Geant4  10.03.p02
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
G4VhShellCrossSection.cc
Go to the documentation of this file.
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 // $Id: G4UAtomicDeexcitation.cc,v 1.11
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 //
33 // File name: G4VhShellCrossSection
34 //
35 // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch)
36 //
37 // History:
38 // -----------
39 // 20 Oct 2001 V.Ivanchenko 1st implementation
40 // 24 Oct 2001 MGP Minor clean-up
41 // 29 Oct 2001 VI Add delta energy
42 //
43 // -------------------------------------------------------------------
44 
45 #include "G4VhShellCrossSection.hh"
46 #include "Randomize.hh"
47 
49 {}
50 
52 {}
53 
55 {}
56 
58  G4double incidentEnergy,
59  G4double mass,
60  G4double deltaEnergy,
61  const G4Material* mat)
62 // returns the shell ionized if the shell exists. If the shell is not counted, it returns -1
63 
64 {
65  std::vector<G4double> p = Probabilities(Z,incidentEnergy,mass,deltaEnergy,mat);
66  G4int shell = -1;
67  size_t nShells = p.size();
68  G4double q = G4UniformRand();
69  for (size_t i=0; i<nShells; i++) {
70 
71  if (p[i] >= q) {
72  shell = i;
73  break;
74  }
75  q -= p[i];
76  }
77  return shell;
78 }
79 
80 
const XML_Char * name
Definition: expat.h:151
const char * p
Definition: xmltok.h:285
int G4int
Definition: G4Types.hh:78
G4int SelectRandomShell(G4int Z, G4double incidentEnergy, G4double mass, G4double deltaEnergy, const G4Material *mat)
virtual std::vector< G4double > Probabilities(G4int Z, G4double incidentEnergy, G4double mass, G4double deltaEnergy, const G4Material *mat)=0
G4VhShellCrossSection(const G4String &xname="")
#define G4UniformRand()
Definition: Randomize.hh:97
virtual void SetTotalCS(G4double)
double G4double
Definition: G4Types.hh:76