Hello Emilio,
The cross sections used by Fluka are provided in the Fluka manual
(link to online version here
<
http://www.fluka.org/fluka.php?id=man_onl&sub=96>). Are you using
LOW-MAT card to specify the neutron cross section for deuterium? If you
are, you are probably setting deuterium cross section to the one named
2H D2O bound Deuterium
which you can see in the website is the one provided by ENDF/B-VII.0,
which you can access online through ENDF website
<
https://www-nds.iaea.org/exfor/endf.htm> from /Archival/ libraries (2006).
Regards,
Leonel Morejon
On 28.1.2016 14:13, Emilio Ciuffoli wrote:
> Dear Fluka experts,
>
> I am simulating neutrons in heavy water and more are escaping than I'd
> expect. So I had FLUKA's LOW-NEUT print out the deuterium-neutron
> cross sections at room temperature. It gave me a total cross section
> of 6 barns when bound in heavy water, which seems lower than the
> answer that I found in various articles of 7.6 barns. However I really
> care about the absorption cross section. Since this is 10,000 times
> smaller than the total cross section, FLUKA rounds the nonabsorption
> rate to 1.000. So I learn nothing about the absorption cross section.
>
> Could somebody tell me the neutron absorption cross section on
> deuterium (bound, at room temperature) used by FLUKA? Or how to look
> these cross sections up with more than 3 significant figures so that I
> can get the first nonzero digit of the absorption cross section?
>
> Thank you,
> Emilio
__________________________________________________________________________
You can manage unsubscription from this mailing list at
https://www.fluka.org/fluka.php?id=acc_info
Received on Thu Jan 28 2016 - 17:18:33 CET