Measurement of the high energy neutron flux on the surface of the natural uranium target assembly QUINTA irradiated by deuterons of 4 and 8 GeV energy

0486356 - ÚJF 2018 RIV NL eng C - Konferenční příspěvek (zahraniční konf.)
Adam, Jindřich - Baldin, A. A. - Chilap, V. V. - Furman, W. - Katovsky, K. - Khushvaktov, J. - Kumar, V. - Pronskikh, V. S. - Mar'in, I. - Solnyshkin, A. A. - Suchopár, Martin - Tsupko-Sitnikov, V. M. - Tyutyunnikov, S. I. - Vrzalová, J. - Wagner, Vladimír - Závorka, L.
Measurement of the high energy neutron flux on the surface of the natural uranium target assembly QUINTA irradiated by deuterons of 4 and 8 GeV energy.
Physics Procedia. Vol. 80. Amsterdam: Elsevier, 2015, s. 94-97. ISSN 1875-3892.
[26th International Conference on Nuclear Tracks in Solids. Kobe (JP), 15.09.2014-19.09.2014]
Institucionální podpora: RVO:61389005
Klíčová slova: accelerator driven system * uranium target-blanket * spallation neutrons * neutron spectrum * gamma spectrometry * MCNPX
Obor OECD: Nuclear physics

Experiments with the natural uranium target assembly 'QUINTA' exposed to 4 and 8 GeV deuteron beams of the Nuclotron accelerator at the Joint Institute for Nuclear Research (Dubna) are analyzed. The reaction rates of Al-27(n,yl)Na-24, Al-27(n,y2)Na-22 and Al-27(n,y3)Be-7 reactions with effective threshold energies of 5, 27, and 119 MeV were measured at both 4 GeV and 8 GeV deuteron beam energies. The average neutron fluxes between the effective threshold energies and the effective ends of the neutron spectra (which are 800 or 1000 MeV for 4 or 8 GeV deuterons) were determined. The evidence for the intensity shift of the neutron spectra to higher neutron energies with the increase of the deuteron energy from 4 GeV to 8 GeV was found from the ratios of the average neutron fluxes. The reaction rates and the average neutron fluxes were calculated with the MCNPX 2.7 code.
Trvalý link: http://hdl.handle.net/11104/0281185