Gabriele Cosmo
126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4DecayTable.cc 92057 2015-08-14 13:34:55Z gcosmo $
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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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// 27 July 1996 H.Kurashige
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// ----------------------------------------
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// implementation for STL 14 Feb. 2000 H.Kurashige
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// ------------------------------------------------------------
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#include "globals.hh"
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#include "G4DecayTable.hh"
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#include "Randomize.hh"
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G4DecayTable::G4DecayTable():parent(0)
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{
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channels = new G4VDecayChannelVector;
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}
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G4DecayTable::~G4DecayTable()
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{
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// remove and delete all contents
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G4VDecayChannelVector::iterator i;
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for (i = channels->begin(); i!= channels->end(); ++i) {
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delete (*i);
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}
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channels->clear();
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delete channels;
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channels = 0;
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}
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void G4DecayTable::Insert( G4VDecayChannel * aChannel){
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if (parent == 0) { parent = (G4ParticleDefinition*)(aChannel->GetParent()); }
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if (parent != aChannel->GetParent()) {
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#ifdef G4VERBOSE
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G4cout << " G4DecayTable::Insert :: bad G4VDecayChannel (mismatch parent) "
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<< " " << parent->GetParticleName()
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<< " input:" << aChannel->GetParent()->GetParticleName() << G4endl;
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#endif
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} else {
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G4double r = aChannel->GetBR();
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G4VDecayChannelVector::iterator i;
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for (i = channels->begin(); i!= channels->end(); ++i) {
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if (r > (*i)->GetBR()) {
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channels->insert(i,aChannel);
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return;
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}
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}
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channels->push_back(aChannel);
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}
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}
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G4VDecayChannel *G4DecayTable::SelectADecayChannel(G4double parentMass)
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{
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// check if contents exist
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if (channels->size()<1) return 0;
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if(parentMass<0.) parentMass=parent->GetPDGMass();
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const size_t MAX_LOOP = 10000;
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for (size_t loop_counter=0; loop_counter <MAX_LOOP; ++loop_counter){
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G4double sumBR = 0.0;
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G4double r= G4UniformRand();
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// select decay channel
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G4VDecayChannelVector::iterator i;
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for (i = channels->begin(); i!= channels->end(); ++i) {
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sumBR += (*i)->GetBR();
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if ( !((*i)->IsOKWithParentMass(parentMass)) ) continue;
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if (r < sumBR) return (*i);
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}
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}
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G4VDecayChannelVector::iterator i = channels->begin();
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return (*i);
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}
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void G4DecayTable::DumpInfo() const
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{
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G4cout << "G4DecayTable: " << parent->GetParticleName() << G4endl;
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G4int index =0;
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G4VDecayChannelVector::iterator i;
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for (i = channels->begin(); i!= channels->end(); ++i) {
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G4cout << index << ": ";
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(*i)->DumpInfo();
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index +=1;
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}
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G4cout << G4endl;
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}
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