| Geant4 Cross Reference |
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 //
27 //
28 // --------------------------------------------------------------------
29 // GEANT4 class header file
30 //
31 // Class Description:
32 // A clipboard for communicating between quantum entangled photons
33 // from e+ annihilation. Applies only to the two-gamma decay from the
34 // JP=0- state of e+e-, para-positronium. (This is the dominant process
35 // in materials such as human tissue, since the ortho-positronium JP=1-
36 // state, initially more likely, is "picked off" by a near-by electron
37 // and turned into para-positronium, because it has the much shorter
38 // meanlife.)
39 // Also applies to pi zero (JP=0-).
40 //
41 // ------------------ G4eplusAnnihilationEntanglementClipBoard ------------------
42 //
43 // Author: J.Allison, May 2017
44 //
45 // --------------------------------------------------------------------
46
47 // This is a concrete class based on G4VEntanglementClipBoard. Information
48 // specific to this type of entanglement can be posted here. See
49 // G4VEntanglementClipBoard.hh for more detail on how to use this class.
50
51 #ifndef G4eplusAnnihilationEntanglementClipBoard_hh
52 #define G4eplusAnnihilationEntanglementClipBoard_hh
53
54 #include "G4VEntanglementClipBoard.hh"
55
56 class G4eplusAnnihilationEntanglementClipBoard
57 : public G4VEntanglementClipBoard
58 {
59 public:
60 G4eplusAnnihilationEntanglementClipBoard()
61 : fComptonCosTheta1(0.)
62 , fComptonPhi1(0.)
63 {}
64 ~G4eplusAnnihilationEntanglementClipBoard() {}
65
66 // Cos(theta) and phi of the first Compton scattering of the first photon
67 void SetComptonCosTheta1(G4double cosTheta1) {fComptonCosTheta1 = cosTheta1;}
68 void SetComptonPhi1(G4double phi1) {fComptonPhi1 = phi1;}
69 G4double GetComptonCosTheta1() const {return fComptonCosTheta1;}
70 G4double GetComptonPhi1() const {return fComptonPhi1;}
71
72 protected:
73 // Cos(theta) and phi of the first Compton scattering of the first photon
74 G4double fComptonCosTheta1, fComptonPhi1;
75 };
76
77 #endif
78