Gabriele Cosmo
126 lines
5.1 KiB
C++
126 lines
5.1 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4Eta.cc,v 1.11 2001/10/28 05:01:33 kurasige Exp $
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// GEANT4 tag $Name: geant4-05-00 $
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//
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//
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// ----------------------------------------------------------------------
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// GEANT 4 class implementation file
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//
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// History: first implementation, based on object model of
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// 4th April 1996, G.Cosmo
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// H.Kurashige 7 Jul 96
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// ------------------------------------------------------------
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#include "g4std/fstream"
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#include "g4std/iomanip"
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#include "G4Eta.hh"
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#include "G4PhaseSpaceDecayChannel.hh"
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#include "G4DecayTable.hh"
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// ######################################################################
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// ### ETA ###
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// ######################################################################
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G4Eta::G4Eta(
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const G4String& aName, G4double mass,
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G4double width, G4double charge,
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G4int iSpin, G4int iParity,
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G4int iConjugation, G4int iIsospin,
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G4int iIsospin3, G4int gParity,
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const G4String& pType, G4int lepton,
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G4int baryon, G4int encoding,
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G4bool stable, G4double lifetime,
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G4DecayTable *decaytable )
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: G4VMeson( aName,mass,width,charge,iSpin,iParity,
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iConjugation,iIsospin,iIsospin3,gParity,pType,
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lepton,baryon,encoding,stable,lifetime,decaytable )
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{
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SetParticleSubType("eta");
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// Anti-particle of Eta is Eta itself
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SetAntiPDGEncoding(encoding);
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SetPDGStable(false);
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//create Decay Table
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G4DecayTable* table = GetDecayTable();
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if (table!=NULL) delete table;
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table = new G4DecayTable();
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// create decay channels
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G4VDecayChannel** mode = new G4VDecayChannel*[4];
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// eta -> gamma + gamma
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mode[0] = new G4PhaseSpaceDecayChannel("eta",0.393,2,"gamma","gamma");
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// eta -> pi0 + pi0 + pi0
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mode[1] = new G4PhaseSpaceDecayChannel("eta",0.321,3,"pi0","pi0","pi0");
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// eta -> pi0 + pi+ + pi-
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mode[2] = new G4PhaseSpaceDecayChannel("eta",0.232,3,"pi0","pi+","pi-");
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// eta -> gamma + pi+ + pi-
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mode[3] = new G4PhaseSpaceDecayChannel("eta",0.048,3,"gamma","pi+","pi-");
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for (G4int index=0; index <4; index++ ) table->Insert(mode[index]);
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delete [] mode;
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SetDecayTable(table);
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}
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// ......................................................................
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// ... static member definitions ...
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// ......................................................................
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//
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// Arguments for constructor are as follows
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// name mass width charge
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// 2*spin parity C-conjugation
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// 2*Isospin 2*Isospin3 G-parity
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// type lepton number baryon number PDG encoding
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// stable lifetime decay table
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G4Eta G4Eta::theEta(
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"eta", 0.54730*GeV, 1.18*keV, 0.0,
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0, -1, +1,
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0, 0, +1,
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"meson", 0, 0, 221,
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false, 0.0*ns, NULL
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);
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G4Eta* G4Eta::EtaDefinition(){return &theEta;}
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G4Eta* G4Eta::Eta(){return &theEta;}
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// **********************************************************************
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// **************************** SetCuts *********************************
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// **********************************************************************
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void G4Eta::CalcEnergyCuts( const G4Material* )
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{
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// Set Energy Cut values to lowest for all materials
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SetEnergyCutValues(LowestEnergy);
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}
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