[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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[1315] | 27 | // $Id: G4VDecayChannel.cc,v 1.20 2010/05/20 01:01:07 kurasige Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-04-beta-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 header file |
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| 33 | // |
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| 34 | // History: first implementation, based on object model of |
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| 35 | // 27 July 1996 H.Kurashige |
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| 36 | // 30 May 1997 H.Kurashige |
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| 37 | // 23 Mar. 2000 H.Weber : add GetAngularMomentum |
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| 38 | // ------------------------------------------------------------ |
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| 39 | |
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| 40 | #include "G4ParticleDefinition.hh" |
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| 41 | #include "G4ParticleTable.hh" |
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| 42 | #include "G4DecayTable.hh" |
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| 43 | #include "G4DecayProducts.hh" |
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| 44 | #include "G4VDecayChannel.hh" |
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| 45 | |
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| 46 | const G4String G4VDecayChannel::noName = " "; |
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| 47 | |
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| 48 | G4VDecayChannel::G4VDecayChannel(const G4String &aName, G4int Verbose) |
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| 49 | :kinematics_name(aName), |
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| 50 | rbranch(0.0), |
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| 51 | numberOfDaughters(0), |
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| 52 | parent_name(0), daughters_name(0), |
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| 53 | particletable(0), |
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| 54 | parent(0), daughters(0), |
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| 55 | parent_mass(0.0), daughters_mass(0), |
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| 56 | verboseLevel(Verbose) |
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| 57 | { |
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| 58 | // set pointer to G4ParticleTable (static and singleton object) |
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| 59 | particletable = G4ParticleTable::GetParticleTable(); |
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| 60 | } |
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| 61 | |
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| 62 | G4VDecayChannel::G4VDecayChannel(const G4String &aName, |
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| 63 | const G4String& theParentName, |
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| 64 | G4double theBR, |
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| 65 | G4int theNumberOfDaughters, |
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| 66 | const G4String& theDaughterName1, |
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| 67 | const G4String& theDaughterName2, |
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| 68 | const G4String& theDaughterName3, |
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| 69 | const G4String& theDaughterName4 ) |
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| 70 | :kinematics_name(aName), |
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| 71 | rbranch(theBR), |
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| 72 | numberOfDaughters(theNumberOfDaughters), |
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| 73 | parent_name(0), daughters_name(0), |
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| 74 | particletable(0), |
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| 75 | parent(0), daughters(0), |
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| 76 | parent_mass(0.0), daughters_mass(0), |
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| 77 | verboseLevel(1) |
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| 78 | { |
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| 79 | // set pointer to G4ParticleTable (static and singleton object) |
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| 80 | particletable = G4ParticleTable::GetParticleTable(); |
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| 81 | |
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| 82 | // parent name |
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| 83 | parent_name = new G4String(theParentName); |
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| 84 | |
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| 85 | // cleate array |
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| 86 | daughters_name = new G4String*[numberOfDaughters]; |
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| 87 | for (G4int index=0;index<numberOfDaughters;index++) daughters_name[index]=0; |
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| 88 | |
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| 89 | // daughters' name |
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| 90 | if (numberOfDaughters>0) daughters_name[0] = new G4String(theDaughterName1); |
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| 91 | if (numberOfDaughters>1) daughters_name[1] = new G4String(theDaughterName2); |
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| 92 | if (numberOfDaughters>2) daughters_name[2] = new G4String(theDaughterName3); |
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| 93 | if (numberOfDaughters>3) daughters_name[3] = new G4String(theDaughterName4); |
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| 94 | } |
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| 95 | |
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| 96 | |
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| 97 | |
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| 98 | G4VDecayChannel::G4VDecayChannel(const G4VDecayChannel &right) |
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| 99 | { |
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| 100 | kinematics_name = right.kinematics_name; |
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| 101 | verboseLevel = right.verboseLevel; |
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| 102 | rbranch = right.rbranch; |
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| 103 | |
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| 104 | // copy parent name |
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| 105 | parent_name = new G4String(*right.parent_name); |
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| 106 | parent = 0; |
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| 107 | parent_mass = 0.0; |
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| 108 | |
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| 109 | //create array |
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| 110 | numberOfDaughters = right.numberOfDaughters; |
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| 111 | |
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| 112 | if ( numberOfDaughters >0 ) { |
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| 113 | daughters_name = new G4String*[numberOfDaughters]; |
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| 114 | //copy daughters name |
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| 115 | for (G4int index=0; index < numberOfDaughters; index++) |
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| 116 | { |
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| 117 | daughters_name[index] = new G4String(*right.daughters_name[index]); |
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| 118 | } |
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| 119 | } |
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| 120 | |
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| 121 | // |
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| 122 | daughters_mass = 0; |
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| 123 | daughters = 0; |
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| 124 | |
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| 125 | // particle table |
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| 126 | particletable = G4ParticleTable::GetParticleTable(); |
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| 127 | } |
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| 128 | |
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| 129 | G4VDecayChannel & G4VDecayChannel::operator=(const G4VDecayChannel &right) |
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| 130 | { |
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| 131 | if (this != &right) { |
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| 132 | kinematics_name = right.kinematics_name; |
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| 133 | verboseLevel = right.verboseLevel; |
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| 134 | rbranch = right.rbranch; |
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| 135 | |
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| 136 | // copy parent name |
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| 137 | parent_name = new G4String(*right.parent_name); |
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| 138 | |
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| 139 | // clear daughters_name array |
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| 140 | ClearDaughtersName(); |
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| 141 | |
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| 142 | // recreate array |
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| 143 | numberOfDaughters = right.numberOfDaughters; |
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| 144 | if ( numberOfDaughters >0 ) { |
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| 145 | daughters_name = new G4String*[numberOfDaughters]; |
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| 146 | //copy daughters name |
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| 147 | for (G4int index=0; index < numberOfDaughters; index++) { |
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| 148 | daughters_name[index] = new G4String(*right.daughters_name[index]); |
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| 149 | } |
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| 150 | } |
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| 151 | } |
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| 152 | |
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| 153 | // |
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| 154 | parent = 0; |
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| 155 | daughters = 0; |
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| 156 | parent_mass = 0.0; |
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| 157 | daughters_mass = 0; |
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| 158 | |
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| 159 | // particle table |
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| 160 | particletable = G4ParticleTable::GetParticleTable(); |
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| 161 | |
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| 162 | return *this; |
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| 163 | } |
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| 164 | |
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| 165 | |
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| 166 | G4VDecayChannel::~G4VDecayChannel() |
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| 167 | { |
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[1196] | 168 | ClearDaughtersName(); |
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[824] | 169 | if (parent_name != 0) delete parent_name; |
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[1196] | 170 | parent_name = 0; |
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[824] | 171 | if (daughters_mass != 0) delete [] daughters_mass; |
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[1196] | 172 | daughters_mass =0; |
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[824] | 173 | } |
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| 174 | |
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| 175 | void G4VDecayChannel::ClearDaughtersName() |
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| 176 | { |
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| 177 | if ( daughters_name != 0) { |
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| 178 | if (numberOfDaughters>0) { |
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| 179 | #ifdef G4VERBOSE |
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| 180 | if (verboseLevel>1) { |
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[1196] | 181 | G4cerr << "G4VDecayChannel::ClearDaughtersName " |
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| 182 | << " for " << *parent_name << G4endl; |
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[824] | 183 | } |
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| 184 | #endif |
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| 185 | for (G4int index=0; index < numberOfDaughters; index++) { |
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| 186 | if (daughters_name[index] != 0) delete daughters_name[index]; |
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| 187 | } |
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| 188 | } |
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| 189 | delete [] daughters_name; |
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| 190 | daughters_name = 0; |
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| 191 | } |
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| 192 | // |
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| 193 | if (daughters != 0) delete [] daughters; |
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| 194 | if (daughters_mass != 0) delete [] daughters_mass; |
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| 195 | daughters = 0; |
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| 196 | daughters_mass = 0; |
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| 197 | |
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| 198 | numberOfDaughters = 0; |
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| 199 | } |
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| 200 | |
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| 201 | void G4VDecayChannel::SetNumberOfDaughters(G4int size) |
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| 202 | { |
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| 203 | if (size >0) { |
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| 204 | // remove old contents |
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| 205 | ClearDaughtersName(); |
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| 206 | // cleate array |
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| 207 | daughters_name = new G4String*[size]; |
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| 208 | for (G4int index=0;index<size;index++) daughters_name[index]=0; |
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| 209 | numberOfDaughters = size; |
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| 210 | } |
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| 211 | } |
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| 212 | |
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| 213 | void G4VDecayChannel::SetDaughter(G4int anIndex, |
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| 214 | const G4String &particle_name) |
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| 215 | { |
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| 216 | // check numberOfDaughters is positive |
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| 217 | if (numberOfDaughters<=0) { |
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| 218 | #ifdef G4VERBOSE |
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| 219 | if (verboseLevel>0) { |
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[1315] | 220 | G4cerr << "G4VDecayChannel::SetDaughter: " |
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| 221 | << "Number of daughters is not defined" << G4endl; |
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[824] | 222 | } |
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| 223 | #endif |
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| 224 | return; |
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| 225 | } |
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| 226 | |
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| 227 | // check existence of daughters_name array |
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| 228 | if (daughters_name == 0) { |
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| 229 | // cleate array |
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| 230 | daughters_name = new G4String*[numberOfDaughters]; |
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| 231 | for (G4int index=0;index<numberOfDaughters;index++) { |
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| 232 | daughters_name[index]=0; |
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| 233 | } |
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| 234 | } |
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| 235 | |
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| 236 | // check an index |
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| 237 | if ( (anIndex<0) || (anIndex>=numberOfDaughters) ) { |
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| 238 | #ifdef G4VERBOSE |
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| 239 | if (verboseLevel>0) { |
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[1315] | 240 | G4cerr << "G4VDecayChannel::SetDaughter" |
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| 241 | << "index out of range " << anIndex << G4endl; |
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[824] | 242 | } |
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| 243 | #endif |
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| 244 | } else { |
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| 245 | // delete the old name if it exists |
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| 246 | if (daughters_name[anIndex]!=0) delete daughters_name[anIndex]; |
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| 247 | // fill the name |
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| 248 | daughters_name[anIndex] = new G4String(particle_name); |
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| 249 | // refill the array of daughters[] if it exists |
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| 250 | if (daughters != 0) FillDaughters(); |
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| 251 | #ifdef G4VERBOSE |
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| 252 | if (verboseLevel>1) { |
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| 253 | G4cout << "G4VDecayChannel::SetDaughter[" << anIndex <<"] :"; |
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| 254 | G4cout << daughters_name[anIndex] << ":" << *daughters_name[anIndex]<<G4endl; |
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| 255 | } |
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| 256 | #endif |
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| 257 | } |
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| 258 | } |
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| 259 | |
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| 260 | void G4VDecayChannel::SetDaughter(G4int anIndex, const G4ParticleDefinition * parent_type) |
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| 261 | { |
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| 262 | if (parent_type != 0) SetDaughter(anIndex, parent_type->GetParticleName()); |
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| 263 | } |
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| 264 | |
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| 265 | void G4VDecayChannel::FillDaughters() |
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| 266 | { |
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| 267 | G4int index; |
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| 268 | |
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| 269 | #ifdef G4VERBOSE |
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| 270 | if (verboseLevel>1) G4cout << "G4VDecayChannel::FillDaughters()" <<G4endl; |
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| 271 | #endif |
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| 272 | if (daughters != 0) delete [] daughters; |
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| 273 | |
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| 274 | // parent mass |
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| 275 | if (parent == 0) FillParent(); |
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| 276 | G4double parentmass = parent->GetPDGMass(); |
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| 277 | |
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| 278 | // |
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| 279 | G4double sumofdaughtermass = 0.0; |
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| 280 | if ((numberOfDaughters <=0) || (daughters_name == 0) ){ |
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| 281 | #ifdef G4VERBOSE |
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| 282 | if (verboseLevel>0) { |
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[1315] | 283 | G4cerr << "G4VDecayChannel::FillDaughters " |
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| 284 | << "[ " << parent->GetParticleName() << " ]" |
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| 285 | << "numberOfDaughters is not defined yet"; |
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[824] | 286 | } |
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| 287 | #endif |
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| 288 | daughters = 0; |
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| 289 | G4Exception("G4VDecayChannel::FillDaughters", |
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| 290 | "can not fill daughters", FatalException, |
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| 291 | "numberOfDaughters is not defined yet"); |
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| 292 | } |
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| 293 | |
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| 294 | //create and set the array of pointers to daughter particles |
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| 295 | daughters = new G4ParticleDefinition*[numberOfDaughters]; |
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| 296 | if (daughters_mass != 0) delete [] daughters_mass; |
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| 297 | daughters_mass = new G4double[numberOfDaughters]; |
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| 298 | // loop over all daughters |
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| 299 | for (index=0; index < numberOfDaughters; index++) { |
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| 300 | if (daughters_name[index] == 0) { |
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| 301 | // daughter name is not defined |
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| 302 | #ifdef G4VERBOSE |
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| 303 | if (verboseLevel>0) { |
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[1315] | 304 | G4cerr << "G4VDecayChannel::FillDaughters " |
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| 305 | << "[ " << parent->GetParticleName() << " ]" |
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| 306 | << index << "-th daughter is not defined yet" << G4endl; |
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[824] | 307 | } |
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| 308 | #endif |
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| 309 | daughters[index] = 0; |
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| 310 | G4Exception("G4VDecayChannel::FillDaughters", |
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| 311 | "can not fill daughters", FatalException, |
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| 312 | "name of a daughter is not defined yet"); |
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| 313 | } |
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| 314 | //search daughter particles in the particle table |
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| 315 | daughters[index] = particletable->FindParticle(*daughters_name[index]); |
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| 316 | if (daughters[index] == 0) { |
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| 317 | // can not find the daughter particle |
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| 318 | #ifdef G4VERBOSE |
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| 319 | if (verboseLevel>0) { |
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[1315] | 320 | G4cerr << "G4VDecayChannel::FillDaughters " |
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| 321 | << "[ " << parent->GetParticleName() << " ]" |
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| 322 | << index << ":" << *daughters_name[index] |
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| 323 | << " is not defined !!" << G4endl; |
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| 324 | G4cerr << " The BR of this decay mode is set to zero " << G4endl; |
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[824] | 325 | } |
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| 326 | #endif |
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| 327 | SetBR(0.0); |
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| 328 | return; |
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| 329 | } |
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| 330 | #ifdef G4VERBOSE |
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| 331 | if (verboseLevel>1) { |
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| 332 | G4cout << index << ":" << *daughters_name[index]; |
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| 333 | G4cout << ":" << daughters[index] << G4endl; |
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| 334 | } |
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| 335 | #endif |
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| 336 | daughters_mass[index] = daughters[index]->GetPDGMass(); |
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| 337 | sumofdaughtermass += daughters[index]->GetPDGMass(); |
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| 338 | } // end loop over all daughters |
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| 339 | |
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| 340 | // check sum of daghter mass |
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| 341 | G4double widthMass = parent->GetPDGWidth(); |
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| 342 | if ( (parent->GetParticleType() != "nucleus") && |
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| 343 | (sumofdaughtermass > parentmass + 5*widthMass) ){ |
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| 344 | // !!! illegal mass !!! |
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| 345 | #ifdef G4VERBOSE |
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| 346 | if (GetVerboseLevel()>0) { |
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[1315] | 347 | G4cerr << "G4VDecayChannel::FillDaughters " |
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| 348 | << "[ " << parent->GetParticleName() << " ]" |
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| 349 | << " Energy/Momentum conserevation breaks " <<G4endl; |
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[824] | 350 | if (GetVerboseLevel()>1) { |
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[1315] | 351 | G4cerr << " parent:" << *parent_name |
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| 352 | << " mass:" << parentmass/GeV << "[GeV/c/c]" <<G4endl; |
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[824] | 353 | for (index=0; index < numberOfDaughters; index++){ |
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[1315] | 354 | G4cerr << " daughter " << index << ":" << *daughters_name[index] |
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| 355 | << " mass:" << daughters[index]->GetPDGMass()/GeV |
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| 356 | << "[GeV/c/c]" <<G4endl; |
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[824] | 357 | } |
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| 358 | } |
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| 359 | } |
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| 360 | #endif |
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| 361 | } |
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| 362 | } |
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| 363 | |
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| 364 | |
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| 365 | void G4VDecayChannel::FillParent() |
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| 366 | { |
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| 367 | if (parent_name == 0) { |
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| 368 | // parent name is not defined |
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| 369 | #ifdef G4VERBOSE |
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| 370 | if (verboseLevel>0) { |
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[1315] | 371 | G4cerr << "G4VDecayChannel::FillParent " |
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| 372 | << ": parent name is not defined !!" << G4endl; |
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[824] | 373 | } |
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| 374 | #endif |
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| 375 | parent = 0; |
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| 376 | G4Exception("G4VDecayChannel::FillParent()", |
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| 377 | "can not fill parent", FatalException, |
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| 378 | "parent name is not defined yet"); |
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| 379 | } |
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| 380 | // search parent particle in the particle table |
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| 381 | parent = particletable->FindParticle(*parent_name); |
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| 382 | if (parent == 0) { |
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| 383 | // parent particle does not exist |
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| 384 | #ifdef G4VERBOSE |
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| 385 | if (verboseLevel>0) { |
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[1315] | 386 | G4cerr << "G4VDecayChannel::FillParent " |
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| 387 | << *parent_name << " does not exist !!" << G4endl; |
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[824] | 388 | } |
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| 389 | #endif |
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| 390 | G4Exception("G4VDecayChannel::FillParent()", |
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| 391 | "can not fill parent", FatalException, |
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| 392 | "parent does not exist"); |
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| 393 | } |
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| 394 | parent_mass = parent->GetPDGMass(); |
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| 395 | } |
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| 396 | |
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| 397 | void G4VDecayChannel::SetParent(const G4ParticleDefinition * parent_type) |
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| 398 | { |
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| 399 | if (parent_type != 0) SetParent(parent_type->GetParticleName()); |
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| 400 | } |
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| 401 | |
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| 402 | G4int G4VDecayChannel::GetAngularMomentum() |
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| 403 | { |
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| 404 | // determine angular momentum |
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| 405 | |
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| 406 | // fill pointers to daughter particles if not yet set |
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| 407 | if (daughters == 0) FillDaughters(); |
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| 408 | |
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| 409 | const G4int PiSpin = parent->GetPDGiSpin(); |
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| 410 | const G4int PParity = parent->GetPDGiParity(); |
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| 411 | if (2==numberOfDaughters) { // up to now we can only handle two particle decays |
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| 412 | const G4int D1iSpin = daughters[0]->GetPDGiSpin(); |
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| 413 | const G4int D1Parity = daughters[0]->GetPDGiParity(); |
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| 414 | const G4int D2iSpin = daughters[1]->GetPDGiSpin(); |
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| 415 | const G4int D2Parity = daughters[1]->GetPDGiParity(); |
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| 416 | const G4int MiniSpin = std::abs (D1iSpin - D2iSpin); |
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| 417 | const G4int MaxiSpin = D1iSpin + D2iSpin; |
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| 418 | const G4int lMax = (PiSpin+D1iSpin+D2iSpin)/2; // l is allways int |
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| 419 | G4int lMin; |
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| 420 | #ifdef G4VERBOSE |
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| 421 | if (verboseLevel>1) { |
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| 422 | G4cout << "iSpin: " << PiSpin << " -> " << D1iSpin << " + " << D2iSpin << G4endl; |
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| 423 | G4cout << "2*jmin, 2*jmax, lmax " << MiniSpin << " " << MaxiSpin << " " << lMax << G4endl; |
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| 424 | } |
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| 425 | #endif |
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| 426 | for (G4int j=MiniSpin; j<=MaxiSpin; j+=2){ // loop over all possible spin couplings |
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| 427 | lMin = std::abs(PiSpin-j)/2; |
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| 428 | #ifdef G4VERBOSE |
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| 429 | if (verboseLevel>1) |
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| 430 | G4cout << "-> checking 2*j=" << j << G4endl; |
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| 431 | #endif |
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| 432 | for (G4int l=lMin; l<=lMax; l++) { |
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| 433 | #ifdef G4VERBOSE |
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| 434 | if (verboseLevel>1) |
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| 435 | G4cout << " checking l=" << l << G4endl; |
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| 436 | #endif |
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| 437 | if (l%2==0) { |
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| 438 | if (PParity == D1Parity*D2Parity) { // check parity for this l |
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| 439 | return l; |
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| 440 | } |
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| 441 | } else { |
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| 442 | if (PParity == -1*D1Parity*D2Parity) { // check parity for this l |
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| 443 | return l; |
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| 444 | } |
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| 445 | } |
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| 446 | } |
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| 447 | } |
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| 448 | } else { |
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| 449 | G4Exception("G4VDecayChannel::GetAngularMomentum", |
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| 450 | "can not calculate", JustWarning, |
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| 451 | "Sorry, can't handle 3 particle decays (up to now)"); |
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| 452 | return 0; |
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| 453 | } |
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| 454 | G4Exception ("G4VDecayChannel::GetAngularMomentum", |
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| 455 | "can not calculate", JustWarning, |
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| 456 | "Can't find angular momentum for this decay!"); |
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| 457 | return 0; |
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| 458 | } |
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| 459 | |
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| 460 | void G4VDecayChannel::DumpInfo() |
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| 461 | { |
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| 462 | G4cout << " BR: " << rbranch << " [" << kinematics_name << "]"; |
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| 463 | G4cout << " : " ; |
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| 464 | for (G4int index=0; index < numberOfDaughters; index++) |
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| 465 | { |
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| 466 | if(daughters_name[index] != 0) { |
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| 467 | G4cout << " " << *(daughters_name[index]); |
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| 468 | } else { |
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| 469 | G4cout << " not defined "; |
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| 470 | } |
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| 471 | } |
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| 472 | G4cout << G4endl; |
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| 473 | } |
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| 474 | |
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| 475 | const G4String& G4VDecayChannel::GetNoName() const |
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| 476 | { |
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| 477 | return noName; |
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| 478 | } |
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