Dear Guanying,
There are 4 low-energy neutron cross section options for Ar-40 in FLUKA (FLUKA Manual Chapter 10.4.1.2):
40Ar Argon 40 296K TENDL-13
40Ar Argon 40 87K JEFF-3.1
40Ar Argon 40 SelfShielded 296K TENDL-13
40Ar Argon 40 SelfShielded 87K JEFF-3.1
Meanwhile, the ENDF online libraries offer many different sets of neutron cross section data that are based on JEFF-3.1-3.2-3.3, TENDL-2014-2015-2017, JENDL, etc. Hence, in order to interpret the results of your comparison, one must first know exactly which data sets are being compared.
Best regards,
George
________________________________
From: owner-fluka-discuss_at_mi.infn.it <owner-fluka-discuss_at_mi.infn.it> on behalf of Zhu, Guanying <zhu.1475_at_buckeyemail.osu.edu>
Sent: Wednesday, February 27, 2019 12:23:15 AM
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Low-energy neutron cross section of 40Ar
Dear FLUKA experts,
I’m trying to compare FLUKA low-energy neutron cross section of 40Ar with ENDF libraries. From the attached plot, it seems that discrepancies exist for both elastic-scattering and radiative-capture channels.
I simply extract the cross section with LOW-NEUT card, and assume: sigma_ES = (1 - PNEL) * SIGT; sigma_capture = PNGAM * SIGT. Also attached are the input and output files.
Does anyone know if I misinterpret the output or if the discrepancies are real? Thank you very much!
Best,
Guanying
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Received on Fri Mar 15 2019 - 10:41:39 CET