G4XiMinus.cc

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00001 //
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00025 //
00026 //
00027 // $Id$
00028 //
00029 // 
00030 // ----------------------------------------------------------------------
00031 //      GEANT 4 class implementation file
00032 //
00033 //      History: first implementation, based on object model of
00034 //      4th April 1996, G.Cosmo
00035 // **********************************************************************
00036 //  New impelemenataion as an utility class  M.Asai, 26 July 2004
00037 // ----------------------------------------------------------------------
00038 
00039 #include "G4XiMinus.hh"
00040 #include "G4PhysicalConstants.hh"
00041 #include "G4SystemOfUnits.hh"
00042 #include "G4ParticleTable.hh"
00043 
00044 #include "G4PhaseSpaceDecayChannel.hh"
00045 #include "G4DecayTable.hh"
00046 
00047 // ######################################################################
00048 // ###                           XiMinus                              ###
00049 // ######################################################################
00050 
00051 G4XiMinus* G4XiMinus::theInstance = 0;
00052 
00053 G4XiMinus* G4XiMinus::Definition()
00054 {
00055   if (theInstance !=0) return theInstance;
00056   const G4String name = "xi-";
00057   // search in particle table]
00058   G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
00059   G4ParticleDefinition* anInstance = pTable->FindParticle(name);
00060   if (anInstance ==0)
00061   {
00062   // create particle
00063   //
00064   //    Arguments for constructor are as follows
00065   //               name             mass          width         charge
00066   //             2*spin           parity  C-conjugation
00067   //          2*Isospin       2*Isospin3       G-parity
00068   //               type    lepton number  baryon number   PDG encoding
00069   //             stable         lifetime    decay table
00070   //             shortlived      subType    anti_encoding
00071 
00072     anInstance = new G4ParticleDefinition(
00073                  name,    1.32171*GeV,  4.02e-12*MeV,    -1*eplus,
00074                     1,              +1,             0,
00075                     1,              -1,             0,
00076              "baryon",               0,            +1,        3312,
00077                 false,       0.1639*ns,          NULL,
00078                 false,       "xi");
00079 
00080     // Magnetic Moment
00081     G4double mN = eplus*hbar_Planck/2./(proton_mass_c2 /c_squared);
00082     anInstance->SetPDGMagneticMoment( -0.6507 * mN);
00083  
00084     //create Decay Table
00085     G4DecayTable* table = new G4DecayTable();
00086     
00087     // create decay channels
00088     G4VDecayChannel** mode = new G4VDecayChannel*[1];
00089     // xi- -> lambda + pi-
00090     mode[0] = new G4PhaseSpaceDecayChannel("xi-",1.000,2,"lambda","pi-");
00091     
00092     for (G4int index=0; index <1; index++ ) table->Insert(mode[index]);
00093     delete [] mode;
00094 
00095     anInstance->SetDecayTable(table);
00096   }
00097   theInstance = reinterpret_cast<G4XiMinus*>(anInstance);
00098   return theInstance;
00099 }
00100 
00101 G4XiMinus*  G4XiMinus::XiMinusDefinition()
00102 {
00103   return Definition();
00104 }
00105 
00106 G4XiMinus*  G4XiMinus::XiMinus()
00107 {
00108   return Definition();
00109 }
00110 

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