| 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 // $Id: $
>> 28 //
>> 29 // ---------------------------------------------------------------
>> 30 //
26 // G4ILawForceFreeFlight 31 // G4ILawForceFreeFlight
27 // 32 //
28 // Class Description: 33 // Class Description:
>> 34 // A G4VBiasingInteractionLaw representing the "interaction" law
>> 35 // for a force free flight, ie, a particle which does not interact.
>> 36 // It is a limit case for which the non-interaction probability over
>> 37 // a segment is always 1, and the effective cross-section always
>> 38 // zero.
>> 39 // This singular behavior is signaled by the IsSingular()
>> 40 // method returning always true.
29 // 41 //
30 // A G4VBiasingInteractionLaw representing the << 42 // ---------------------------------------------------------------
31 // for a force free flight, ie, a particle whi << 43 // 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 44 #ifndef G4ILawForceFreeFlight_hh
40 #define G4ILawForceFreeFlight_hh 1 45 #define G4ILawForceFreeFlight_hh 1
41 46
42 #include "G4VBiasingInteractionLaw.hh" 47 #include "G4VBiasingInteractionLaw.hh"
43 48
44 class G4ILawForceFreeFlight : public G4VBiasin 49 class G4ILawForceFreeFlight : public G4VBiasingInteractionLaw
45 { 50 {
46 public: << 51 public:
47 << 52 G4ILawForceFreeFlight(G4String name = "forceFreeFlightLaw");
48 G4ILawForceFreeFlight(const G4String& name << 53 virtual ~G4ILawForceFreeFlight();
49 virtual ~G4ILawForceFreeFlight(); <<
50 54
51 virtual G4double ComputeEffectiveCrossSect << 55 public:
52 virtual G4double ComputeNonInteractionProb << 56 virtual G4double ComputeEffectiveCrossSectionAt(G4double length) const;
53 << 57 virtual G4double ComputeNonInteractionProbabilityAt(G4double length) const;
54 // -- sample the distribution << 58 // -- sample the distribution
55 virtual G4double SampleInteractionLength( << 59 virtual G4double SampleInteractionLength();
56 // -- move by true path length, this posit << 60 // -- move by true path length, this position becomes the new initial point
57 virtual G4double UpdateInteractionLengthFo << 61 virtual G4double UpdateInteractionLengthForStep(G4double truePathLength);
58 virtual G4bool IsSingular() const { return << 62 virtual G4bool IsSingular() const {return true;}
59 }; 63 };
60 64
61 #endif 65 #endif
62 66