Geant4  10.00.p03
G4Hydrogen.cc
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26 // $Id: G4Hydrogen.cc 74551 2013-10-14 12:59:14Z gcosmo $
27 //
28 // Author: Mathieu Karamitors
29 //
30 // History:
31 // -----------
32 // 10 Oct 2011 M.Karamitros created
33 //
34 // -------------------------------------------------------------------
35 
36 #include "G4Hydrogen.hh"
37 #include "G4PhysicalConstants.hh"
38 #include "G4SystemOfUnits.hh"
39 #include "G4ParticleTable.hh"
40 
41 // ######################################################################
42 // ### Hydrogen ###
43 // ######################################################################
44 /*G4ThreadLocal*/ G4Hydrogen* G4Hydrogen::theInstance = 0;
45 
47 {
48  if (theInstance !=0) return theInstance;
49  const G4String name = "H";
50  // search in particle table]
52  G4ParticleDefinition* anInstance = pTable->FindParticle(name);
53  if (anInstance ==0)
54  {
55  // create molecule
56  //
57  // G4MoleculeDefinition(G4String name,
58  // G4double mass,
59  // G4int electronsNumber,
60  // G4int electronicLevels,
61  // G4double diffCoeff,
62  // G4int atomsNumber = -1,
63  // G4double radius = -1,
64  // G4double lifetime = -1,
65  // G4String aType = "",
66  // G4MoleculeID ID = G4MoleculeID::Create()
67  // );
68 
69 
70  G4double mass = 1.0079*g/Avogadro* c_squared;
71  anInstance = new G4MoleculeDefinition(name, mass,
72  1, 1,
73  7e-9*(m*m/s),
74  1, 0.5*angstrom) ; //radius has to be checked
75 
76  ((G4MoleculeDefinition*) anInstance) -> SetLevelOccupation(0,1);
77  }
78  theInstance = reinterpret_cast<G4Hydrogen*>(anInstance);
79  return theInstance;
80 }
static G4Hydrogen * theInstance
Definition: G4Hydrogen.hh:53
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
G4String name
Definition: TRTMaterials.hh:40
static const double s
Definition: G4SIunits.hh:150
static G4ParticleTable * GetParticleTable()
static const double g
Definition: G4SIunits.hh:162
static const double m
Definition: G4SIunits.hh:110
void SetLevelOccupation(G4int, G4int eNb=2)
double G4double
Definition: G4Types.hh:76
static G4Hydrogen * Definition()
Definition: G4Hydrogen.cc:46
static const double angstrom
Definition: G4SIunits.hh:92