Персона: Гуров, Юрий Борисович
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Руководитель научной группы "Экзотические ядерные состояния"
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Гуров
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Юрий Борисович
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6 results
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- ПубликацияТолько метаданныеThe Neutron Structure of the Ground State of 7He(2019) Demyanova, A. S.; Goncharov, S. A.; Ogloblin, A. A.; Sandukovsky, V. G.; Chernyshev, B. A.; Gurov, Y. B.; Lapushkin, S. V.; Чернышев, Борис Андреевич; Гуров, Юрий Борисович© 2019, Pleiades Publishing, Inc.A study of the neutron structure of the ground state of 7He has been performed by means of registration and analysis of the decay channels of the residual nuclei following absorption of stopped pions. In particular, the reactions 9Be(π−, d)X and 11B(π−, dd)X have been investigated where X denotes any system with five neutrons and two protons — the constituencies of a 7He nucleus. The results point out to the existence of a halo-like configuration of the ground state of 7He with all three neutrons outside of the alpha particle core. The structure of this complicated halo-like state is determined by the correlations of neutrons in the p3/2 and p1/2 shells. The result would be in agreement with the previous works pointing out to a considerable mixing of configurations containing neutrons in the p3/2 and p1/2 states.
- ПубликацияТолько метаданные8He Spectroscopy with Stopped-Pion Absorption by 12C and 14C(2019) Gurov, Y. B.; Lapushkin, S. V.; Leonova, T. I.; Sandukovsky, V. G.; Chernyshev, B. A.; Гуров, Юрий Борисович; Леонова, Татьяна Игоревна; Чернышев, Борис Андреевич© 2019, Allerton Press, Inc.Abstract: The structure of the levels of heavy helium isotope 8He is investigated using the reactions of stopped-pion absorption by carbon isotopes 12С(π−, p3He)X, 14С(π−, d4He)X, and 14С(π−, t3He)X. Measurements are made with the two-arm multilayer semiconductor spectrometer at the LANL accelerator. Excited states of the 8He nucleus with energies of excitation of up to ~ 20 MeV are sought using the measured missing-mass spectra for these reactions. An excited state with Ex ≈ 6.4 MeV and Г ≤ 1 MeV is observed for the first time. Its structure is probably due to two valence nucleons on the (1p1/2)2 shell.
- ПубликацияТолько метаданныеCharged Particle Production in Stopped Pion Absorption by Nuclei(2019) Gurov, Y. B.; Karpukhin, V. S.; Lapushkin, S. V.; Leonova, T. I.; Pritula, R. V.; Chernyshev, B. A.; Sandukovsky, V. G.; Гуров, Юрий Борисович; Леонова, Татьяна Игоревна; Чернышев, Борис Андреевич© 2019, Pleiades Publishing, Ltd.The spectra of 3,4He charged particles produced in stopped pion absorption by nuclei were measured for 17 nuclei in the mass-number range of 6 ≤ A ≤ 209 by means of a semiconductor spectrometer. These data were analyzed on the basis of a phenomenological model where the absorption reaction in question is treated as a three-stage process: primary absorption by intranuclear clusters, preequilibrium stage, and evaporation stage. It is shown that a dominant contribution to the production of helium isotopes with energies not less than 20 MeV comes from the preequilibrium stage. The contribution of the knockout and pickup mechanisms to 3,4He production is estimated.
- ПубликацияТолько метаданныеThe Amplitude Defect of SiC Detectors during the Recording of Accelerated Xe Ions(2019) Hrubcin, L.; Zat'ko, B.; Bohacek, P.; Rozov, S. V.; Gurov, Y. B.; Гуров, Юрий Борисович© 2019, Pleiades Publishing, Ltd.The properties of detectors based on epitaxial layers of silicon carbide (SiC) are presented. It is shown that the developed detectors have good spectrometric characteristics when detecting a particles with energies of up to 8 MeV. The pulse height defect was measured in SiC detectors under irradiation by accelerated xenon ions with different energies. It is shown that this parameter in the spectroscopic analysis of Xe ions is ∼45% of the true energy of the particles in question.
- ПубликацияТолько метаданныеStudy of characteristics of CdZnTe detector(2019) Gurov, Y. B.; Egorov, N. Y.; Ponomarev, D. V.; Rozov, S. V.; Zhivun, V. M.; Гуров, Юрий Борисович; Егоров, Никита Юрьевич; Живун, Валерий МакаровичThe results of investigation of detector made of cadmium zinc telluride (CdZnTe or CZT) crystal with a working volume of 1500 mm(3) are presented. The detector is shown to have good spectrometric characteristics in registering gamma radiation from Am-241, Co-57, Cs-137 and Co-60 sources and can be effectively used for low-background measurements.
- ПубликацияТолько метаданныеThe study of the 12C states from the reaction 11B(3He, d)12C(2019) Starastsin, V. I.; Demyanova, A. S.; Danilov, A. N.; Ogloblin, A. A.; Gurov, Y.; Гуров, Юрий Борисович© Published under licence by IOP Publishing Ltd.The experiment was done to study 11B(3He, d)12C reaction with energy E(3He)=25 MeV. The aim of the experiment is to determine the properties of 12C states at high excitation energies and in particular to verify which of the conflicting spin-parity assignments of the 13.35 MeV state (2- or 4-) should be assigned. Behavior of the experimental angular distribution and also the DWBA calculation correspond to spin parity 4- for 13.35 MeV state.