Neutron-induced transmutation reactions in Np-237, Pu-238, and Pu-239 at the massive natural uranium spallation target

0444576 - ÚJF 2016 RIV NL eng J - Journal Article
Závorka, L. - Adam, Jindřich - Baldin, A. A. - Čaloun, Pavel - Chilap, V. V. - Furman, W. - Kadykov, M. G. - Khushvaktov, J. - Pronskikh, V. S. - Solnyshkin, A. A. - Sotnikov, V. - Stegailov, V. I. - Suchopár, Martin - Tsoupko-Sitnikov, V. M. - Tyutyunnikov, S. I. - Voronko, V. - Vrzalová, Jitka
Neutron-induced transmutation reactions in Np-237, Pu-238, and Pu-239 at the massive natural uranium spallation target.
Nuclear Instruments & Methods in Physics Research Section B. Roč. 349, APR (2015), s. 31-38. ISSN 0168-583X. E-ISSN 1872-9584
R&D Projects: GA MŠMT LG14004
Institutional support: RVO:61389005
Keywords : ADS * spent nuclear fuel * transmutation reaction * spallation neutrons
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.389, year: 2015

Transmutation reactions in the Np-237, Pu-238, and Pu-239 samples were investigated in the neutron field generated inside a massive (m = 512 kg) natural uranium spallation target. The uranium target assembly QUINTA was irradiated with the deuteron beams of kinetic energy 2, 4, and 8 GeV provided by the Nuclotron accelerator at the Joint Institute for Nuclear Research (JINR) in Dubna. The neutron-induced transmutation of the actinide samples was measured off-line by implementing methods of gamma-ray spectrometry with HPGe detectors. Results of measurement are expressed in the form of both the individual reaction rates and average fission transmutation rates. For the purpose of validation of radiation transport programs, the experimental results were compared with simulations of neutron production and distribution performed by the MCNPX 2.7 and MARS15 codes employing the INCL4-ABLA physics models and LAQGSM event generator, respectively. In general, a good agreement between the experimental and calculated reaction rates was found in the whole interval of provided beam energies.
Permanent Link: http://hdl.handle.net/11104/0247093