Dear Atiq,
Are you sure that the quantity you really need is a cross section, i.e.,
a measure of the likelihood of producing your isotope of interest in an
individual inelastic hadronic interaction?
- If so, a (the?) way FLUKA users can approach this information is by
setting up a thin layer of the target material in question and using
a USRYIELD scoring card (an AUXSCORE card may be necessary to filter
by produced particle species, in particular for heavy ions of given Z
and A). On top, one is pretty much forced to bias (i.e. shorten) the
inelastic interaction length with the LAM-BIAS card, keep an eye on
the PHYSICS cards etc., along with the considerations in this thread
http://www.fluka.org/web_archive/earchive/new-fluka-discuss/6056.html
Thus, there are several bits and pieces to consider. If a cross
section is really what you want, I would first invest time examining
the FLUKA course lectures on the relevant topics mentioned above
before blindly running example input files.
- Instead, if it suffices for you to examine e.g. the number of
residual nuclei produced (or, rather, stopped) in a bulk material per
incoming proton, you may start with the basic template (say,
New->basic in Flair) and by considering the RESNUCLE card (you'll get
the results in residual nuclei per primary and, if you have indicated
the target region volume, additionally per cm^3). If you look in the
course lectures you'll see that you will at least have to include the
cards
IONTRANS -2.0
PHYSICS 3.0 EVAPORAT
PHYSICS 1.0 COALESCE
With kind regards,
Cesc
On Tue, Jul 23 2019, at 12:12 +0800, Atiq Ur Rahman wrote:
>
>Dear Users,
>I am a beginner and want to use the Fluka. I also have Flair installed on
>my system.
>I need to find the cross section of the positron emitter (C-10, O15 and
>C11) as the Proton beam of the a 130 MeV hit the PMMA target.
>Can you help me how to take a start? Is there any examples. Previously, I
>had experience on Gate which had some initial examples. Is there any source
>where I can get some example codes and then Edit them?
>Regards
>Atiq
--
Francesc Salvat Pujol
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
Tel: +41 22 76 64011
Fax: +41 22 76 69474
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Received on Wed Jul 24 2019 - 12:09:33 CEST