Geant4  10.00.p01
G4H2O.cc
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26 // $Id: G4H2O.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 "G4H2O.hh"
37 #include "G4PhysicalConstants.hh"
38 #include "G4SystemOfUnits.hh"
39 #include "G4ParticleTable.hh"
40 
41 // ######################################################################
42 // ### Hydrogen ###
43 // ######################################################################
44 /*G4ThreadLocal*/ G4H2O* G4H2O::theInstance = 0;
45 
47 {
48  if (theInstance !=0) return theInstance;
49  const G4String name = "H_{2}O";
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  G4double mass = 18.0153*g/Avogadro * c_squared;
70  anInstance = new G4MoleculeDefinition(name, mass, 10, 8,
71  2e-5*(cm*cm/s),
72  3, 2.75 * angstrom, picosecond);
73 
74  ((G4MoleculeDefinition*) anInstance) ->SetLevelOccupation(0);
75  ((G4MoleculeDefinition*) anInstance) ->SetLevelOccupation(1);
76  ((G4MoleculeDefinition*) anInstance) ->SetLevelOccupation(2);
77  ((G4MoleculeDefinition*) anInstance) ->SetLevelOccupation(3);
78  ((G4MoleculeDefinition*) anInstance) ->SetLevelOccupation(4);
79 
80  }
81  theInstance = reinterpret_cast<G4H2O*>(anInstance);
82  return theInstance;
83 }
84 
static const double cm
Definition: G4SIunits.hh:106
G4ParticleDefinition * FindParticle(G4int PDGEncoding)
static G4H2O * Definition()
Definition: G4H2O.cc:46
G4String name
Definition: TRTMaterials.hh:40
static G4H2O * theInstance
Definition: G4H2O.hh:53
static const double s
Definition: G4SIunits.hh:150
static G4ParticleTable * GetParticleTable()
static const double g
Definition: G4SIunits.hh:162
static const double picosecond
Definition: G4SIunits.hh:142
Definition: G4H2O.hh:50
double G4double
Definition: G4Types.hh:76
static const double angstrom
Definition: G4SIunits.hh:92