist.Init(aDataFile); 00058 } 00059 00060 inline G4double GetFractionalProbability(G4double anEnergy) 00061 { 00062 return theFractionalProb.GetY(anEnergy); 00063 } 00064 00065 inline G4double Sample(G4double anEnergy) 00066 { 00067 // when this is called, theFractionalProb was used, and 'k' is sorted out already. 00068 G4double x = theXDist.Sample(); 00069 G4double theta = theThetaDist.GetY(anEnergy); 00070 G4double result = x*theta; 00071 return result*CLHEP::eV; 00072 } 00073 00074 private: 00075 00076 G4NeutronHPVector theFractionalProb; 00077 00078 G4NeutronHPVector theThetaDist; 00079 G4NeutronHPVector theXDist; 00080 00081 }; 00082 00083 #endif