Dear Javier,
1st. Scoring quantities that uses all particles in USRBDX, USRTRACK...
for low energy neutrons (20MeV) will use always the neutron group structure,
while for all other particles it will use the binning that you requested.
Therefore you see in your case 260 n groups +400 bins
2nd. FLUKA doesn't have the impact ionization cross section for protons
so what you get at high energies of protons is indirectly through other
processes.
Vasilis
________________________________
From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of Javier Lozano Díaz [jlozano_at_clpu.es]
Sent: Tuesday, June 27, 2017 08:31
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Problems with USRBDX
Hello Fluka experts.
I was simulated a shielding with an electron beam and I use some USRBDX scoring cards. The problem is when I check the result of tab.list or sum.list of this detectors and I find more binns in Energy than I have written in the card. For example if I put 1200 fluka count 1650, I have reduced to 400 but then appears 660, if you check the datas one by one you will find binn with the same energy interval (for example 2.3E-2 to 2.3E-2). I don't know why.
I want to calculate de dose before and after the shielding and I'm trying to sum all the points in each interval of energy but I find that after the first layer I have the same dose that after the shielding element. This is a good way for obtain the dose?
I add some folders
2 nd problem: k alpha line of copper
In the same configuration (changing the first layer for copper) I send a proton beam on a copper target in order to see the k alpha line (8.02 KeV). I am able to see the k alpha line with a proton energy more than 30 MeV. Under this energy it is impossible to see the k alpha line.
The card I am using to see the k alpha line are the following: EMF, EMFFLUO, EMFCUT prod, EMFCUT transport.
I would like to know why I can not see them with lower energy and which card should I add to see k alpha with a proton beam less than 30 MeV and if possible for 5 MeV proton beam, on the other hand, if I use an electron beam with a hundred of KeV, in this case I can see the K alpha without problems.
Kind Regards
--
D. Javier Lozano Díaz
Técnico de apoyo en Radioprotección
Centro de láseres Pulsados Ultracortos (CLPU)
Calle Adaja nº8 C.P. 37185 Villamayor, Salamanca.
Edificio M5, Parque Científico USAL.
Tel: 923 338 121 Ext: 26
E-mail: jlozano_at_clpu.es<mailto:jlozano_at_clpu.es>
www.clpu.es<http://www.clpu.es>
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Received on Wed Jun 28 2017 - 11:10:00 CEST