[824] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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[921] | 27 | // $Id: G4Positron.cc,v 1.16 2008/11/13 08:23:12 kurasige Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-02-cand-01 $ |
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[824] | 29 | // |
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| 30 | // |
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| 31 | // ---------------------------------------------------------------------- |
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| 32 | // GEANT 4 class implementation file |
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| 33 | // |
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| 34 | // History: first implementation, based on object model of |
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| 35 | // 4th April 1996, G.Cosmo |
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| 36 | // ********************************************************************** |
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| 37 | // New impelemenataion as an utility class M.Asai, 26 July 2004 |
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| 38 | // ---------------------------------------------------------------------- |
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| 39 | |
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| 40 | #include "G4Positron.hh" |
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| 41 | #include "G4ParticleTable.hh" |
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| 42 | |
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| 43 | // ###################################################################### |
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| 44 | // ### POSITRON ### |
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| 45 | // ###################################################################### |
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| 46 | G4Positron* G4Positron::theInstance = 0; |
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| 47 | |
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| 48 | G4Positron* G4Positron::Definition() |
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| 49 | { |
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| 50 | if (theInstance !=0) return theInstance; |
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| 51 | const G4String name = "e+"; |
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| 52 | // search in particle table] |
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| 53 | G4ParticleTable* pTable = G4ParticleTable::GetParticleTable(); |
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| 54 | G4ParticleDefinition* anInstance = pTable->FindParticle(name); |
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| 55 | if (anInstance ==0) |
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| 56 | { |
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| 57 | // create particle |
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| 58 | // |
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| 59 | // Arguments for constructor are as follows |
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| 60 | // name mass width charge |
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| 61 | // 2*spin parity C-conjugation |
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| 62 | // 2*Isospin 2*Isospin3 G-parity |
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| 63 | // type lepton number baryon number PDG encoding |
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| 64 | // stable lifetime decay table |
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| 65 | // shortlived subType anti_encoding |
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[850] | 66 | // use constants in CLHEP |
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| 67 | // static const double electron_mass_c2 = 0.51099906 * MeV; |
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| 68 | |
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[824] | 69 | anInstance = new G4ParticleDefinition( |
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[850] | 70 | name, electron_mass_c2, 0.0*MeV, +1.*eplus, |
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| 71 | 1, 0, 0, |
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| 72 | 0, 0, 0, |
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| 73 | "lepton", -1, 0, -11, |
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| 74 | true, -1.0, NULL, |
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| 75 | false, "e" |
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[824] | 76 | ); |
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| 77 | |
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| 78 | // Bohr Magnetron |
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[921] | 79 | G4double muB = 0.5*eplus*hbar_Planck/(electron_mass_c2/c_squared) ; |
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[824] | 80 | |
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[921] | 81 | anInstance->SetPDGMagneticMoment( muB * 2.* 1.0011596521859 ); |
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[824] | 82 | |
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| 83 | } |
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| 84 | theInstance = reinterpret_cast<G4Positron*>(anInstance); |
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| 85 | return theInstance; |
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| 86 | } |
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| 87 | |
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| 88 | G4Positron* G4Positron::PositronDefinition() |
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| 89 | { |
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| 90 | return Definition(); |
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| 91 | } |
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| 92 | |
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| 93 | G4Positron* G4Positron::Positron() |
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| 94 | { |
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| 95 | return Definition(); |
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| 96 | } |
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| 97 | |
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| 98 | |
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