[819] | 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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| 27 | // $Id: G4eLowEnergyLoss.cc,v 1.35 2006/06/29 19:42:06 gunter Exp $ |
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[961] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[819] | 29 | // |
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| 30 | // ----------------------------------------------------------- |
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| 31 | // GEANT 4 class implementation file |
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| 32 | // |
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| 33 | // History: based on object model of |
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| 34 | // 2nd December 1995, G.Cosmo |
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| 35 | // ---------- G4eLowEnergyLoss physics process ----------- |
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| 36 | // by Laszlo Urban, 20 March 1997 |
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| 37 | // ************************************************************** |
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| 38 | // It calculates the energy loss of e+/e-. |
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| 39 | // -------------------------------------------------------------- |
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| 40 | // |
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| 41 | // 08-05-97: small changes by L.Urban |
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| 42 | // 27-05-98: several bugs and inconsistencies are corrected, |
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| 43 | // new table (the inverse of the range table) added , |
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| 44 | // AlongStepDoit uses now this new table. L.Urban |
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| 45 | // 08-09-98: cleanup |
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| 46 | // 24-09-98: rndmStepFlag false by default (no randomization of the step) |
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| 47 | // 14-10-98: messenger file added. |
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| 48 | // 16-10-98: public method SetStepFunction() |
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| 49 | // 20-01-99: important correction in AlongStepDoIt , L.Urban |
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| 50 | // 10/02/00 modifications , new e.m. structure, L.Urban |
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| 51 | // 11/04/00: Bug fix in dE/dx fluctuation simulation, Veronique Lefebure |
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| 52 | // 19-09-00 change of fluctuation sampling V.Ivanchenko |
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| 53 | // 20/09/00 update fluctuations V.Ivanchenko |
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| 54 | // 18/10/01 add fluorescence AlongStepDoIt V.Ivanchenko |
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| 55 | // 18/10/01 Revision to improve code quality and consistency with design, MGP |
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| 56 | // 19/10/01 update according to new design, V.Ivanchenko |
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| 57 | // 24/10/01 MGP - Protection against negative energy loss in AlongStepDoIt |
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| 58 | // 26/10/01 VI Clean up access to deexcitation |
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| 59 | // 23/11/01 VI Move static member-functions from header to source |
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| 60 | // 28/05/02 VI Remove flag fStopAndKill |
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| 61 | // 03/06/02 MGP - Restore fStopAndKill |
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| 62 | // 28/10/02 VI Optimal binning for dE/dx |
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| 63 | // 21/01/03 VI cut per region |
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| 64 | // 01/06/04 VI check if stopped particle has AtRest processes |
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| 65 | // |
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| 66 | // -------------------------------------------------------------- |
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| 67 | |
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| 68 | #include "G4eLowEnergyLoss.hh" |
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| 69 | #include "G4EnergyLossMessenger.hh" |
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| 70 | #include "G4Poisson.hh" |
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| 71 | #include "G4ProductionCutsTable.hh" |
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| 72 | |
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| 73 | // |
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| 74 | |
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| 75 | // Initialisation of static data members |
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| 76 | // ------------------------------------- |
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| 77 | // Contributing processes : ion.loss + soft brems->NbOfProcesses is initialized |
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| 78 | // to 2 . YOU DO NOT HAVE TO CHANGE this variable for a 'normal' run. |
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| 79 | // |
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| 80 | // You have to change NbOfProcesses if you invent a new process contributing |
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| 81 | // to the continuous energy loss. |
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| 82 | // The NbOfProcesses data member can be changed using the (public static) |
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| 83 | // functions Get/Set/Plus/MinusNbOfProcesses (see G4eLowEnergyLoss.hh) |
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| 84 | |
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| 85 | G4int G4eLowEnergyLoss::NbOfProcesses = 2; |
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| 86 | |
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| 87 | G4int G4eLowEnergyLoss::CounterOfElectronProcess = 0; |
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| 88 | G4int G4eLowEnergyLoss::CounterOfPositronProcess = 0; |
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| 89 | G4PhysicsTable** G4eLowEnergyLoss::RecorderOfElectronProcess = |
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| 90 | new G4PhysicsTable*[10]; |
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| 91 | G4PhysicsTable** G4eLowEnergyLoss::RecorderOfPositronProcess = |
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| 92 | new G4PhysicsTable*[10]; |
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| 93 | |
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| 94 | |
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| 95 | G4PhysicsTable* G4eLowEnergyLoss::theDEDXElectronTable = 0; |
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| 96 | G4PhysicsTable* G4eLowEnergyLoss::theDEDXPositronTable = 0; |
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| 97 | G4PhysicsTable* G4eLowEnergyLoss::theRangeElectronTable = 0; |
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| 98 | G4PhysicsTable* G4eLowEnergyLoss::theRangePositronTable = 0; |
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| 99 | G4PhysicsTable* G4eLowEnergyLoss::theInverseRangeElectronTable = 0; |
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| 100 | G4PhysicsTable* G4eLowEnergyLoss::theInverseRangePositronTable = 0; |
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| 101 | G4PhysicsTable* G4eLowEnergyLoss::theLabTimeElectronTable = 0; |
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| 102 | G4PhysicsTable* G4eLowEnergyLoss::theLabTimePositronTable = 0; |
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| 103 | G4PhysicsTable* G4eLowEnergyLoss::theProperTimeElectronTable = 0; |
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| 104 | G4PhysicsTable* G4eLowEnergyLoss::theProperTimePositronTable = 0; |
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| 105 | |
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| 106 | G4PhysicsTable* G4eLowEnergyLoss::theeRangeCoeffATable = 0; |
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| 107 | G4PhysicsTable* G4eLowEnergyLoss::theeRangeCoeffBTable = 0; |
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| 108 | G4PhysicsTable* G4eLowEnergyLoss::theeRangeCoeffCTable = 0; |
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| 109 | G4PhysicsTable* G4eLowEnergyLoss::thepRangeCoeffATable = 0; |
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| 110 | G4PhysicsTable* G4eLowEnergyLoss::thepRangeCoeffBTable = 0; |
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| 111 | G4PhysicsTable* G4eLowEnergyLoss::thepRangeCoeffCTable = 0; |
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| 112 | |
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| 113 | G4double G4eLowEnergyLoss::LowerBoundEloss = 10.*eV ; |
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| 114 | G4double G4eLowEnergyLoss::UpperBoundEloss = 100.*GeV ; |
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| 115 | G4int G4eLowEnergyLoss::NbinEloss = 360 ; |
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| 116 | G4double G4eLowEnergyLoss::RTable ; |
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| 117 | G4double G4eLowEnergyLoss::LOGRTable ; |
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| 118 | |
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| 119 | |
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| 120 | G4EnergyLossMessenger* G4eLowEnergyLoss::eLossMessenger = 0; |
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| 121 | |
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| 122 | // |
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| 123 | |
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| 124 | // constructor and destructor |
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| 125 | |
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| 126 | G4eLowEnergyLoss::G4eLowEnergyLoss(const G4String& processName) |
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| 127 | : G4VeLowEnergyLoss (processName), |
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| 128 | theLossTable(0), |
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| 129 | MinKineticEnergy(1.*eV), |
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| 130 | Charge(-1.), |
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| 131 | lastCharge(0.), |
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| 132 | theDEDXTable(0), |
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| 133 | CounterOfProcess(0), |
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| 134 | RecorderOfProcess(0), |
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| 135 | fdEdx(0), |
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| 136 | fRangeNow(0), |
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| 137 | linLossLimit(0.05), |
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| 138 | theFluo(false) |
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| 139 | { |
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| 140 | |
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| 141 | //create (only once) EnergyLoss messenger |
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| 142 | if(!eLossMessenger) eLossMessenger = new G4EnergyLossMessenger(); |
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| 143 | } |
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| 144 | |
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| 145 | // |
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| 146 | |
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| 147 | G4eLowEnergyLoss::~G4eLowEnergyLoss() |
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| 148 | { |
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| 149 | if (theLossTable) |
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| 150 | { |
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| 151 | theLossTable->clearAndDestroy(); |
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| 152 | delete theLossTable; |
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| 153 | } |
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| 154 | } |
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| 155 | |
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| 156 | void G4eLowEnergyLoss::SetNbOfProcesses(G4int nb) |
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| 157 | { |
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| 158 | NbOfProcesses=nb; |
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| 159 | } |
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| 160 | |
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| 161 | void G4eLowEnergyLoss::PlusNbOfProcesses() |
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| 162 | { |
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| 163 | NbOfProcesses++; |
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| 164 | } |
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| 165 | |
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| 166 | void G4eLowEnergyLoss::MinusNbOfProcesses() |
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| 167 | { |
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| 168 | NbOfProcesses--; |
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| 169 | } |
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| 170 | |
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| 171 | G4int G4eLowEnergyLoss::GetNbOfProcesses() |
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| 172 | { |
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| 173 | return NbOfProcesses; |
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| 174 | } |
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| 175 | |
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| 176 | void G4eLowEnergyLoss::SetLowerBoundEloss(G4double val) |
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| 177 | { |
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| 178 | LowerBoundEloss=val; |
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| 179 | } |
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| 180 | |
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| 181 | void G4eLowEnergyLoss::SetUpperBoundEloss(G4double val) |
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| 182 | { |
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| 183 | UpperBoundEloss=val; |
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| 184 | } |
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| 185 | |
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| 186 | void G4eLowEnergyLoss::SetNbinEloss(G4int nb) |
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| 187 | { |
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| 188 | NbinEloss=nb; |
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| 189 | } |
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| 190 | |
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| 191 | G4double G4eLowEnergyLoss::GetLowerBoundEloss() |
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| 192 | { |
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| 193 | return LowerBoundEloss; |
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| 194 | } |
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| 195 | |
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| 196 | G4double G4eLowEnergyLoss::GetUpperBoundEloss() |
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| 197 | { |
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| 198 | return UpperBoundEloss; |
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| 199 | } |
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| 200 | |
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| 201 | G4int G4eLowEnergyLoss::GetNbinEloss() |
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| 202 | { |
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| 203 | return NbinEloss; |
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| 204 | } |
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| 205 | // |
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| 206 | |
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| 207 | void G4eLowEnergyLoss::BuildDEDXTable( |
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| 208 | const G4ParticleDefinition& aParticleType) |
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| 209 | { |
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| 210 | ParticleMass = aParticleType.GetPDGMass(); |
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| 211 | Charge = aParticleType.GetPDGCharge()/eplus; |
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| 212 | |
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| 213 | // calculate data members LOGRTable,RTable first |
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| 214 | |
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| 215 | G4double lrate = std::log(UpperBoundEloss/LowerBoundEloss); |
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| 216 | LOGRTable=lrate/NbinEloss; |
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| 217 | RTable =std::exp(LOGRTable); |
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| 218 | // Build energy loss table as a sum of the energy loss due to the |
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| 219 | // different processes. |
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| 220 | // |
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| 221 | |
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| 222 | const G4ProductionCutsTable* theCoupleTable= |
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| 223 | G4ProductionCutsTable::GetProductionCutsTable(); |
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| 224 | size_t numOfCouples = theCoupleTable->GetTableSize(); |
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| 225 | |
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| 226 | // create table for the total energy loss |
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| 227 | |
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| 228 | if (&aParticleType==G4Electron::Electron()) |
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| 229 | { |
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| 230 | RecorderOfProcess=RecorderOfElectronProcess; |
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| 231 | CounterOfProcess=CounterOfElectronProcess; |
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| 232 | if (CounterOfProcess == NbOfProcesses) |
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| 233 | { |
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| 234 | if (theDEDXElectronTable) |
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| 235 | { |
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| 236 | theDEDXElectronTable->clearAndDestroy(); |
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| 237 | delete theDEDXElectronTable; |
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| 238 | } |
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| 239 | theDEDXElectronTable = new G4PhysicsTable(numOfCouples); |
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| 240 | theDEDXTable = theDEDXElectronTable; |
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| 241 | } |
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| 242 | } |
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| 243 | if (&aParticleType==G4Positron::Positron()) |
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| 244 | { |
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| 245 | RecorderOfProcess=RecorderOfPositronProcess; |
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| 246 | CounterOfProcess=CounterOfPositronProcess; |
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| 247 | if (CounterOfProcess == NbOfProcesses) |
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| 248 | { |
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| 249 | if (theDEDXPositronTable) |
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| 250 | { |
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| 251 | theDEDXPositronTable->clearAndDestroy(); |
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| 252 | delete theDEDXPositronTable; |
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| 253 | } |
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| 254 | theDEDXPositronTable = new G4PhysicsTable(numOfCouples); |
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| 255 | theDEDXTable = theDEDXPositronTable; |
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| 256 | } |
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| 257 | } |
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| 258 | |
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| 259 | if (CounterOfProcess == NbOfProcesses) |
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| 260 | { |
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| 261 | // fill the tables |
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| 262 | // loop for materials |
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| 263 | G4double LowEdgeEnergy , Value; |
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| 264 | G4bool isOutRange; |
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| 265 | G4PhysicsTable* pointer; |
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| 266 | |
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| 267 | for (size_t J=0; J<numOfCouples; J++) |
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| 268 | { |
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| 269 | // create physics vector and fill it |
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| 270 | |
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| 271 | G4PhysicsLogVector* aVector = new G4PhysicsLogVector( |
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| 272 | LowerBoundEloss, UpperBoundEloss, NbinEloss); |
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| 273 | |
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| 274 | // loop for the kinetic energy |
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| 275 | for (G4int i=0; i<NbinEloss; i++) |
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| 276 | { |
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| 277 | LowEdgeEnergy = aVector->GetLowEdgeEnergy(i) ; |
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| 278 | //here comes the sum of the different tables created by the |
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| 279 | //processes (ionisation,bremsstrahlung,etc...) |
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| 280 | Value = 0.; |
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| 281 | for (G4int process=0; process < NbOfProcesses; process++) |
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| 282 | { |
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| 283 | pointer= RecorderOfProcess[process]; |
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| 284 | Value += (*pointer)[J]->GetValue(LowEdgeEnergy,isOutRange); |
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| 285 | } |
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| 286 | |
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| 287 | aVector->PutValue(i,Value) ; |
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| 288 | } |
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| 289 | |
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| 290 | theDEDXTable->insert(aVector) ; |
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| 291 | |
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| 292 | } |
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| 293 | |
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| 294 | |
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| 295 | //reset counter to zero |
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| 296 | if (&aParticleType==G4Electron::Electron()) CounterOfElectronProcess=0; |
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| 297 | if (&aParticleType==G4Positron::Positron()) CounterOfPositronProcess=0; |
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| 298 | |
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| 299 | ParticleMass = aParticleType.GetPDGMass(); |
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| 300 | |
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| 301 | if (&aParticleType==G4Electron::Electron()) |
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| 302 | { |
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| 303 | // Build range table |
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| 304 | theRangeElectronTable = BuildRangeTable(theDEDXElectronTable, |
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| 305 | theRangeElectronTable, |
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| 306 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 307 | |
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| 308 | // Build lab/proper time tables |
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| 309 | theLabTimeElectronTable = BuildLabTimeTable(theDEDXElectronTable, |
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| 310 | theLabTimeElectronTable, |
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| 311 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 312 | theProperTimeElectronTable = BuildProperTimeTable(theDEDXElectronTable, |
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| 313 | theProperTimeElectronTable, |
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| 314 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 315 | |
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| 316 | // Build coeff tables for the energy loss calculation |
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| 317 | theeRangeCoeffATable = BuildRangeCoeffATable(theRangeElectronTable, |
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| 318 | theeRangeCoeffATable, |
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| 319 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 320 | |
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| 321 | theeRangeCoeffBTable = BuildRangeCoeffBTable(theRangeElectronTable, |
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| 322 | theeRangeCoeffBTable, |
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| 323 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 324 | |
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| 325 | theeRangeCoeffCTable = BuildRangeCoeffCTable(theRangeElectronTable, |
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| 326 | theeRangeCoeffCTable, |
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| 327 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 328 | |
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| 329 | // invert the range table |
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| 330 | theInverseRangeElectronTable = BuildInverseRangeTable(theRangeElectronTable, |
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| 331 | theeRangeCoeffATable, |
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| 332 | theeRangeCoeffBTable, |
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| 333 | theeRangeCoeffCTable, |
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| 334 | theInverseRangeElectronTable, |
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| 335 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 336 | } |
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| 337 | if (&aParticleType==G4Positron::Positron()) |
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| 338 | { |
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| 339 | // Build range table |
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| 340 | theRangePositronTable = BuildRangeTable(theDEDXPositronTable, |
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| 341 | theRangePositronTable, |
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| 342 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 343 | |
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| 344 | |
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| 345 | // Build lab/proper time tables |
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| 346 | theLabTimePositronTable = BuildLabTimeTable(theDEDXPositronTable, |
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| 347 | theLabTimePositronTable, |
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| 348 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 349 | theProperTimePositronTable = BuildProperTimeTable(theDEDXPositronTable, |
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| 350 | theProperTimePositronTable, |
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| 351 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 352 | |
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| 353 | // Build coeff tables for the energy loss calculation |
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| 354 | thepRangeCoeffATable = BuildRangeCoeffATable(theRangePositronTable, |
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| 355 | thepRangeCoeffATable, |
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| 356 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 357 | |
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| 358 | thepRangeCoeffBTable = BuildRangeCoeffBTable(theRangePositronTable, |
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| 359 | thepRangeCoeffBTable, |
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| 360 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 361 | |
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| 362 | thepRangeCoeffCTable = BuildRangeCoeffCTable(theRangePositronTable, |
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| 363 | thepRangeCoeffCTable, |
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| 364 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 365 | |
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| 366 | // invert the range table |
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| 367 | theInverseRangePositronTable = BuildInverseRangeTable(theRangePositronTable, |
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| 368 | thepRangeCoeffATable, |
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| 369 | thepRangeCoeffBTable, |
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| 370 | thepRangeCoeffCTable, |
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| 371 | theInverseRangePositronTable, |
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| 372 | LowerBoundEloss,UpperBoundEloss,NbinEloss); |
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| 373 | } |
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| 374 | |
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| 375 | if(verboseLevel > 1) { |
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| 376 | G4cout << (*theDEDXElectronTable) << G4endl; |
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| 377 | } |
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| 378 | |
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| 379 | |
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| 380 | // make the energy loss and the range table available |
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| 381 | G4EnergyLossTables::Register(&aParticleType, |
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| 382 | (&aParticleType==G4Electron::Electron())? |
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| 383 | theDEDXElectronTable: theDEDXPositronTable, |
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| 384 | (&aParticleType==G4Electron::Electron())? |
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| 385 | theRangeElectronTable: theRangePositronTable, |
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| 386 | (&aParticleType==G4Electron::Electron())? |
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| 387 | theInverseRangeElectronTable: theInverseRangePositronTable, |
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| 388 | (&aParticleType==G4Electron::Electron())? |
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| 389 | theLabTimeElectronTable: theLabTimePositronTable, |
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| 390 | (&aParticleType==G4Electron::Electron())? |
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| 391 | theProperTimeElectronTable: theProperTimePositronTable, |
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| 392 | LowerBoundEloss, UpperBoundEloss, 1.,NbinEloss); |
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| 393 | } |
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| 394 | } |
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| 395 | |
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| 396 | // |
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| 397 | |
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| 398 | G4VParticleChange* G4eLowEnergyLoss::AlongStepDoIt( const G4Track& trackData, |
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| 399 | const G4Step& stepData) |
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| 400 | { |
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| 401 | // compute the energy loss after a Step |
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| 402 | |
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| 403 | static const G4double faclow = 1.5 ; |
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| 404 | |
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| 405 | // get particle and material pointers from trackData |
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| 406 | const G4DynamicParticle* aParticle = trackData.GetDynamicParticle(); |
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| 407 | G4double E = aParticle->GetKineticEnergy(); |
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| 408 | |
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| 409 | const G4MaterialCutsCouple* couple = trackData.GetMaterialCutsCouple(); |
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| 410 | |
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| 411 | G4double Step = stepData.GetStepLength(); |
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| 412 | |
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| 413 | aParticleChange.Initialize(trackData); |
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| 414 | //fParticleChange.Initialize(trackData); |
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| 415 | |
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| 416 | G4double MeanLoss, finalT; |
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| 417 | |
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| 418 | if (E < MinKineticEnergy) finalT = 0.; |
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| 419 | |
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| 420 | else if ( E< faclow*LowerBoundEloss) |
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| 421 | { |
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| 422 | if (Step >= fRangeNow) finalT = 0.; |
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| 423 | // else finalT = E*(1.-Step/fRangeNow) ; |
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| 424 | else finalT = E*(1.-std::sqrt(Step/fRangeNow)) ; |
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| 425 | } |
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| 426 | |
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| 427 | else if (E>=UpperBoundEloss) finalT = E - Step*fdEdx; |
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| 428 | |
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| 429 | else if (Step >= fRangeNow) finalT = 0.; |
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| 430 | |
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| 431 | else |
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| 432 | { |
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| 433 | if(Step/fRangeNow < linLossLimit) finalT = E-Step*fdEdx ; |
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| 434 | else |
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| 435 | { |
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| 436 | if (Charge<0.) finalT = G4EnergyLossTables::GetPreciseEnergyFromRange |
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| 437 | (G4Electron::Electron(),fRangeNow-Step,couple); |
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| 438 | else finalT = G4EnergyLossTables::GetPreciseEnergyFromRange |
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| 439 | (G4Positron::Positron(),fRangeNow-Step,couple); |
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| 440 | } |
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| 441 | } |
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| 442 | |
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| 443 | if(finalT < MinKineticEnergy) finalT = 0. ; |
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| 444 | |
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| 445 | MeanLoss = E-finalT ; |
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| 446 | |
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| 447 | //now the loss with fluctuation |
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| 448 | if ((EnlossFlucFlag) && (finalT > 0.) && (finalT < E)&&(E > LowerBoundEloss)) |
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| 449 | { |
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| 450 | finalT = E-GetLossWithFluct(aParticle,couple,MeanLoss,Step); |
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| 451 | if (finalT < 0.) finalT = 0.; |
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| 452 | } |
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| 453 | |
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| 454 | // kill the particle if the kinetic energy <= 0 |
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| 455 | if (finalT <= 0. ) |
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| 456 | { |
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| 457 | finalT = 0.; |
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| 458 | if(Charge > 0.0) aParticleChange.ProposeTrackStatus(fStopButAlive); |
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| 459 | else aParticleChange.ProposeTrackStatus(fStopAndKill); |
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| 460 | } |
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| 461 | |
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| 462 | G4double edep = E - finalT; |
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| 463 | |
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| 464 | aParticleChange.ProposeEnergy(finalT); |
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| 465 | |
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| 466 | // Deexcitation of ionised atoms |
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| 467 | std::vector<G4DynamicParticle*>* deexcitationProducts = 0; |
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| 468 | if (theFluo) deexcitationProducts = DeexciteAtom(couple,E,edep); |
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| 469 | |
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| 470 | size_t nSecondaries = 0; |
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| 471 | if (deexcitationProducts != 0) nSecondaries = deexcitationProducts->size(); |
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| 472 | aParticleChange.SetNumberOfSecondaries(nSecondaries); |
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| 473 | |
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| 474 | if (nSecondaries > 0) { |
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| 475 | |
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| 476 | const G4StepPoint* preStep = stepData.GetPreStepPoint(); |
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| 477 | const G4StepPoint* postStep = stepData.GetPostStepPoint(); |
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| 478 | G4ThreeVector r = preStep->GetPosition(); |
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| 479 | G4ThreeVector deltaR = postStep->GetPosition(); |
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| 480 | deltaR -= r; |
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| 481 | G4double t = preStep->GetGlobalTime(); |
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| 482 | G4double deltaT = postStep->GetGlobalTime(); |
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| 483 | deltaT -= t; |
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| 484 | G4double time, q; |
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| 485 | G4ThreeVector position; |
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| 486 | |
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| 487 | for (size_t i=0; i<nSecondaries; i++) { |
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| 488 | |
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| 489 | G4DynamicParticle* part = (*deexcitationProducts)[i]; |
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| 490 | if (part != 0) { |
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| 491 | G4double eSecondary = part->GetKineticEnergy(); |
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| 492 | edep -= eSecondary; |
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| 493 | if (edep > 0.) |
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| 494 | { |
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| 495 | q = G4UniformRand(); |
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| 496 | time = deltaT*q + t; |
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| 497 | position = deltaR*q; |
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| 498 | position += r; |
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| 499 | G4Track* newTrack = new G4Track(part, time, position); |
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| 500 | aParticleChange.AddSecondary(newTrack); |
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| 501 | } |
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| 502 | else |
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| 503 | { |
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| 504 | edep += eSecondary; |
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| 505 | delete part; |
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| 506 | part = 0; |
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| 507 | } |
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| 508 | } |
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| 509 | } |
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| 510 | } |
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| 511 | delete deexcitationProducts; |
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| 512 | |
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| 513 | aParticleChange.ProposeLocalEnergyDeposit(edep); |
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| 514 | |
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| 515 | return &aParticleChange; |
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| 516 | } |
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| 517 | |
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| 518 | // |
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| 519 | |
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