1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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13 | // * work make any representation or warranty, express or implied, * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // This software was developed by Lawrence Livermore National Laboratory. |
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28 | // |
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29 | // Redistribution and use in source and binary forms, with or without |
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30 | // modification, are permitted provided that the following conditions are met: |
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31 | // |
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32 | // 1. Redistributions of source code must retain the above copyright notice, |
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33 | // this list of conditions and the following disclaimer. |
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34 | // 2. Redistributions in binary form must reproduce the above copyright notice, |
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35 | // this list of conditions and the following disclaimer in the documentation |
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36 | // and/or other materials provided with the distribution. |
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37 | // 3. The name of the author may not be used to endorse or promote products |
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38 | // derived from this software without specific prior written permission. |
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39 | // |
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40 | // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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41 | // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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42 | // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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43 | // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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44 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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45 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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46 | // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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47 | // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
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48 | // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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49 | // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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50 | // |
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51 | // Copyright (c) 2006 The Regents of the University of California. |
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52 | // All rights reserved. |
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53 | // UCRL-CODE-224807 |
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54 | // |
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55 | // |
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56 | // $Id: G4SmpSpNubarData.cc,v 1.1 2007/05/30 01:01:23 dennis Exp $ |
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57 | // |
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58 | |
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59 | #include "G4fissionEvent.hh" |
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60 | |
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61 | #define nSPfissNubarIso 18 |
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62 | |
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63 | G4double G4fissionEvent::G4SmpSpNubarData(G4int isotope) { |
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64 | |
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65 | /* |
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66 | Description |
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67 | Determine average number of neutrons from spontaneous fission for |
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68 | Th-232, |
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69 | U-232, U-233, U-234, U-235, U-236, U-238 |
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70 | Np-237, |
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71 | Pu-239, Pu-240, Pu-241, Pu-242 |
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72 | Am-241, |
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73 | Cm-242, Cm-244, |
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74 | Bk-249, |
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75 | Cf-252 |
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76 | Based on Ensslin's data. |
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77 | N. Ensslin, et.al., "Application Guide to Neutron Multiplicity Counting," |
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78 | LA-13422-M (November 1998) |
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79 | */ |
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80 | |
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81 | /* |
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82 | Input |
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83 | iso - isotope |
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84 | Output |
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85 | G4SmpSpNubarData - average number of neutrons |
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86 | -1. is the isotope has |
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87 | no nubar data |
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88 | */ |
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89 | |
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90 | G4int i; |
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91 | |
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92 | static G4int spzaid [nSPfissNubarIso] = { |
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93 | 90232, 92232, 92233, 92234, 92235, |
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94 | 92236, 92238, 93237, 94238, 94239, |
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95 | 94240, 94241, 94242, 95241, 96242, |
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96 | 96244, 97249, 98252 }; |
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97 | static G4double spnubar [nSPfissNubarIso] = { |
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98 | 2.14, 1.71, 1.76, 1.81, 1.86, |
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99 | 1.91, 2.01, 2.05, 2.21, 2.16, |
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100 | 2.156, 2.25, 2.145, 3.22, 2.54, |
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101 | 2.72, 3.40, 3.757 |
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102 | }; |
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103 | |
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104 | // Find nubar |
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105 | for (i=0; i<nSPfissNubarIso; i++) { |
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106 | if (isotope == spzaid[i]) { |
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107 | return spnubar[i]; |
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108 | } |
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109 | } |
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110 | // no nubar available for that isotope |
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111 | return -1.; |
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112 | } |
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