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Your search keyword '"Knyazev, A. G."' showing total 563 results
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563 results on '"Knyazev, A. G."'

1. Design and Performance of the ACCULINNA-2 Fragment-Separator

Author

Krupko, S. A., Belogurov, S. G., Bezbakh, A. A., Fomichev, A. S., Grigorenko, L. V., Golovkov, M. S., Gorshkov, A. V., Gorshkov, V. A., Kaminski, G., Knyazev, A. G., Nikolskii, E. Yu., Parfenova, Yu. L., Rymzhanova, S. A., Slepnev, R. S., Stepantsov, S. V., Ter-Akopian, G. M., Chudoba, V., and Sharov, P. G.

Published
2024
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3. Detector array for the $^7$H nucleus multi-neutron decay study

Author

Bezbakh, A. A., Belogurov, S. G., Chudoba, V., Fomichev, A. S., Gorshkov, A. V., Grigorenko, L. V., Kaminski, G., Khirk, M. S., Knyazev, A. G., Krupko, S. A., Mauyey, B., Muzalevskii, I A., Nikolskii, E. Yu., Quynh, A. M., Sharov, P. G., Slepnev, R. S, Stepantsov, S. V., Ter-Akopian, G. M., and Wolski, R.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

Setup fitting the requirements for the detailed study of the five-body decay of the 7H nucleus obtained as a result of the proton transfer from the 8He projectiles to the deuterium target nuclei is being built at the radioactive beam line of ACCULINNA-2 separator in the G.N. Flerov Laboratory of Nuclear Reactions. Described here is the assembly of 100 BC-404 plastic scintillators, intended for neutron detection, the annular Si detector telescope for the 3He recoils, and the detector array providing the $\Delta E$-$E$-TOF registration of 3H nuclei emitted at the 7H decay. Results obtained by the Monte Carlo simulations made for the energy values and flight passes of all these particles are given together with the luminosity expected for the discussed experiments.

Published
2022

7. Detector Array for the 7H Nucleus Multi-Neutron Decay Study

Author

Bezbakh, A. A., Belogurov, S. G., Chudoba, V., Fomichev, A. S., Gorshkov, A. V., Grigorenko, L. V., Kaminski, G., Khirk, M. S., Knyazev, A. G., Krupko, S. A., Mauyey, B., Muzalevskii, I. A., Nikolskii, E. Yu., Quynh, A. M., Sharov, P. G., Slepnev, R. S., Stepantsov, S. V., Ter-Akopian, G. M., and Wolski, R.

Published
2023
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15. Dust Complex for Studying the Dust Particle Dynamics in the Near-Surface Atmosphere of Mars

Author

Zakharov, A. V., Dolnikov, G. G., Kuznetsov, I. A., Lyash, A. N., Esposito, F., Molfese, C., Rodríguez, I. Arruego, Seran, E., Godefroy, M., Dubov, A. E., Dokuchaev, I. V., Knyazev, M. G., Bondarenko, A. V., Gotlib, V. M., Karedin, V. N., Shashkova, I. A., Abdelaal, M. E., Kartasheva, A. A., Shekhovtsova, A. V., Bednyakov, S. A., Barke, V. V., Yakovlev, A. V., Grushin, V. A., Bychkova, A. S., Popel, S. I., Korablev, O. I., Rodionov, D. S., Duxbury, N. S., Petrov, O. F., Lisin, E. A., Vasiliev, M. M., Poroikov, A. Yu., Borisov, N. D., Cortecchia, F., Saggin, B., Cozzolino, F., Brienza, D., Scaccabarozzi, D., Mongelluzzo, G., Franzese, G., Porto, C., Rico, A. Martín Ortega, Santiuste, N. Andrés, de Mingo, J. R., Popa, C. I., Silvestro, S., and Brucato, J. R.

Published
2022
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18. Search for $2p$ decay of the first excited state of $^{17}$Ne

Author

Sharov, P. G., Bezbakh, A. A., Chudoba, V., Fomichev, A. S., Golovkov, M. S., Gorshkov, A. V., Grigorenko, L. V., Kaminski, G., Knyazev, A. G., Krupko, S. A., Mentel, M., Nikolskii, E. Yu., Parfenova, Yu. L., Pluchinski, P., Rymzhanova, S. A., Sidorchuk, S. I., Slepnev, R. S., Stepantsov, S. V., Ter-Akopian, G. M., Wolski, R., and Zhukov, M. V.

Subjects
Nuclear Experiment
Abstract

Two-proton decay of the $^{17}$Ne low-lying states populated in the $^1$H($^{18}$Ne,$d$)$^{17}$Ne transfer reaction was studied. The two-proton width $\Gamma_{2p}$ of the $^{17}$Ne first excited $3/2^-$ state at $E^*=1.288$ MeV is of importance for the two-proton radioactivity theory and nuclear-astrophysics applications. A dedicated search for the two-proton emission of this state was performed leading to the new upper limit obtained for the width ratio $\Gamma_{2p}/\Gamma_{\gamma} < 1.6(3) \times 10^{-4}$. A novel, "combined mass" method is suggested and tested capable to improve the resolution of the experiment which is a prime significance for the study of nuclear states with extremely small particle-to-gamma width ratios $\Gamma_{\mathrm{part}}/\Gamma_{\gamma}$. The condition $\Gamma_{\mathrm{part}} \ll \Gamma_{\gamma}$ is quite common for the states of astrophysical interest which makes the proposed approach promising in this field.

Published
2016
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19. Problems to be clarified by means of redioactive ion beams provided by the ACCULINNA-2 separator

Author

Ter-Akopian, G. M., Bezbakh, A. A., Chudoba, V., Fomichev, A. S., Golovkov, M. S., Gorshkov, A. V., Grigorenko, L. V., Kaminski, G., Knyazev, A. G., Krupko, S. A., Mentel, M., Nikolskii, E. Yu., Parfenova, Yu. L., Pluczinski, P., Rymzhanova, S. A., Sidorchuk, S. I., Slepnev, R. S., Stepantsov, S. V., Wolski, R., and Zalewski, B.

Subjects
Nuclear Experiment
Abstract

Fragment separator ACCULINNA-2 has been built in the Flerov Laboratory of Nuclear reactions (JINR, Dubna). It is timely now to choose meaningful and challenging objectives for experiments dedicated to the study of light drip-line nuclei. Considerable interest makes the search for the minor $2p$-decay branch of the first excited state of $^{17}$Ne. The knowledge on the $\Gamma_{2p}/\Gamma_{\gamma}$ width ratio for this excited state is of considerable interest because the reverse process of simultaneous two-proton radiative capture could be a bypass for the $^{15}$O "waiting point" occurring in the rp-process of nucleosynthesis. Accumulation of high-statistics data for the $^{10}$He excitation spectrum populated in the $^2$H($^8$He,$p$)$^9$He and $^3$H($^8$He,$p$)$^{10}$He reactions, as well as the study of cross-check reactions made with the $^{11}$Li and $^{14}$Be beams, will make an effective way to clarify the succession of $^{10}$He excited states. A hot topic beyond the neutron drip line makes the observation of results capable to elucidate the low-energy resonance states anticipated for the $4n$ decay of $^{7}$H. The RIB beams provided by ACCULINNA-2 will allow one to perform experiments where luminosity coming to a level of more than $2 \times 10^{26}$ cm$^{-2}$ s$^{-1}$ will be achievable in experiments aimed study of the $^2$H($^8$He,$^3$He)$^7$H and $^2$H($^{11}$Li,$^6$Li)$^7$H reactions., Comment: 9 pages, 3 figures, submitted to Proceedings of Int. Symp. on Exotic Nuclei, EXON-2016, 4-10 September 2016, Kazan, Russia

Published
2016

47. Representational similarity analysis of self‐ versus other‐processing: Effect of trait aggressiveness.

Author

Knyazev, Gennady G., Savostyanov, Alexander N., Bocharov, Andrey V., and Saprigyn, Alexander E.

Subjects
*MENTAL representation, *COLLECTIVE representation, *COMMUNITY centers, *SOCIAL context
Abstract

In this study, using the self/other adjective judgment task, we aimed to explore how people perceive themselves in comparison to various other people, including friends, strangers, and those they dislike. Next, using representational similarity analysis, we sought to elucidate how these perceptual similarities and differences are represented in brain activity and how aggressiveness is related to these representations. Behavioral ratings show that, on average, people tend to consider themselves more like their friends than neutral strangers, and least like people they dislike. This pattern of similarity is positively correlated with neural representation in social and cognitive circuits of the brain and negatively correlated with neural representation in emotional centers that may represent emotional arousal associated with various social objects. Aggressiveness seems to predispose a person to a pattern of behavior that is the opposite of the average pattern, that is, a tendency to think of oneself as less like one's friends and more like one's enemies. This corresponds to an increase in the similarity of the behavioral representation with the representation in the emotional centers and a decrease in its similarity with the representation in the social and cognitive centers. This can be seen as evidence that in individuals prone to aggression, behavior in the social environment may depend to a greater extent on the representation of social objects in the emotional rather than social and cognitive brain circuits. [ABSTRACT FROM AUTHOR]

Published
2024
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