Gabriele Cosmo
104 lines
4.1 KiB
C++
104 lines
4.1 KiB
C++
//
|
|
// ********************************************************************
|
|
// * DISCLAIMER *
|
|
// * *
|
|
// * The following disclaimer summarizes all the specific disclaimers *
|
|
// * of contributors to this software. The specific disclaimers,which *
|
|
// * govern, are listed with their locations in: *
|
|
// * http://cern.ch/geant4/license *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. *
|
|
// * *
|
|
// * This code implementation is the intellectual property of the *
|
|
// * GEANT4 collaboration. *
|
|
// * By copying, distributing or modifying the Program (or any work *
|
|
// * based on the Program) you indicate your acceptance of this *
|
|
// * statement, and all its terms. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4SigmaPlus.cc,v 1.12 2005/01/14 03:49:11 asaim Exp $
|
|
// GEANT4 tag $Name: geant4-08-00 $
|
|
//
|
|
//
|
|
// ----------------------------------------------------------------------
|
|
// GEANT 4 class implementation file
|
|
//
|
|
// History: first implementation, based on object model of
|
|
// 4th April 1996, G.Cosmo
|
|
// **********************************************************************
|
|
// New impelemenataion as an utility class M.Asai, 26 July 2004
|
|
// ----------------------------------------------------------------------
|
|
|
|
#include "G4SigmaPlus.hh"
|
|
#include "G4ParticleTable.hh"
|
|
|
|
#include "G4PhaseSpaceDecayChannel.hh"
|
|
#include "G4DecayTable.hh"
|
|
|
|
// ######################################################################
|
|
// ### SigmaPlus ###
|
|
// ######################################################################
|
|
|
|
G4SigmaPlus* G4SigmaPlus::theInstance = 0;
|
|
|
|
G4SigmaPlus* G4SigmaPlus::Definition()
|
|
{
|
|
if (theInstance !=0) return theInstance;
|
|
const G4String name = "sigma+";
|
|
// search in particle table]
|
|
G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
|
|
G4ParticleDefinition* anInstance = pTable->FindParticle(name);
|
|
if (anInstance ==0)
|
|
{
|
|
// create particle
|
|
//
|
|
// Arguments for constructor are as follows
|
|
// name mass width charge
|
|
// 2*spin parity C-conjugation
|
|
// 2*Isospin 2*Isospin3 G-parity
|
|
// type lepton number baryon number PDG encoding
|
|
// stable lifetime decay table
|
|
// shortlived subType anti_encoding
|
|
|
|
anInstance = new G4ParticleDefinition(
|
|
name, 1.18937*GeV, 8.209e-12*MeV, eplus,
|
|
1, +1, 0,
|
|
2, +2, 0,
|
|
"baryon", 0, +1, 3222,
|
|
false, 0.0799*ns, NULL,
|
|
false, "sigma");
|
|
//create Decay Table
|
|
G4DecayTable* table = new G4DecayTable();
|
|
|
|
// create decay channels
|
|
G4VDecayChannel** mode = new G4VDecayChannel*[2];
|
|
// sigma+ -> proton + pi0
|
|
mode[0] = new G4PhaseSpaceDecayChannel("sigma+",0.516,2,"proton","pi0");
|
|
// sigma+ -> neutron + pi+
|
|
mode[1] = new G4PhaseSpaceDecayChannel("sigma+",0.483,2,"neutron","pi+");
|
|
|
|
for (G4int index=0; index <2; index++ ) table->Insert(mode[index]);
|
|
delete [] mode;
|
|
|
|
anInstance->SetDecayTable(table);
|
|
}
|
|
theInstance = reinterpret_cast<G4SigmaPlus*>(anInstance);
|
|
return theInstance;
|
|
}
|
|
|
|
G4SigmaPlus* G4SigmaPlus::SigmaPlusDefinition()
|
|
{
|
|
return Definition();
|
|
}
|
|
|
|
G4SigmaPlus* G4SigmaPlus::SigmaPlus()
|
|
{
|
|
return Definition();
|
|
}
|
|
|