-- Stefan E. Mueller Department of Information Services and Computing - Computational Science and Institute of Radiation Physics Helmholtz-Zentrum Dresden-Rossendorf Tel: +49 (0351) 260 3847 Stefan.Mueller_at_hzdr.de http://www.hzdr.de Vorstand: Prof. Dr. Sebastian M. Schmidt, Dr. Diana Stiller Vereinsregister: VR 1693 beim Amtsgericht Dresden On Thu, 4 Mar 2021, angeld wrote: > Dear FLUKA experts and users, > > In my last thread > (http://www.fluka.org/web_archive/earchive/new-fluka-discuss/18366.html) I > posted a question regarding the neutron fluence spectrum that we have > obtained and its graphical presentation. > My next step is to use it to study the activation of a spherical concrete > shell with the obtained neutron spectrum. So I decided to test it vs direct > simulation, i.e. with a simplified liquid target. The first issue is that > the specific activity of the generated isotopes of interest, in the case of > a neutron point source, is about 3-5 times higher than the direct > simulation. Is this result to be expected? > But what bothers me, even more, is that one of the isotopes 22Na is about > 6000 times higher in the case of a direct simulation. Is it plausible to be > generated via 24Mg(p, alpha)22Na reaction? There is 0.2% Mg in the > concrete. > I have attached the input files for the two simulations, the sorted > results, the source.f subroutine that I used and the file with the obtained > spectrum. > > Best regards, > Angel > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > >
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