Персона: Пятков, Юрий Васильевич
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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 «Исследование многотельных распадов тяжелых ядер с низкой энергией возбуждения»
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Пятков
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Юрий Васильевич
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- ПубликацияТолько метаданныеFission Fragments Binary Brake-Up at Crossing of the Carbon Foil(2020) Strekalovsky, A. O.; Kamanin, D. V.; Goryainova, Z. I.; Zhuchko, V. E.; Pyatkov, Y. V.; Пятков, Юрий Васильевич© 2020, Allerton Press, Inc.Abstract: A time-of-flight spectrometer was used to compare the masses of nuclear fission fragments before and after their passage through the carbon foil, event by event. For all the registered fragments, there was a significant loss of mass of the fragment, and the registered fragment-residue turned out to be a magic nucleus. For spontaneous fission of 252Cf nuclei, the effect was observed for both light and heavy mass peaks. This gives grounds to assume that the fragment of the conventional binary fission is born in the shape isomer state, which looks like a di-nuclear system consisting of a magical core and a light cluster.
- ПубликацияТолько метаданныеManifestations of pear-shaped clusters in collinear cluster tri-partition of 252Cf(2020) Kamanin, D. V.; Alexandrov, A. A.; Alexandrova, I. A.; Goryainova, Z. I.; Pyatkov, Y. V.; Пятков, Юрий Васильевич© 2020. All Rights Reserved.Specific mode of the collinear cluster tri-partition of the 252Cf nucleus is discussed. The structure manifests itself as a rhombic-spiral structure in the fission fragments correlation mass distribution.
- ПубликацияТолько метаданныеSimulation and Analysis of the Properties of Linear Structures in the Mass Distribution of Nuclear Reaction Products by Machine Learning Methods(2021) Ososkov, G. A.; Rudenko, M. O.; Pyatkov, Y. V.; Пятков, Юрий Васильевич© 2021, Pleiades Publishing, Ltd.Abstract: This paper is devoted to the analysis of manifestations of clustering in rare multibody decays of heavy nuclei. A computer model of the fine structure was developed jointly with the physicists of FLNR JINR; it was found based on experiments with the transuranium element Californium. To test the hypothesis that the structure really exists and is not a noise artifact, it was proposed to use a deep convolution network as a binary classifier trained on a large sample of model and noise images. Preliminary results of using the developed neuroclassifier show the prospects for this approach.
- ПубликацияТолько метаданныеNew Modes of Collinear Cluster Tri-Partition(2022) Pyatkov, Y. V.; Kamanin, D. V.; Solodov, A. N.; Goryainova, Z. I.; Korsten, R.; Kuznetsova, E. A.; Пятков, Юрий Васильевич
- ПубликацияТолько метаданныеObservation of the Shape Isomer States in Fission Fragments from (γ, f) Reactions(2023) Kamanin, D. V.; Pyatkov, Y. V.; Solodov, A. N.; Strekalovsky, A. O.; Пятков, Юрий Васильевич
- ПубликацияТолько метаданныеObservation of a New Effect in the Ternary Fission of 252Cf(sf) with the Emission of an Alpha Particle(2023) Pyatkov, Y. V.; Kamanin, D. V.; Strekalovsky, A. O.; Goryainova, Z. I.; Пятков, Юрий Васильевич
- ПубликацияТолько метаданныеObservation of the shape isomer states in fission fragments from fission of low excited actinides(2023) Kamanin, D. V.; Pyatkov, Yu. V.; Solodov, A. N.; Strekalovsky, O. V.; Пятков, Юрий ВасильевичAbstract The results of two methodically different experiments dedicated to the effect of a break-up of fission fragment while it passing through a solid-state foil are discussed. The hypothesis is confirmed that some part of fission fragments which were born in the shape isomer states undergo a break-up due to inelastic scattering in the foil.
- ПубликацияТолько метаданныеCluster aspects of collinear cluster tri-partition (CCT)(2023) Pyatkov, Yu. V.; Kamanin, D. V.; Carjan, N.; Okada, K.; Пятков, Юрий ВасильевичAbstract New results demonstrating the so-called Ni-bump being the most populated mode of the collinear cluster tripartition (CCT) of 252 Cf(sf) are presented. The physical scenario of this effect is discussed. It is tested by calculations of potential energy surfaces for the fission of the intermediate fragments formed after first rupture of the mother nucleus. Fission barriers are extracted and mass asymmetries at saddles are compared with the masses of the fission fragments that take part in the Ni-bump.