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>> 1 // This code implementation is the intellectual property of
>> 2 // the GEANT4 collaboration.
1 // 3 //
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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 <<
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24 // ******************************************* <<
25 // 7 //
>> 8 // $Id: G4PionZero.cc,v 1.4 2000/02/27 05:57:46 kurasige Exp $
>> 9 // GEANT4 tag $Name: geant4-03-00 $
>> 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 "g4std/fstream"
>> 26 #include "g4std/iomanip"
>> 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 34
46 G4PionZero* G4PionZero::theInstance = nullptr; << 35 // ######################################################################
47 << 36 // ### PIONZERO ###
48 G4PionZero* G4PionZero::Definition() << 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 SetParticleSubType("pi");
51 const G4String name = "pi0"; << 54 // Anti-particle of Pi0 is pi0 itself
52 // search in particle table] << 55 SetAntiPDGEncoding(encoding);
53 G4ParticleTable* pTable = G4ParticleTable::G << 56
54 G4ParticleDefinition* anInstance = pTable->F << 57 SetPDGStable(false);
55 if (anInstance == nullptr) { << 58
56 // create particle << 59 //create Decay Table
57 // << 60 G4DecayTable* table = GetDecayTable();
58 // Arguments for constructor are as fol << 61 if (table!=NULL) delete table;
59 // name mass << 62 table = new G4DecayTable();
60 // 2*spin parity C- << 63
61 // 2*Isospin 2*Isospin3 << 64 // create a decay channel
62 // type lepton number ba << 65 G4VDecayChannel* mode;
63 // stable lifetime << 66 // pi0 -> gamma + gamma
64 // shortlived subType << 67 mode = new G4PhaseSpaceDecayChannel("pi0",0.988,2,"gamma","gamma");
65 << 68 table->Insert(mode);
66 // clang-format off << 69 // pi0 -> gamma + e+ + e-
67 anInstance = new G4ParticleDefinition( << 70 mode = new G4DalitzDecayChannel("pi0",0.012,"e-","e+");
68 name, 0.1349766*GeV, 7.73e << 71 table->Insert(mode);
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 72
91 anInstance->SetDecayTable(table); << 73 SetDecayTable(table);
92 } <<
93 theInstance = static_cast<G4PionZero*>(anIns <<
94 return theInstance; <<
95 } 74 }
96 75
97 G4PionZero* G4PionZero::PionZeroDefinition() << 76 // ......................................................................
98 { << 77 // ... static member definitions ...
99 return Definition(); << 78 // ......................................................................
100 } << 79 //
>> 80 // Arguments for constructor are as follows
>> 81 // name mass width charge
>> 82 // 2*spin parity C-conjugation
>> 83 // 2*Isospin 2*Isospin3 G-parity
>> 84 // type lepton number baryon number PDG encoding
>> 85 // stable lifetime decay table
>> 86
>> 87 G4PionZero G4PionZero::thePionZero(
>> 88 "pi0", 0.1349764*GeV, 7.8e-06*MeV, 0.0,
>> 89 0, -1, +1,
>> 90 2, 0, -1,
>> 91 "meson", 0, 0, 111,
>> 92 false, 8.4e-8*ns, NULL
>> 93 );
>> 94
>> 95 G4PionZero* G4PionZero::PionZeroDefinition(){return &thePionZero;}
>> 96 // initialization for static cut values
>> 97 G4double G4PionZero::thePionZeroLengthCut = -1.0;
>> 98 G4double* G4PionZero::thePionZeroKineticEnergyCuts = NULL;
101 99
102 G4PionZero* G4PionZero::PionZero() << 100 // **********************************************************************
>> 101 // **************************** SetCuts *********************************
>> 102 // **********************************************************************
>> 103 // In this version Input Cut Value is meaning less
>> 104 // theKineticEnergyCuts for all materials are set to LowestEnergy
>> 105 void G4PionZero::SetCuts(G4double aCut)
103 { 106 {
104 return Definition(); << 107 theCutInMaxInteractionLength = aCut;
>> 108
>> 109 const G4MaterialTable* materialTable = G4Material::GetMaterialTable();
>> 110 // Create the vector of cuts in energy
>> 111 // corresponding to the stopping range cut
>> 112 if(theKineticEnergyCuts) delete [] theKineticEnergyCuts;
>> 113 theKineticEnergyCuts = new G4double [materialTable->length()];
>> 114
>> 115 // Build range vector for every material, convert cut into energy-cut,
>> 116 // fill theKineticEnergyCuts and delete the range vector
>> 117 for (G4int J=0; J<materialTable->length(); J++)
>> 118 {
>> 119 G4Material* aMaterial = (*materialTable)[J];
>> 120 theKineticEnergyCuts[J] = LowestEnergy;
>> 121 }
>> 122 thePionZeroLengthCut = theCutInMaxInteractionLength;
>> 123 thePionZeroKineticEnergyCuts = theKineticEnergyCuts;
105 } 124 }
>> 125
>> 126
>> 127
>> 128
>> 129
>> 130
106 131