Geant4 Cross Reference |
1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer 3 // * License and Disclaimer * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. 9 // * include a list of copyright holders. * 10 // * 10 // * * 11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // >> 26 // >> 27 // >> 28 // --------------------------------------------------------------- >> 29 // 26 // G4ILawForceFreeFlight 30 // G4ILawForceFreeFlight 27 // 31 // 28 // Class Description: 32 // Class Description: >> 33 // A G4VBiasingInteractionLaw representing the "interaction" law >> 34 // for a force free flight, ie, a particle which does not interact. >> 35 // It is a limit case for which the non-interaction probability over >> 36 // a segment is always 1, and the effective cross-section always >> 37 // zero. >> 38 // This singular behavior is signaled by the IsSingular() >> 39 // method returning always true. 29 // 40 // 30 // A G4VBiasingInteractionLaw representing the << 41 // --------------------------------------------------------------- 31 // for a force free flight, ie, a particle whi << 42 // Initial version Nov. 2013 M. Verderi 32 // It is a limit case for which the non-intera << 33 // a segment is always 1, and the effective cr << 34 // zero. This singular behavior is signaled by << 35 // method returning always true. << 36 // << 37 // Author: Marc Verderi, November 2013. << 38 // ------------------------------------------- << 39 #ifndef G4ILawForceFreeFlight_hh 43 #ifndef G4ILawForceFreeFlight_hh 40 #define G4ILawForceFreeFlight_hh 1 44 #define G4ILawForceFreeFlight_hh 1 41 45 42 #include "G4VBiasingInteractionLaw.hh" 46 #include "G4VBiasingInteractionLaw.hh" 43 47 44 class G4ILawForceFreeFlight : public G4VBiasin 48 class G4ILawForceFreeFlight : public G4VBiasingInteractionLaw 45 { 49 { 46 public: << 50 public: 47 << 51 G4ILawForceFreeFlight(G4String name = "forceFreeFlightLaw"); 48 G4ILawForceFreeFlight(const G4String& name << 52 virtual ~G4ILawForceFreeFlight(); 49 virtual ~G4ILawForceFreeFlight(); << 50 53 51 virtual G4double ComputeEffectiveCrossSect << 54 public: 52 virtual G4double ComputeNonInteractionProb << 55 virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const; 53 << 56 virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const; 54 // -- sample the distribution << 57 // -- sample the distribution 55 virtual G4double SampleInteractionLength( << 58 virtual G4double SampleInteractionLength(); 56 // -- move by true path length, this posit << 59 // -- move by true path length, this position becomes the new initial point 57 virtual G4double UpdateInteractionLengthFo << 60 virtual G4double UpdateInteractionLengthForStep(G4double truePathLength); 58 virtual G4bool IsSingular() const { return << 61 virtual G4bool IsSingular() const {return true;} 59 }; 62 }; 60 63 61 #endif 64 #endif 62 65