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1 // 2 // ******************************************************************** 3 // * License and Disclaimer * 4 // * * 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. * 10 // * * 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitation of liability. * 17 // * * 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************************************** 25 26 #ifndef G4IRTUtils_hh 27 #define G4IRTUtils_hh 28 29 #include "globals.hh" 30 #include <memory> 31 32 class G4ErrorFunction; 33 class G4IRTUtils { 34 35 public: 36 G4IRTUtils() = default; 37 ~G4IRTUtils() = default; 38 static G4double EffectiveDistance(const G4double& rc, 39 const G4double& r0); 40 41 static G4double GetKact(const G4double& obs, 42 const G4double& dif) 43 { 44 return (obs == 0 || dif == 0) ? 0 : dif * obs/(dif - obs); 45 } 46 47 static G4double GetRCutOff(); 48 static G4double GetRCutOff(G4double tCutOff); 49 static G4double GetDNADistanceCutOff(); 50 }; 51 52 53 54 #endif 55 56