Re: Time evolution of Dose Rate using USRTRACK

Mina,

I think that what happens is that you are killing (decay) photons below 1.0 6 MeV.
Check your EMFCUT and RADDECAY cards and/or output file to see what is the energy cutoff for photons.

On Sep 21, 2011, at 10:38 AM, Mina Nozar wrote:

> Hi everyone,
>
> I have come across an odd behaviour in the output of USRTRACK scoring when I score dose rate in a given volume. Using
> the DCYSCORE card, I look at gamma dose rate at different cooling times. I am including the cards for two cooling times
> only (0 sec and 30 days after EOB).
>
> USRTRACK -1. DOSE-EQ -35. rTaConv 100.DEPTa0s
> USRTRACK 0.05 1E-4 &
> DCYSCORE 5. DEPTa0s USRTRACK
>
> USRTRACK -1. DOSE-EQ -36. rTaConv 100.DEPTa30d
> USRTRACK 0.05 1E-4 &
> DCYSCORE 9. DEPTa30d USRTRACK
>
> AUXSCORE USRTRACK PHOTON DEPTa0s DEPTa30d AMB74
>
> When looking through the usrtrack output file for either unit (I have attached test_usrtrack_35_tab.lis),
> I see a series of energy intervals with zero for dose rate and rel. error, before the results are shown for the energy
> interval I selected in the scoring.
>
> Does anyone know why this happens?
>
> Thanks in advance,
> Mina
>
Received on Sun Sep 25 2011 - 13:00:15 CEST