Re: [fluka-discuss]: Biasing Air Activation

From: Felix Ernst Horst <>
Date: Thu, 23 Apr 2015 14:59:18 +0200


Hello Alberto,

Thank you very much for that data. I will calculate the activation with
both datasets and compare the results. If i manage to obtain activation
yields with good statistics directly by FLUKA simulations a comparison
to the calculated results will also be very interesting.

Best regards


Am 2015-04-23 11:25, schrieb Fasso, Alberto:

> -------------------------
> Hi Felix,
> you can find in attachment the evaluations I have made of the 16O(gamma,n)15O and 14N(gamma,n)13N cross sections.
> They are shown in the two pdf files. The experimental values are listed in the two *.exp files and the fitted cross sections in
> the two *.curve files.
> Those you have found (JENDL and IAEA) are just as good for your purposes. The fine structure (if it is really there) cannot change your results by a factor of two! But you can try, and then adopt those which give the highest results. In radiation
> protection, if there are doubts it is always best to be conservative.
> Alberto
> FROM: Stefan Roesler <>
> SENT: Wednesday, April 22, 2015 6:53 PM
> TO: Vittorio Boccone; Felix Ernst Horst
> CC: Fasso, Alberto
> SUBJECT: RE: Re: [fluka-discuss]: Biasing Air Activation
> Dear all
> Sorry, I don't have evaluated cross sections for air activation by photons.
> Cheers
> Stefan
> FROM: Vittorio Boccone []
> SENT: 22 April 2015 20:24
> TO: Felix Ernst Horst
> CC:;; Stefan Roesler
> SUBJECT: Re: Re: [fluka-discuss]: Biasing Air Activation
> Dear Felix,
> I have no direct experience to answer to this question in a satisfactory way. I forwarded the question to Alberto or Stefan who for sure have more experience in the field.
> Best,
> Vittorio
> On Wed, Apr 22, 2015 at 11:06 AM, Felix Ernst Horst <> wrote:
> A question besides FLUKA: Do you have a hint where to look for well-resolved and evaluated cross section data for the purpose of direct determination of the activation yield by folding it with the photon spectrum? The data i found in the JENDL library for O-16 and N-13 looks very smooth and seems not to include the fine structure as e.g. shown in plots in "P. Oblozinsky, Handbook on photonuclear data for applications: Cross-sections and spectra, IAEA-TECDOC-1178 (2000).". For my photon spectrum with a cutoff energy of 18 MeV the choice of which cross section i use might effect the result by factor of two or more i guess.

Felix Horst, B.Sc.
Institut für Medizinische Physik und Strahlenschutz (IMPS)
Technische Hochschule Mittelhessen
Wiesenstr. 14, 35390 Gießen
Raum D10.12a
Telefon: 0641 309 2642
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Received on Thu Apr 23 2015 - 16:27:08 CEST

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