| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
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19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
27 // This software was developed by Lawrence Liv 27 // This software was developed by Lawrence Livermore National Laboratory.
28 // 28 //
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30 // modification, are permitted provided that t 30 // modification, are permitted provided that the following conditions are met:
31 // 31 //
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39 // 39 //
40 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``A 40 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
41 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 41 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
42 // MERCHANTABILITY AND FITNESS FOR A PARTICULA 42 // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
43 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DI 43 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGE 44 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
45 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES 45 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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47 // WHETHER IN CONTRACT, STRICT LIABILITY, OR T 47 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
48 // OTHERWISE) ARISING IN ANY WAY OUT OF THE US 48 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
49 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 49 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
50 // 50 //
51 // Copyright (c) 2006 The Regents of the Unive 51 // Copyright (c) 2006 The Regents of the University of California.
52 // All rights reserved. 52 // All rights reserved.
53 // UCRL-CODE-224807 53 // UCRL-CODE-224807
54 // 54 //
55 // 55 //
56 // 56 //
57 57
58 #include <cmath> 58 #include <cmath>
59 #include "G4fissionEvent.hh" 59 #include "G4fissionEvent.hh"
60 #include "G4PhysicalConstants.hh" 60 #include "G4PhysicalConstants.hh"
61 61
62 void G4fissionEvent::G4SmpIsoDir(G4double* cos 62 void G4fissionEvent::G4SmpIsoDir(G4double* cosdiru, G4double* cosdirv, G4double* cosdirw) {
63 63
64 /* 64 /*
65 Description 65 Description
66 determine the 3 direction cosines of a par 66 determine the 3 direction cosines of a particle emitted isotropically
67 */ 67 */
68 68
69 /* 69 /*
70 Input 70 Input
71 Output 71 Output
72 - 3 components of the direction co 72 - 3 components of the direction cosines
73 (cosdiru, cosdirv, cosdirw) 73 (cosdiru, cosdirv, cosdirw)
74 */ 74 */
75 75
76 G4double cospolang, sinpolang, phi; 76 G4double cospolang, sinpolang, phi;
77 77
78 // Choose emission angle isotropically, the 78 // Choose emission angle isotropically, then select polar angle direction cosine
79 cospolang = 1.-2.*fisslibrng(); 79 cospolang = 1.-2.*fisslibrng();
80 sinpolang = std::sqrt(1. - cospolang*cospol 80 sinpolang = std::sqrt(1. - cospolang*cospolang);
81 81
82 // Select an azimuthal angle uniformly on ( 82 // Select an azimuthal angle uniformly on (0,2*pi)
83 phi = twopi*fisslibrng(); 83 phi = twopi*fisslibrng();
84 *cosdiru = sinpolang * std::cos(phi); 84 *cosdiru = sinpolang * std::cos(phi);
85 *cosdirv = sinpolang * std::sin(phi); 85 *cosdirv = sinpolang * std::sin(phi);
86 *cosdirw = cospolang; 86 *cosdirw = cospolang;
87 } 87 }
88 88