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>> 1 // This code implementation is the intellectual property of >> 2 // the GEANT4 collaboration. 1 // 3 // 2 // ******************************************* << 4 // By copying, distributing or modifying the Program (or any work 3 // * License and Disclaimer << 5 // based on the Program) you indicate your acceptance of this statement, 4 // * << 6 // and all its terms. 5 // * The Geant4 software is copyright of th << 6 // * the Geant4 Collaboration. It is provided << 7 // * conditions of the Geant4 Software License << 8 // * LICENSE and available at http://cern.ch/ << 9 // * include a list of copyright holders. << 10 // * << 11 // * Neither the authors of this software syst << 12 // * institutes,nor the agencies providing fin << 13 // * work make any representation or warran << 14 // * regarding this software system or assum << 15 // * use. Please see the license in the file << 16 // * for the full disclaimer and the limitatio << 17 // * << 18 // * This code implementation is the result << 19 // * technical work of the GEANT4 collaboratio << 20 // * By using, copying, modifying or distri << 21 // * any work based on the software) you ag << 22 // * use in resulting scientific publicati << 23 // * acceptance of all terms of the Geant4 Sof << 24 // ******************************************* << 25 // 7 // >> 8 // $Id: G4PionZero.cc,v 1.2.8.1 1999/12/07 20:49:45 gunter Exp $ >> 9 // GEANT4 tag $Name: geant4-01-00 $ >> 10 // >> 11 // 26 // ------------------------------------------- 12 // ---------------------------------------------------------------------- 27 // GEANT 4 class implementation file 13 // GEANT 4 class implementation file 28 // 14 // >> 15 // For information related to this code contact: >> 16 // CERN, CN Division, ASD Group 29 // History: first implementation, based o 17 // History: first implementation, based on object model of 30 // 4th April 1996, G.Cosmo 18 // 4th April 1996, G.Cosmo 31 // ******************************************* 19 // ********************************************************************** 32 // New impelemenataion as an utility class M << 20 // Added particle definitions, H.Kurashige, 19 April 1996 >> 21 // Operators (+=, *=, ++, -> etc.) correctly used, P. Urban, 26/6/96 >> 22 // Add PionZeroDefinition(), H.Kurashige 4 July 1996 33 // ------------------------------------------- 23 // ---------------------------------------------------------------------- 34 24 >> 25 #include <fstream.h> >> 26 #include <iomanip.h> >> 27 35 #include "G4PionZero.hh" 28 #include "G4PionZero.hh" 36 29 >> 30 >> 31 #include "G4PhaseSpaceDecayChannel.hh" 37 #include "G4DalitzDecayChannel.hh" 32 #include "G4DalitzDecayChannel.hh" 38 #include "G4DecayTable.hh" 33 #include "G4DecayTable.hh" 39 #include "G4ParticleTable.hh" << 40 #include "G4PhaseSpaceDecayChannel.hh" << 41 #include "G4PhysicalConstants.hh" << 42 #include "G4String.hh" << 43 #include "G4SystemOfUnits.hh" << 44 #include "G4VDecayChannel.hh" << 45 << 46 G4PionZero* G4PionZero::theInstance = nullptr; << 47 34 48 G4PionZero* G4PionZero::Definition() << 35 // ###################################################################### >> 36 // ### PIONZERO ### >> 37 // ###################################################################### >> 38 >> 39 G4PionZero::G4PionZero( >> 40 const G4String& aName, G4double mass, >> 41 G4double width, G4double charge, >> 42 G4int iSpin, G4int iParity, >> 43 G4int iConjugation, G4int iIsospin, >> 44 G4int iIsospin3, G4int gParity, >> 45 const G4String& pType, G4int lepton, >> 46 G4int baryon, G4int encoding, >> 47 G4bool stable, G4double lifetime, >> 48 G4DecayTable *decaytable ) >> 49 : G4VMeson( aName,mass,width,charge,iSpin,iParity, >> 50 iConjugation,iIsospin,iIsospin3,gParity,pType, >> 51 lepton,baryon,encoding,stable,lifetime,decaytable ) 49 { 52 { 50 if (theInstance != nullptr) return theInstan << 53 // Anti-particle of Pi0 is pi0 itself 51 const G4String name = "pi0"; << 54 SetAntiPDGEncoding(encoding); 52 // search in particle table] << 53 G4ParticleTable* pTable = G4ParticleTable::G << 54 G4ParticleDefinition* anInstance = pTable->F << 55 if (anInstance == nullptr) { << 56 // create particle << 57 // << 58 // Arguments for constructor are as fol << 59 // name mass << 60 // 2*spin parity C- << 61 // 2*Isospin 2*Isospin3 << 62 // type lepton number ba << 63 // stable lifetime << 64 // shortlived subType << 65 << 66 // clang-format off << 67 anInstance = new G4ParticleDefinition( << 68 name, 0.1349766*GeV, 7.73e << 69 0, -1, << 70 2, 0, << 71 "meson", 0, << 72 false, 8.52e-8*ns, << 73 false, "pi", << 74 // clang-format on << 75 << 76 // Life time is given from width << 77 anInstance->SetPDGLifeTime(hbar_Planck / ( << 78 << 79 // create Decay Table << 80 auto table = new G4DecayTable(); << 81 << 82 // create a decay channel << 83 G4VDecayChannel* mode; << 84 // pi0 -> gamma + gamma << 85 mode = new G4PhaseSpaceDecayChannel("pi0", << 86 table->Insert(mode); << 87 // pi0 -> gamma + e+ + e- << 88 mode = new G4DalitzDecayChannel("pi0", 0.0 << 89 table->Insert(mode); << 90 55 91 anInstance->SetDecayTable(table); << 56 SetPDGStable(false); 92 } << 93 theInstance = static_cast<G4PionZero*>(anIns << 94 return theInstance; << 95 } << 96 57 97 G4PionZero* G4PionZero::PionZeroDefinition() << 58 //create Decay Table 98 { << 59 G4DecayTable* table = GetDecayTable(); 99 return Definition(); << 60 if (table!=NULL) delete table; >> 61 table = new G4DecayTable(); >> 62 >> 63 // create a decay channel >> 64 G4VDecayChannel* mode; >> 65 // pi0 -> gamma + gamma >> 66 mode = new G4PhaseSpaceDecayChannel("pi0",0.988,2,"gamma","gamma"); >> 67 table->Insert(mode); >> 68 // pi0 -> gamma + e+ + e- >> 69 mode = new G4DalitzDecayChannel("pi0",0.012,"e-","e+"); >> 70 table->Insert(mode); >> 71 >> 72 SetDecayTable(table); 100 } 73 } 101 74 102 G4PionZero* G4PionZero::PionZero() << 75 // ...................................................................... >> 76 // ... static member definitions ... >> 77 // ...................................................................... >> 78 // >> 79 // Arguments for constructor are as follows >> 80 // name mass width charge >> 81 // 2*spin parity C-conjugation >> 82 // 2*Isospin 2*Isospin3 G-parity >> 83 // type lepton number baryon number PDG encoding >> 84 // stable lifetime decay table >> 85 >> 86 G4PionZero G4PionZero::thePionZero( >> 87 "pi0", 0.1349764*GeV, 7.8e-06*MeV, 0.0, >> 88 0, -1, +1, >> 89 2, 0, -1, >> 90 "meson", 0, 0, 111, >> 91 false, 8.4e-8*ns, NULL >> 92 ); >> 93 >> 94 G4PionZero* G4PionZero::PionZeroDefinition(){return &thePionZero;} >> 95 // initialization for static cut values >> 96 G4double G4PionZero::thePionZeroLengthCut = -1.0; >> 97 G4double* G4PionZero::thePionZeroKineticEnergyCuts = NULL; >> 98 >> 99 // ********************************************************************** >> 100 // **************************** SetCuts ********************************* >> 101 // ********************************************************************** >> 102 // In this version Input Cut Value is meaning less >> 103 // theKineticEnergyCuts for all materials are set to LowestEnergy >> 104 void G4PionZero::SetCuts(G4double aCut) 103 { 105 { 104 return Definition(); << 106 theCutInMaxInteractionLength = aCut; >> 107 >> 108 const G4MaterialTable* materialTable = G4Material::GetMaterialTable(); >> 109 // Create the vector of cuts in energy >> 110 // corresponding to the stopping range cut >> 111 if(theKineticEnergyCuts) delete [] theKineticEnergyCuts; >> 112 theKineticEnergyCuts = new G4double [materialTable->length()]; >> 113 >> 114 // Build range vector for every material, convert cut into energy-cut, >> 115 // fill theKineticEnergyCuts and delete the range vector >> 116 for (G4int J=0; J<materialTable->length(); J++) >> 117 { >> 118 G4Material* aMaterial = (*materialTable)[J]; >> 119 theKineticEnergyCuts[J] = LowestEnergy; >> 120 } >> 121 thePionZeroLengthCut = theCutInMaxInteractionLength; >> 122 thePionZeroKineticEnergyCuts = theKineticEnergyCuts; 105 } 123 } >> 124 >> 125 >> 126 >> 127 >> 128 >> 129 106 130