Dear all,
Hi, I am a graduate student at Hanyang University in Seoul, South Korea.
I am evaluating the activity of cyclotron and surrounding structures, when
18 MeV proton is irradiated on H218O target, and I am trying to compare this
results with those of MCNP.
In this simulation, I found something curious on activation of Na-23.
In MCNP result, there are Na-22 isotopes from (n,2n) reaction of Na-23,
which has pretty high radioactivity.
However, in FLUKA result, Na-22 isotopes are not produced at all.
I found some Q/A in fluka discuss website, that (n,2n) reaction does not
occur with neutrons of below 20 MeV, and in FLUKA the compensation of this
process will be done by modifying the weight of generated neutrons.
However, in my case, I have to evaluate the activities and the activities of
Na-22 isotope from (n,2n) reaction of Na-23 isotope is important.
In this case, does FLUKA compensate the activity of no production of Na-22,
too?
If not, how can I evaluate the activity correctly?
Your answer will be a great help in my research.
I am looking forward to hearing from you.
Best wishes,
Sung Hun Kim
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Sung Hun Kim, MS-PhD integrated course
Department of Nuclear Engineering, Hanyang University
222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Korea
Office: +82-2-2220-4057, Fax: +82-2-2220-4054
Cell: +82-10-7242-4249
E-mail: <mailto:ksh4249_at_hanyang.ac.kr> ksh4249_at_hanyang.ac.kr
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Received on Fri Jul 15 2016 - 11:24:53 CEST