00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * * 00021 // * Parts of this code which have been developed by QinetiQ Ltd * 00022 // * under contract to the European Space Agency (ESA) are the * 00023 // * intellectual property of ESA. Rights to use, copy, modify and * 00024 // * redistribute this software for general public use are granted * 00025 // * in compliance with any licensing, distribution and development * 00026 // * policy adopted by the Geant4 Collaboration. This code has been * 00027 // * written by QinetiQ Ltd for the European Space Agency, under ESA * 00028 // * contract 17191/03/NL/LvH (Aurora Programme). * 00029 // * * 00030 // * By using, copying, modifying or distributing the software (or * 00031 // * any work based on the software) you agree to acknowledge its * 00032 // * use in resulting scientific publications, and indicate your * 00033 // * acceptance of all terms of the Geant4 Software license. * 00034 // ******************************************************************** 00035 // 00036 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 00037 // 00038 // MODULE: G4WilsonRadius.cc 00039 // 00040 // Version: B.1 00041 // Date: 15/04/04 00042 // Author: P R Truscott 00043 // Organisation: QinetiQ Ltd, UK 00044 // Customer: ESA/ESTEC, NOORDWIJK 00045 // Contract: 17191/03/NL/LvH 00046 // 00047 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 00048 // 00049 // CHANGE HISTORY 00050 // -------------- 00051 // 00052 // 6 October 2003, P R Truscott, QinetiQ Ltd, UK 00053 // Created. 00054 // 00055 // 15 March 2004, P R Truscott, QinetiQ Ltd, UK 00056 // Beta release 00057 // 00058 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 00059 // 00061 // 00062 #include "G4WilsonRadius.hh" 00063 #include "G4SystemOfUnits.hh" 00064 00066 // 00067 G4WilsonRadius::G4WilsonRadius () 00068 { 00069 G4double r0 = 0.84*fermi; 00070 r0sq = r0 * r0; 00071 factor = std::sqrt(5.0/3.0) * fermi; 00072 third = 1.0 / 3.0; 00073 } 00075 // 00076 G4WilsonRadius::~G4WilsonRadius () 00077 {;} 00079 // 00080 G4double G4WilsonRadius::GetWilsonRMSRadius (G4double A) 00081 { 00082 G4double radius; 00083 if (A > 26.0) 00084 radius = factor * (0.84*std::pow(A,third) + 0.55); 00085 else 00086 { 00087 // this was changed from just G4double to static const G4double 00088 // to make sure that time wasn't being wasted on every call reloading a stack variable 00089 // by MHM 20050119 00090 static const G4double r[27] = {0.0, 0.85, 2.095, 1.976, 1.671, 1.986, 00091 2.57, 2.41, 2.23, 2.519, 2.45, 00092 2.42, 2.471, 2.440, 2.58, 2.611, 00093 2.730, 2.662, 2.727, 2.9, 3.040, 00094 2.867, 2.969, 2.94, 3.075, 3.11, 00095 3.06}; 00096 radius = factor * r[(G4int) (A+0.4)]; 00097 } 00098 return radius; 00099 } 00101 // 00102 G4double G4WilsonRadius::GetWilsonRadius (G4double A) 00103 { 00104 G4double r = GetWilsonRMSRadius(A); 00105 return 1.29*std::sqrt(r*r-r0sq); 00106 } 00108 //
1.4.7