Re: Dosimetry simulations : composition of materials of interest and results ?

From: Alberto Fasso' <fasso_at_slac.stanford.edu>
Date: Thu, 5 May 2011 06:09:42 -0700 (PDT)

Bonjour Sebastien,

I cannot answer all your questions, but I have found a bit of information
that can help you.

Wikipedia: Molecular formula of ABS: (C_8 H_8 C_4 H_6 C_3 H_3 N)_n
http://www.dynalabcorp.com/technical_info_abs.asp: Specific Gravity: 1.04

That should allow you to define a compound:

MATERIAL 0.0 0.0 1.04 0.0 0.0 0.0 ABS
COMPOUND 15.0 CARBON 17.0 HYDROGEN 1.0 NITROGEN ABS

CERN RPL:
http://www.oecd-nea.org/science/shielding/sinbad/rosti/rosti.htm
Schott-Jenner DOS2 Radiophotoluminescent dosimeters (RPL): glass rods 0.6 cm
long and with a 0.1 cm diameter, read with a Toshiba FGD-6 reader. The
composition is the following (in weight %): O-53.7%, P-33.4%, Al-4.6%, AG-3.7%,
Li-3.7%, B-0.9%
(same info in
http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/28/008/28008510.pdf

The sheet doesn't report the RPL density, but if you ask the NEA Data Bank
to give you the FLUKA input files of the Roesti Experiment in the SINBAD
data base (files that I don't have anymore) maybe you can find it there).
I guess you can assume the same density as aluminium.

Alberto

On Thu, 5 May 2011, wurth_at_ipno.in2p3.fr wrote:

>
> Dear fluka users,
>
> This is an indirectly fluka-linked question.
> I asumed that someone in the community of fluka users could answer to
> the following questions : of course I searched elsewhere, find some, but
> not everything I need in order to achieve a proper study.
> The manufacturer stays strangely silent to my demand...
>
> - Materials :
> 1) I'm looking for materials surrounding the french standard in RPL
> dosimetry => Does anybody know the composition+approx density of some
> mixture named "ABS resin" (acrylonitrile butadienne styrene) : I found
> some general formulae but nothing really usable. It is the plastic box
> surrounding the glass. If not, is there a similar material that could be
> defined instead ?
> 2) I'm looking as well the characteristics of some fine aluminum foil
> wrapping TLD dosimeters. It is not the usual aluminum foil, but this one
> will also do the trick, I can't find any useful info as well.
>
> - Previous results :
> 3) About results of such simulations : I found some made at CERN "RPL
> dosimeter at CERN" but it deals with energies far away of those I'm
> interested in : 50 keV to 1500-2000 keV at the most.
> I am not looking to copy the work of anyone, only to have some
> informations about the comparison (measurements versus fluka) at those
> energies.
>
> Does anyone want to share some information about those matters ?
>
> Thank you very much in advance.
>
> Best regards.
>
> Sebastien.
Received on Thu May 05 2011 - 16:37:36 CEST

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