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35 //
36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
37 //
38 // MODULE: G4WilsonRadius.cc
39 //
40 // Version: B.1
41 // Date: 15/04/04
42 // Author: P R Truscott
43 // Organisation: QinetiQ Ltd, UK
44 // Customer: ESA/ESTEC, NOORDWIJK
45 // Contract: 17191/03/NL/LvH
46 //
47 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
48 //
49 // CHANGE HISTORY
50 // --------------
51 //
52 // 6 October 2003, P R Truscott, QinetiQ Ltd, UK
53 // Created.
54 //
55 // 15 March 2004, P R Truscott, QinetiQ Ltd, UK
56 // Beta release
57 //
58 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
59 //
60 ////////////////////////////////////////////////////////////////////////////////
61 //
62 #include "G4WilsonRadius.hh"
63 #include "G4SystemOfUnits.hh"
64 #include "G4Pow.hh"
65
66 ////////////////////////////////////////////////////////////////////////////////
67 //
68 G4WilsonRadius::G4WilsonRadius ()
69 {
70 G4double r0 = 0.84*fermi;
71 r0sq = r0 * r0;
72 factor = std::sqrt(5.0/3.0) * fermi;
73 third = 1.0 / 3.0;
74 }
75 ////////////////////////////////////////////////////////////////////////////////
76 //
77 G4WilsonRadius::~G4WilsonRadius ()
78 {;}
79 ////////////////////////////////////////////////////////////////////////////////
80 //
81 G4double G4WilsonRadius::GetWilsonRMSRadius (G4double A)
82 {
83 G4double radius;
84 if (A > 26.0)
85 radius = factor * (0.84*G4Pow::GetInstance()->A13(A) + 0.55);
86 else
87 {
88 // this was changed from just G4double to static const G4double
89 // to make sure that time wasn't being wasted on every call reloading a stack variable
90 // by MHM 20050119
91 static const G4double r[27] = {0.0, 0.85, 2.095, 1.976, 1.671, 1.986,
92 2.57, 2.41, 2.23, 2.519, 2.45,
93 2.42, 2.471, 2.440, 2.58, 2.611,
94 2.730, 2.662, 2.727, 2.9, 3.040,
95 2.867, 2.969, 2.94, 3.075, 3.11,
96 3.06};
97 radius = factor * r[(G4int) (A+0.4)];
98 }
99 return radius;
100 }
101 ////////////////////////////////////////////////////////////////////////////////
102 //
103 G4double G4WilsonRadius::GetWilsonRadius (G4double A)
104 {
105 G4double r = GetWilsonRMSRadius(A);
106 return 1.29*std::sqrt(r*r-r0sq);
107 }
108 ////////////////////////////////////////////////////////////////////////////////
109 //
110