Geant4  10.01.p03
G4WilsonRadius.cc
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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 //
61 //
62 #include "G4WilsonRadius.hh"
63 #include "G4SystemOfUnits.hh"
64 
66 //
68 {
69  G4double r0 = 0.84*fermi;
70  r0sq = r0 * r0;
71  factor = std::sqrt(5.0/3.0) * fermi;
72  third = 1.0 / 3.0;
73 }
75 //
77 {;}
79 //
81 {
82  G4double radius;
83  if (A > 26.0)
84  radius = factor * (0.84*std::pow(A,third) + 0.55);
85  else
86  {
87  // this was changed from just G4double to static const G4double
88  // to make sure that time wasn't being wasted on every call reloading a stack variable
89  // by MHM 20050119
90  static const G4double r[27] = {0.0, 0.85, 2.095, 1.976, 1.671, 1.986,
91  2.57, 2.41, 2.23, 2.519, 2.45,
92  2.42, 2.471, 2.440, 2.58, 2.611,
93  2.730, 2.662, 2.727, 2.9, 3.040,
94  2.867, 2.969, 2.94, 3.075, 3.11,
95  3.06};
96  radius = factor * r[(G4int) (A+0.4)];
97  }
98  return radius;
99 }
101 //
103 {
105  return 1.29*std::sqrt(r*r-r0sq);
106 }
108 //
G4double GetWilsonRMSRadius(G4double A)
int G4int
Definition: G4Types.hh:78
static const G4double A[nN]
double G4double
Definition: G4Types.hh:76
static const double fermi
Definition: G4SIunits.hh:93
const G4double r0
G4double GetWilsonRadius(G4double A)