[819] | 1 | // |
---|
| 2 | // ******************************************************************** |
---|
| 3 | // * License and Disclaimer * |
---|
| 4 | // * * |
---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
| 9 | // * include a list of copyright holders. * |
---|
| 10 | // * * |
---|
| 11 | // * Neither the authors of this software system, nor their employing * |
---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
---|
| 13 | // * work make any representation or warranty, express or implied, * |
---|
| 14 | // * regarding this software system or assume any liability for its * |
---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
---|
| 17 | // * * |
---|
| 18 | // * This code implementation is the result of the scientific and * |
---|
| 19 | // * technical work of the GEANT4 collaboration. * |
---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
---|
| 22 | // * use in resulting scientific publications, and indicate your * |
---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
| 24 | // ******************************************************************** |
---|
| 25 | // |
---|
| 26 | // |
---|
| 27 | // This software was developed by Lawrence Livermore National Laboratory. |
---|
| 28 | // |
---|
| 29 | // Redistribution and use in source and binary forms, with or without |
---|
| 30 | // modification, are permitted provided that the following conditions are met: |
---|
| 31 | // |
---|
| 32 | // 1. Redistributions of source code must retain the above copyright notice, |
---|
| 33 | // this list of conditions and the following disclaimer. |
---|
| 34 | // 2. Redistributions in binary form must reproduce the above copyright notice, |
---|
| 35 | // this list of conditions and the following disclaimer in the documentation |
---|
| 36 | // and/or other materials provided with the distribution. |
---|
| 37 | // 3. The name of the author may not be used to endorse or promote products |
---|
| 38 | // derived from this software without specific prior written permission. |
---|
| 39 | // |
---|
| 40 | // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
---|
| 41 | // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
---|
| 42 | // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
---|
| 43 | // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
---|
| 44 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
---|
| 45 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
---|
| 46 | // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
---|
| 47 | // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
---|
| 48 | // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
---|
| 49 | // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
---|
| 50 | // |
---|
| 51 | // Copyright (c) 2006 The Regents of the University of California. |
---|
| 52 | // All rights reserved. |
---|
| 53 | // UCRL-CODE-224807 |
---|
| 54 | // |
---|
| 55 | // |
---|
| 56 | // $Id: G4SmpNuDistDataU235.cc,v 1.3 2007/06/01 13:46:53 gcosmo Exp $ |
---|
| 57 | // |
---|
| 58 | |
---|
| 59 | #include <cmath> |
---|
| 60 | #include "G4fissionEvent.hh" |
---|
| 61 | |
---|
| 62 | G4int G4fissionEvent::G4SmpNuDistDataU235(G4double erg, G4int option) { |
---|
| 63 | |
---|
| 64 | /* |
---|
| 65 | Description |
---|
| 66 | Sample Number of Neutrons from fission in U-235 using probability |
---|
| 67 | distributions based on either |
---|
| 68 | (option 0) Zucker and Holden's tabulated data for U-235 |
---|
| 69 | (option 1) Zucker and Holden's tabulated data for U-235 and |
---|
| 70 | Gwin, Spencer and Ingle tabulated data for U-235 |
---|
| 71 | at thermal energies |
---|
| 72 | */ |
---|
| 73 | |
---|
| 74 | /* |
---|
| 75 | Input |
---|
| 76 | erg - incident neutron energy |
---|
| 77 | option - 0 for sampling Zucker and Holden probability distributions |
---|
| 78 | 1 for sampling probability distributions based on Zucker |
---|
| 79 | and Holden tabulated distributions as well as Gwin, |
---|
| 80 | Spencer and Ingle tabulated distributions at thermal |
---|
| 81 | energies |
---|
| 82 | Output |
---|
| 83 | G4SmpNuDistDataU235 - sampled multiplicity |
---|
| 84 | |
---|
| 85 | */ |
---|
| 86 | |
---|
| 87 | G4double cpnu; |
---|
| 88 | G4double pnu[] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 }; |
---|
| 89 | G4double eng; |
---|
| 90 | G4double r; |
---|
| 91 | |
---|
| 92 | /* |
---|
| 93 | Check if energy is within the range of experimental values |
---|
| 94 | */ |
---|
| 95 | if (erg > 10) eng=10.; |
---|
| 96 | else eng=erg; |
---|
| 97 | |
---|
| 98 | r=fisslibrng(); |
---|
| 99 | /* |
---|
| 100 | U-235 nu distribution |
---|
| 101 | */ |
---|
| 102 | if (option == 0) { |
---|
| 103 | if (eng <= 3.0) pnu[0]=0.0317223e0-9.67117e-3*eng+1.9726e-3*std::pow(eng,2)-2.33933e-4*std::pow(eng,3); |
---|
| 104 | if (eng > 3 && eng <= 7) pnu[0]=-1.24147e-2+2.52982e-2*eng-7.88108e-3*std::pow(eng,2)+9.10008e-4*std::pow(eng,3)-3.67208e-5*std::pow(eng,4); |
---|
| 105 | if (eng > 7 && eng <= 10) pnu[0]=6.31258e-2-1.89764e-2*eng+1.94475e-3*std::pow(eng,2)-6.74e-5*std::pow(eng,3); |
---|
| 106 | if (r <= pnu[0]) return 0; |
---|
| 107 | |
---|
| 108 | if (eng <= 4.0) pnu[1]=0.171707e0-0.0178305e0*eng+3.42286e-3*std::pow(eng,2)-2.1168e-3*std::pow(eng,3)+3.84226e-4*std::pow(eng,4)-1.44289e-5*std::pow(eng,5); |
---|
| 109 | if (eng > 4 && eng <= 7) pnu[1]=9.8633e-2+3.53323e-2*eng-1.15037e-2*std::pow(eng,2)+7.4e-4*std::pow(eng,3); |
---|
| 110 | if (eng > 7 && eng <= 10) pnu[1]=0.628295-0.180677*eng+1.80664e-2*std::pow(eng,2)-6.2015e-4*std::pow(eng,3); |
---|
| 111 | cpnu=pnu[0]+pnu[1]; |
---|
| 112 | if (r <= cpnu) return 1; |
---|
| 113 | |
---|
| 114 | if (eng <= 4.0) pnu[2]=0.336199e0-1.59569e-2*eng+2.78036e-3*std::pow(eng,2)-1.59278e-3*std::pow(eng,3)+2.21742e-4*std::pow(eng,4); |
---|
| 115 | if (eng > 4 && eng <= 8) pnu[2]=0.229153e0+5.27561e-2*eng-1.29288e-2*std::pow(eng,2)+5.67233e-4*std::pow(eng,3)+8.06667e-6*std::pow(eng,4); |
---|
| 116 | if (eng > 8 && eng <= 10) pnu[2]=-0.395206e0+0.227399e0*eng-2.86051e-2*std::pow(eng,2)+1.08196e-3*std::pow(eng,3); |
---|
| 117 | cpnu=cpnu+pnu[2]; |
---|
| 118 | if (r <= cpnu) return 2; |
---|
| 119 | |
---|
| 120 | if (eng <= 5.0) pnu[3]=0.30395461e0+0.01348261e0*eng-0.00262298e0*std::pow(eng,2)+1.99482407e-4*std::pow(eng,3); |
---|
| 121 | if (eng > 5 && eng <= 10) pnu[3]=0.10992355e0+0.09246839e0*eng-0.00885344e0*std::pow(eng,2)-7.60589252e-4*std::pow(eng,3)+1.50973591e-4*std::pow(eng,4)-6.20436503e-6*std::pow(eng,5); |
---|
| 122 | cpnu=cpnu+pnu[3]; |
---|
| 123 | if (r <= cpnu) return 3; |
---|
| 124 | |
---|
| 125 | if (eng <= 4.0) pnu[4]=0.126946e0+1.64489e-2*eng+2.44029e-3*std::pow(eng,2)-2.1019e-3*std::pow(eng,3)+8.50104e-4*std::pow(eng,4)-1.10127e-4*std::pow(eng,5); |
---|
| 126 | if (eng > 4 && eng <= 8) pnu[4]=0.263373e0-7.47799e-2*eng+2.0588e-2*std::pow(eng,2)-1.55132e-3*std::pow(eng,3)+3.025e-5*std::pow(eng,4); |
---|
| 127 | if (eng > 8 && eng <= 10) pnu[4]=-0.277491e0+0.157606e0*eng-1.38467e-2*std::pow(eng,2)+4.20357e-4*std::pow(eng,3); |
---|
| 128 | cpnu=cpnu+pnu[4]; |
---|
| 129 | if (r <= cpnu) return 4; |
---|
| 130 | |
---|
| 131 | if (eng <= 4.0) pnu[5]=0.0266793e0+9.05206e-3*eng-6.58754e-4*std::pow(eng,2)+6.26292e-4*std::pow(eng,3)-9.75958e-5*std::pow(eng,4); |
---|
| 132 | if (eng > 4 && eng <= 8) pnu[5]=0.0693092e0-1.46524e-2*eng+3.2841e-3*std::pow(eng,2)+1.50833e-4*std::pow(eng,3)-2.13e-5*std::pow(eng,4); |
---|
| 133 | if (eng > 8 && eng <= 10) pnu[5]=0.881442e0-0.271486e0*eng+3.15097e-2*std::pow(eng,2)-1.12095e-3*std::pow(eng,3); |
---|
| 134 | cpnu=cpnu+pnu[5]; |
---|
| 135 | if (r <= cpnu) return 5; |
---|
| 136 | |
---|
| 137 | |
---|
| 138 | if (eng <= 4.0) pnu[6]=0.0026322e0+2.44017e-4*eng+4.55992e-4*std::pow(eng,2)+1.25233e-4*std::pow(eng,3)-2.35417e-5*std::pow(eng,4); |
---|
| 139 | if (eng > 4 && eng <= 8) pnu[6]=-5.3989e-3+9.48298e-3*eng-2.95864e-3*std::pow(eng,2)+5.43025e-4*std::pow(eng,3)-2.75625e-5*std::pow(eng,4); |
---|
| 140 | if (eng > 8 && eng <= 10) pnu[6]=0.177058-5.57839e-2*eng+6.81359e-3*std::pow(eng,2)-2.35568e-4*std::pow(eng,3); |
---|
| 141 | cpnu=cpnu+pnu[6]; |
---|
| 142 | if (r <= cpnu) return 6; |
---|
| 143 | else return 7; |
---|
| 144 | |
---|
| 145 | } else if (option == 1) { |
---|
| 146 | if (eng <= 3.0) pnu[0]=0.0291000e0-4.836167e-3*eng-6.72500e-4*std::pow(eng,2)+2.076667e-4*std::pow(eng,3); |
---|
| 147 | if (eng > 3 && eng <= 7) pnu[0]=-1.23950e-2+2.52790e-2*eng-7.874333e-3*std::pow(eng,2)+9.09000e-4*std::pow(eng,3)-3.666667e-5*std::pow(eng,4); |
---|
| 148 | if (eng > 7 && eng <= 10) pnu[0]=6.328200e-2-1.903283e-2*eng+1.951500e-3*std::pow(eng,2)-6.766667e-5*std::pow(eng,3); |
---|
| 149 | if (r <= pnu[0]) return 0; |
---|
| 150 | |
---|
| 151 | if (eng <= 4.0) pnu[1]=0.166000e0-0.005591833e0*eng-5.624500e-3*std::pow(eng,2)+7.673333e-4*std::pow(eng,3)-2.00000e-6*std::pow(eng,4); |
---|
| 152 | if (eng > 4 && eng <= 7) pnu[1]=9.860600e-2+3.534733e-2*eng-1.150650e-2*std::pow(eng,2)+7.401667e-4*std::pow(eng,3); |
---|
| 153 | if (eng > 7 && eng <= 10) pnu[1]=0.628401e0-0.1807157e0*eng+1.807100e-2*std::pow(eng,2)-6.203333e-4*std::pow(eng,3); |
---|
| 154 | cpnu=pnu[0]+pnu[1]; |
---|
| 155 | if (r <= cpnu) return 1; |
---|
| 156 | |
---|
| 157 | if (eng <= 4.0) pnu[2]=0.336200e0-1.596058e-2*eng+2.783625e-3*std::pow(eng,2)-1.593917e-3*std::pow(eng,3)+2.21875e-4*std::pow(eng,4); |
---|
| 158 | if (eng > 4 && eng <= 8) pnu[2]=0.2292350e0+5.26925e-2*eng-1.291067e-2*std::pow(eng,2)+5.650000e-4*std::pow(eng,3)+8.166667e-6*std::pow(eng,4); |
---|
| 159 | if (eng > 8 && eng <= 10) pnu[2]=0.3838230e0-3.4439e-2*eng+6.0800e-4*std::pow(eng,2); |
---|
| 160 | cpnu=cpnu+pnu[2]; |
---|
| 161 | if (r <= cpnu) return 2; |
---|
| 162 | |
---|
| 163 | if (eng <= 4.0) pnu[3]=0.3074000e0+0.00794125e0*eng-0.0002580417e0*std::pow(eng,2)-1.875000e-5*std::pow(eng,3)-2.145833e-5*std::pow(eng,4); |
---|
| 164 | if (eng > 4 && eng <= 7) pnu[3]=0.3152270e0-2.623667e-3*eng+2.785000e-3*std::pow(eng,2)-3.273333e-4*std::pow(eng,3); |
---|
| 165 | if (eng > 7 && eng <= 10) pnu[3]=0.6476430e0-0.1046148e0*eng+1.181600e-2*std::pow(eng,2)-5.051667e-4*std::pow(eng,3); |
---|
| 166 | cpnu=cpnu+pnu[3]; |
---|
| 167 | if (r <= cpnu) return 3; |
---|
| 168 | |
---|
| 169 | if (eng <= 4.0) pnu[4]=0.133300e0+5.853750e-3*eng+6.200875e-3*std::pow(eng,2)-8.95250e-4*std::pow(eng,3)+1.36250e-5*std::pow(eng,4); |
---|
| 170 | if (eng > 4 && eng <= 7) pnu[4]=0.2379650e0-5.548167e-2*eng+1.517350e-2*std::pow(eng,2)-8.858333e-4*std::pow(eng,3); |
---|
| 171 | if (eng > 7 && eng <= 10) pnu[4]=-0.5408690e0+0.2461313e0*eng-2.372350e-2*std::pow(eng,2)+7.861667e-4*std::pow(eng,3); |
---|
| 172 | cpnu=cpnu+pnu[4]; |
---|
| 173 | if (r <= cpnu) return 4; |
---|
| 174 | |
---|
| 175 | if (eng <= 4.0) pnu[5]=0.025900e0+1.067450e-2*eng-1.794000e-3*std::pow(eng,2)+9.50500e-4*std::pow(eng,3)-1.3000e-4*std::pow(eng,4); |
---|
| 176 | if (eng > 4 && eng <= 7) pnu[5]=0.0871960e0-2.823683e-2*eng+7.0955e-3*std::pow(eng,2)-3.176667e-4*std::pow(eng,3); |
---|
| 177 | if (eng > 7 && eng <= 10) pnu[5]=-0.591650e0+0.2236360e0*eng-2.373100e-2*std::pow(eng,2)+9.25000e-4*std::pow(eng,3); |
---|
| 178 | cpnu=cpnu+pnu[5]; |
---|
| 179 | if (r <= cpnu) return 5; |
---|
| 180 | |
---|
| 181 | if (eng <= 4.0) pnu[6]=0.002100e0+1.35500e-3*eng-3.235833e-4*std::pow(eng,2)+3.48500e-4*std::pow(eng,3)-4.591667e-5*std::pow(eng,4); |
---|
| 182 | if (eng > 4 && eng <= 8) pnu[6]=1.767200e-2-8.055667e-3*eng+1.96650e-3*std::pow(eng,2)-6.283333e-5*std::pow(eng,3); |
---|
| 183 | if (eng > 8 && eng <= 10) pnu[6]=-0.2485310e0+8.72590e-2*eng-9.14550e-3*std::pow(eng,2)+3.555000e-4*std::pow(eng,3); |
---|
| 184 | cpnu=cpnu+pnu[6]; |
---|
| 185 | if (r <= cpnu) return 6; |
---|
| 186 | else return 7; |
---|
| 187 | } |
---|
| 188 | // |
---|
| 189 | // Fall through |
---|
| 190 | // |
---|
| 191 | |
---|
| 192 | G4cout << " SmpNuDistDataU235: unrecognized option = " << option << G4endl; |
---|
| 193 | return -1; |
---|
| 194 | |
---|
| 195 | } |
---|