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 // This software was developed by Lawrence Livermore National Laboratory. 00028 // 00029 // Redistribution and use in source and binary forms, with or without 00030 // modification, are permitted provided that the following conditions are met: 00031 // 00032 // 1. Redistributions of source code must retain the above copyright notice, 00033 // this list of conditions and the following disclaimer. 00034 // 2. Redistributions in binary form must reproduce the above copyright notice, 00035 // this list of conditions and the following disclaimer in the documentation 00036 // and/or other materials provided with the distribution. 00037 // 3. The name of the author may not be used to endorse or promote products 00038 // derived from this software without specific prior written permission. 00039 // 00040 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 00041 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00042 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 00043 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00044 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00045 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 00046 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00047 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 00048 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 00049 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00050 // 00051 // Copyright (c) 2006 The Regents of the University of California. 00052 // All rights reserved. 00053 // UCRL-CODE-224807 00054 // 00055 // 00056 // $Id: G4SmpGEng.cc 69860 2013-05-16 14:39:02Z gcosmo $ 00057 // 00058 00059 #include <cmath> 00060 #include "G4fissionEvent.hh" 00061 00062 G4double G4fissionEvent::G4SmpGEng() { 00063 00064 /* 00065 Description 00066 Sample energy spectrum for photons emitted by fission-induced reactions. 00067 The energy spectrum of the prompt fission gamma rays is obtained from 00068 Maienschein's measurements. 00069 */ 00070 00071 /* 00072 Input 00073 Return 00074 energy of photon emitted by neutron-induced fission 00075 */ 00076 00077 G4double r; 00078 /* 00079 Calculate the energy of photons emitted from fission 00080 */ 00081 r=fisslibrng(); 00082 00083 if (r == 0.0) return 0.085; 00084 00085 if (r <= 0.0001) return 0.0855+0.01692*(r/0.0001)-0.02401*std::pow(r/0.0001,2.)+0.01274*std::pow(r/0.0001,3.); 00086 00087 if (r > 0.0001 && r <= 0.01) return 0.09141 + 0.23846*((r-0.0001)/0.0099) 00088 - 1.75947*std::pow((r-.0001)/0.0099,2.) 00089 + 10.98611*std::pow((r-0.0001)/0.0099,3.) 00090 - 43.19181*std::pow((r-.0001)/0.0099,4.) 00091 +105.70005*std::pow((r-.0001)/.0099,5.) 00092 -160.72894*std::pow((r-.0001)/.0099,6.) 00093 +147.43399*std::pow((r-.0001)/.0099,7.) 00094 - 74.60043*std::pow((r-.0001)/0.0099,8.) 00095 + 15.97547*std::pow((r-.0001)/0.0099,9.); 00096 00097 if (r > 0.01 && r <= 0.1537) return 0.14486 + 0.40914*((r-.01)/.1437) 00098 - 1.28150*std::pow((r-0.01)/0.1437,2.) 00099 + 5.07377*std::pow((r-0.01)/0.1437,3.) 00100 -15.42031*std::pow((r-0.01)/0.1437,4.) 00101 +31.96346*std::pow((r-0.01)/0.1437,5.) 00102 -43.12605*std::pow((r-0.01)/0.1437,6.) 00103 +36.02908*std::pow((r-0.01)/0.1437,7.) 00104 -16.87185*std::pow((r-0.01)/0.1437,8.) 00105 + 3.37941*std::pow((r-0.01)/0.1437,9.); 00106 00107 if (r > 0.1537 && r <= 0.7114) return (-1./2.3)*std::log(0.71956*(0.1537-r)+0.50158); 00108 00109 if (r > 0.7114 && r <= 1.0) return (-1./1.1)*std::log(1.15292*(0.7114-r)+0.33287); 00110 // 00111 // Fall through 00112 // 00113 G4cout << " Random number out of range in SmpGEng " << G4endl; 00114 return -1.0; 00115 }