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 file |
---|
30 | // |
---|
31 | // |
---|
32 | // File name: G4VhShellCrossSection |
---|
33 | // |
---|
34 | // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) |
---|
35 | // |
---|
36 | // History: |
---|
37 | // ----------- |
---|
38 | // 20 Oct 2001 V.Ivanchenko 1st implementation |
---|
39 | // 24 Oct 2001 MGP Minor clean-up |
---|
40 | // 29 Oct 2001 VI Add delta energy |
---|
41 | // |
---|
42 | // ------------------------------------------------------------------- |
---|
43 | |
---|
44 | #include "G4VhShellCrossSection.hh" |
---|
45 | #include "Randomize.hh" |
---|
46 | |
---|
47 | G4VhShellCrossSection::G4VhShellCrossSection() |
---|
48 | { } |
---|
49 | |
---|
50 | |
---|
51 | G4VhShellCrossSection::~G4VhShellCrossSection() |
---|
52 | { } |
---|
53 | |
---|
54 | void G4VhShellCrossSection :: SetTotalCS(G4double) |
---|
55 | { |
---|
56 | } |
---|
57 | |
---|
58 | |
---|
59 | G4int G4VhShellCrossSection::SelectRandomShell(G4int Z, |
---|
60 | G4double incidentEnergy, |
---|
61 | G4double mass, |
---|
62 | G4double deltaEnergy) const |
---|
63 | // returns the shell ionized if the shell exists. If the shell is not counted, it returns -1 |
---|
64 | |
---|
65 | { |
---|
66 | std::vector<G4double> p = Probabilities(Z,incidentEnergy,mass,deltaEnergy); |
---|
67 | G4int shell = -1; |
---|
68 | size_t nShells = p.size(); |
---|
69 | G4double q = G4UniformRand(); |
---|
70 | for (size_t i=0; i<nShells; i++) { |
---|
71 | |
---|
72 | if (p[i] >= q) { |
---|
73 | shell = i; |
---|
74 | break; |
---|
75 | } |
---|
76 | q -= p[i]; |
---|
77 | } |
---|
78 | return shell; |
---|
79 | } |
---|
80 | |
---|
81 | |
---|