[fluka-discuss]: energy information of fission products

From: Milena Quittnat <milena.eleonore.quittnat_at_cern.ch>
Date: Sun, 27 Oct 2013 10:50:50 +0000

Dear FLUKA experts,

I am studying hadron-irradiated inorganic scintillator materials (PbWO4, LYSO) with FLUKA.
For PbWO4, the hadrons undergo fission with lead or tungsten and the created nuclear fragments cause a very high ionisation along their path in the crystal. This leads to a permanent transmission loss.
Measurements show that the transmission loss (more precisely the radiation-induced absorption coefficient) as a function of the cumulative proton fluence is a factor 5 less for LYSO than for PbWO4. This factor is not directly reflected by the fission density or the displacement per atom of LYSO, which is only a factor 2 lower. The star density is even roughly the same for both materials. Apparently, the induced hadron damage is different for both materials and I would like to understand it a bit better.
Is there a way to extract the energy information of the fission fragments in FLUKA?
That would give me a good hint towards an explanation of the difference in the transmission loss.
It would be interesting to score for example the track length per star/fission as a function of a critical energy.
I was told that I could get the information in the user routine "fheavy" or "tracker", is that right?

Thank you very much for your help
Kind regards,

Milena Quittnat
Received on Sun Oct 27 2013 - 12:59:25 CET