Gabriele Cosmo
85 lines
3.5 KiB
C++
85 lines
3.5 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// ----------------------------------------------------------------------
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// GEANT 4 class implementation file
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//
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// History: first implementation, based on object model of
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// 4-th April 1996, G.Cosmo
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// ****************************************************************
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// New impelemenataion as an utility class H.Kurashige, 14 July 2004
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// ----------------------------------------------------------------
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#include "G4Gamma.hh"
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#include "G4ParticleTable.hh"
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#include "G4String.hh"
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#include "G4SystemOfUnits.hh"
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G4Gamma* G4Gamma::theInstance = nullptr;
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G4Gamma* G4Gamma::Definition()
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{
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if (theInstance != nullptr) return theInstance;
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const G4String name = "gamma";
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// search in particle table]
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G4ParticleTable* pTable = G4ParticleTable::GetParticleTable();
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G4ParticleDefinition* anInstance = pTable->FindParticle(name);
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if (anInstance == nullptr) {
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// create particle
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//
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// Arguments for constructor are as follows
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// name mass width charge
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// 2*spin parity C-conjugation
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// 2*Isospin 2*Isospin3 G-parity
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// type lepton number baryon number PDG encoding
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// stable lifetime decay table
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// shortlived subType anti_encoding
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// clang-format off
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anInstance = new G4ParticleDefinition(
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name, 0.0*MeV, 0.0*MeV, 0.0,
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2, -1, -1,
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0, 0, 0,
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"gamma", 0, 0, 22,
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true, -1.0, nullptr,
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false, "photon", 22
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);
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// clang-format on
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}
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theInstance = static_cast<G4Gamma*>(anInstance);
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return theInstance;
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}
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G4Gamma* G4Gamma::GammaDefinition()
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{
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return Definition();
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}
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G4Gamma* G4Gamma::Gamma()
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{
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return Definition();
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}
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