|Message: secondary particle tracks are generated with wrong times in G4NeutronHPFissionFS||Not Logged In (login)|
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I'm investigating delayed neutrons from fission reactions. These are the lines in file G4NeutronHPFissionFS.cc responsible for setting time of delayed neutrons' tracks as secondaries:
G4double time = -std::log(G4UniformRand())/theDecayConstants[i0-Prompt];
time += theTrack.GetGlobalTime();
G4HadSecondary * track = new G4HadSecondary( theNeutrons->operator( i0 ) );
As I understand it, at first some time delay constants are read, then they are added to GlobalTime - time point of fission proccess. At last a secondary is created at the result time, so track of delayed neutron must begin with time = -std::log(G4UniformRand())/theDecayConstants[i0-Prompt] + theTrack.GetGlobalTime().
When I do /tracking/verbose 2, I see that the delayed neutron track begins with Global time - time point of fission proccess so that delay is ignored. That confuses me greatly. I guess Geant 4 at some further step ignores the set time of a track and addresses to time point of Fission proccess - the proccess that has created the particle. But I'm too weak in tracking algoritms of Geant...
Any help will be highly appreciated.
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