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Question customize decay times 

Forum: Hadronic Processes
Date: 11 May, 2016
From: Tabea <Tabea>

Hello,

I'm trying to find a way to change the decay time of K40. The reason is that I need to find out the flight time of Cherenkov-photons, which are produced by the electron of the K40 beta decay. I get the time with

aStep->GetPreStepPoint()->GetGlobalTime().

The Problem is that the precision of the G4double GetGlobalTime() is not enough to dissolve the flight time (in the ns range), because it is much shorter than the decay time (in the e+25 ns range). I already tried to change the decay time in the file

Geant4-10.2.1/data/RadioactiveDecay4.3.1/z19a40

of the geant4 source code, but Geant4 still uses the original time. I tried as well to change the time in the gps file by using

/grdm/setRadioactiveDecayFile 19 40 ../aux/UserRadData_z19.a40,

where z19.a40 is a user defined file which contains amongst others the decay time. Does anybody know another way to change the decay time or why it doesn't work this way?

Thanks in advance, Tabea

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1 None: Re: customize decay times   (Dennis H. Wright - 14 Jun, 2016)
(_ None: Re: customize decay times   (Tabea - 22 Jun, 2016)
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