U-238 fission and Pu-239 production in subcritical assembly
Institute of Physics, Jagiellonian University, ul. prof. Stanislawa Lojasiewicza 11 30-348 Krakow, Poland
2 National Center for Nuclear Research, Otwock-Swierk, Poland
3 Joint Institute for Nuclear Research, 141980 Dubna, Russia
Published online: 18 April 2018
The project touches upon an issue of U-238 fission reactions and Pu-239 production reactions in subcritical assembly. The experiment took place in November 2014 at the Dzhelepov Laboratory of Nuclear Problems (JINR, Dubna) using PHASOTRON.Data of this experiment were analyzed in Laboratory of Information Technologies (LIT). Four MCNPX models were considered for simulation: Bertini/Dresnen, Bertini/Abla, INCL4/Drensnen, INCL4/Abla. The main goal of the project was to compare the experimental data and simulation results. We obtain a good agreement of experimental data and computation results especially for detectors placed besides the assembly axis. In addition, the U-238 fission reactions are more probable to be observed in the region of a higher particle energy spectrum, located closer to the assembly axis and the particle beam as well and vice versa Pu-239 production reactions were dominant in the peripheral region of geometry.
© The Authors, published by EDP Sciences, 2018
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