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: G4SmpNuDistDataPu239.cc,v 1.3 2007/06/01 18:30:38 dennis Exp $ |
---|
57 | // |
---|
58 | |
---|
59 | #include <cmath> |
---|
60 | #include "G4fissionEvent.hh" |
---|
61 | |
---|
62 | G4int G4fissionEvent::G4SmpNuDistDataPu239(G4double erg) { |
---|
63 | |
---|
64 | /* |
---|
65 | Description |
---|
66 | Sample Number of Neutrons from fission in Pu-239 using |
---|
67 | Zucker and Holden's tabulated data for Pu-239 |
---|
68 | */ |
---|
69 | |
---|
70 | /* |
---|
71 | Input |
---|
72 | erg - incident neutron energy |
---|
73 | Output |
---|
74 | G4SmpNuDistDataPu239 - sampled multiplicity |
---|
75 | |
---|
76 | */ |
---|
77 | |
---|
78 | G4double cpnu; |
---|
79 | G4double pnu[8] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0}; |
---|
80 | G4double eng; |
---|
81 | G4double r; |
---|
82 | |
---|
83 | /* |
---|
84 | Check if energy is within the range of experimental values |
---|
85 | */ |
---|
86 | if (erg > 10) eng=10.; |
---|
87 | else eng=erg; |
---|
88 | |
---|
89 | r=fisslibrng(); |
---|
90 | |
---|
91 | /* |
---|
92 | Pu-239 nu distribution |
---|
93 | */ |
---|
94 | if (eng <= 5.0) pnu[0] = 0.0108826e0 - 0.00207694e0*eng |
---|
95 | - 6.5e-4*std::pow(eng,2) + 4.023e-4*std::pow(eng,3) |
---|
96 | - 7.93e-5*std::pow(eng,4) + 5.53666667e-6*std::pow(eng,5); |
---|
97 | if (eng > 5 && eng <= 10) pnu[0] = 0.078606e0 - 5.17531e-2*eng |
---|
98 | + 1.42034e-2*std::pow(eng,2) - 1.96292e-3*std::pow(eng,3) |
---|
99 | + 1.34512e-4*std::pow(eng,4) - 3.63416e-6*std::pow(eng,5); |
---|
100 | if (r <= pnu[0]) return 0; |
---|
101 | |
---|
102 | |
---|
103 | if (eng <= 5.0) pnu[1] = 0.0994916e0 - 0.01979542e0*eng |
---|
104 | - 0.00236583e0*std::pow(eng,2) + 0.0020581e0*std::pow(eng,3) |
---|
105 | - 4.14016667e-4*std::pow(eng,4) + 2.85666667e-5*std::pow(eng,5); |
---|
106 | if (eng > 5 && eng <= 10) pnu[1] = 0.10052e0 - 2.61361e-2*eng |
---|
107 | + 3.78355e-3*std::pow(eng,2) - 3.70667e-4*std::pow(eng,3) |
---|
108 | + 1.95458e-5*std::pow(eng,4) - 3.87499e-7*std::pow(eng,5); |
---|
109 | cpnu=pnu[0]+pnu[1]; |
---|
110 | if (r <= cpnu) return 1; |
---|
111 | |
---|
112 | |
---|
113 | if (eng <= 5.0) pnu[2] = 0.2748898e0 - 0.01565248e0*eng |
---|
114 | - 0.00749681e0*std::pow(eng,2) + 0.00217121e0*std::pow(eng,3) |
---|
115 | - 3.13041667e-4*std::pow(eng,4) + 1.88183333e-5*std::pow(eng,5); |
---|
116 | if (eng > 5 && eng <= 10) pnu[2] = 0.282487e0 - 0.0261342e0*eng |
---|
117 | - 1.16895e-3*std::pow(eng,2) + 1.9888e-4*std::pow(eng,3) |
---|
118 | - 6.41257e-6*std::pow(eng,4) + 1.02502e-7*std::pow(eng,5); |
---|
119 | cpnu=cpnu+pnu[2]; |
---|
120 | if (r <= cpnu) return 2; |
---|
121 | |
---|
122 | if (eng <= 5.0) pnu[3] = 0.3269196e0 + 0.00428312e0*eng |
---|
123 | - 0.00189322e0*std::pow(eng,2) - 4.31925001e-4*std::pow(eng,3) |
---|
124 | + 1.18466667e-4*std::pow(eng,4) - 9.04166668e-6*std::pow(eng,5); |
---|
125 | if (eng > 5 && eng <= 10) pnu[3] = 0.329058e0 + 4.023e-3*eng |
---|
126 | - 3.06402e-3*std::pow(eng,2) + 2.2628e-4*std::pow(eng,3) |
---|
127 | - 1.50875e-5*std::pow(eng,4) + 4.39168e-7*std::pow(eng,5); |
---|
128 | cpnu=cpnu+pnu[3]; |
---|
129 | if (r <= cpnu) return 3; |
---|
130 | |
---|
131 | if (eng <= 5.0) pnu[4] = 0.2046061e0 + 0.02633899e0*eng |
---|
132 | + 0.0041514e0*std::pow(eng,2) - 0.00275542e0*std::pow(eng,3) |
---|
133 | + 5.0325e-4*std::pow(eng,4) - 3.32158333e-5*std::pow(eng,5); |
---|
134 | if (eng > 5 && eng <= 10) pnu[4] = 0.18992e0 + 4.55188e-2*eng |
---|
135 | - 7.06316e-3*std::pow(eng,2) + 7.29916e-4*std::pow(eng,3) |
---|
136 | - 4.71791e-5*std::pow(eng,4) + 1.185e-6*std::pow(eng,5); |
---|
137 | cpnu=cpnu+pnu[4]; |
---|
138 | if (r <= cpnu) return 4; |
---|
139 | |
---|
140 | if (eng <= 5.0) pnu[5] = 0.0726834e0 + 0.00116043e0*eng |
---|
141 | + 0.007572e0*std::pow(eng,2) - 0.00161972e0*std::pow(eng,3) |
---|
142 | + 2.3545e-4*std::pow(eng,4) - 1.546e-5*std::pow(eng,5); |
---|
143 | if (eng > 5 && eng <= 10) pnu[5] = 0.0779212e0 - 1.35849e-3*eng |
---|
144 | + 6.68583e-3*std::pow(eng,2) - 7.98649e-4*std::pow(eng,3) |
---|
145 | + 4.88625e-5*std::pow(eng,4) - 1.54167e-6*std::pow(eng,5); |
---|
146 | cpnu=cpnu+pnu[5]; |
---|
147 | if (r <= cpnu) return 5; |
---|
148 | |
---|
149 | if (eng <= 5.0) pnu[6] = 0.0097282e0 + 0.00494589e0*eng |
---|
150 | + 0.00115294e0*std::pow(eng,2) - 3.25191667e-4*std::pow(eng,3) |
---|
151 | + 6.00083333e-5*std::pow(eng,4) - 3.745e-6*std::pow(eng,5); |
---|
152 | if (eng > 5 && eng <= 10) pnu[6] = 7.85432e-3 + 7.33182e-3*eng |
---|
153 | - 2.03705e-4*std::pow(eng,2) + 8.73787e-5*std::pow(eng,3) |
---|
154 | - 4.24164e-6*std::pow(eng,4) + 2.37499e-7*std::pow(eng,5); |
---|
155 | cpnu=cpnu+pnu[6]; |
---|
156 | if (r <= cpnu) return 6; |
---|
157 | |
---|
158 | if (eng <= 5.0) pnu[7] = 6.301e-4 + 1.10666667e-4*eng |
---|
159 | + 4.28016667e-4*std::pow(eng,2) + 1.12041667e-5*std::pow(eng,3) |
---|
160 | - 4.31666667e-6*std::pow(eng,4) + 3.29166667e-7*std::pow(eng,5); |
---|
161 | if (eng > 5 && eng <= 10) pnu[7] = 1.5323e-3 - 7.91857e-4*eng |
---|
162 | + 8.01017e-4*std::pow(eng,2) - 6.82833e-5*std::pow(eng,3) |
---|
163 | + 4.38333e-6*std::pow(eng,4) - 6.0e-8*std::pow(eng,5); |
---|
164 | cpnu=cpnu+pnu[7]; |
---|
165 | if (r <= cpnu) return 7; |
---|
166 | else return 8; |
---|
167 | } |
---|