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Your search keyword '"Andreeva, N. P."' showing total 692 results
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692 results on '"Andreeva, N. P."'

19. Level of influenza virus strain antibodies in healthy vaccinated people at the end of the COVID-19 pandemic

Author

Iushkova, S. V., primary, Kostinov, M. P., additional, Gladkova, L. S., additional, Kameleva, A. A., additional, Kachnova, A. S., additional, Kostinova, A. M., additional, Solovyeva, I. L., additional, Andreeva, N. P., additional, Dagil, Yu. A., additional, Nastaeva, N. Yu., additional, Kryukova, N. O., additional, and Loktionova, M. N., additional

Published
2024
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39. Coherent Dissociation $^{16}$O~$\rightarrow$~4$\alpha$ in Photoemulsion at an Incident Momentum of 4.5 GeV/$c$ per Nucleon

Author

Andreeva, N. P., Anzon, Z. V., Bubnov, V. I., Gaitinov, A. Sh., Eligbaeva, G. Zh., Eremenko, L. E., Kalyachkina, G. S., Kanygina, E. K., Seitimbetov, A. M., Chasnikov, I. Ya., Shakhova, Ts. I., Haiduk, M., Krasnov, S. A., Maksimkina, T. N., Tolstov, K. D., Chernov, G. M., Salmanova, N. A., Salomov, D. A., Khushvaktova, A., Avetyan, F. A., Marutyan, N. A., Sarkisova, L. T., Sarkisyan, V. F., Adamovich, M. I., Bashmakov, Yu. A., Larionova, V. G., Orlova, G. I., Peresadko, N. G., Tretyakova, M. I., Kharlamov, S. P., Chemyavsky, M. M., Bogdanov, V. G., Plyushchev, V. A., Soloveva, Z. I., Belaga, V. V., Bondarenko, A. I., Rustamova, Sh. A., Chemov, A. G., Kostanashvili, N. N., and Vokál, S.

Subjects
Nuclear Experiment
Abstract

First searches for the coherent dissociation of relativistic oxygen nuclei into four a particles are reported. It is shown that reactions of this type are characterized by a significantly lower decay temperature than the conventional multifragmentation of residual projectile nuclei. The momentum spectra and correlations of a panicles are not reproduced by the simple statistical model of direct fragmentation. The possibility that the oxygen nucleus undergoing fragmentation acquires a nonzero angular momentum in the collision process is discussed., Comment: Translated from Yadernaya Fizika, Vol.59, No. 1, 1996, pp. 110-116

Published
2011
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40. Topology of 'white' stars in relativistic fragmentation of light nuclei

Author

Andreeva, N. P., Bradnova, V., Vokal, S., Vokalova, A., Gaitinov, A. Sh., Gerasimov, S. G., Goncharova, L. A., Dronov, V. A., Zarubin, P. I., Zarubina, I. G., Orlova, G. I., Kovalenko, A. D., Kravchakova, A., Larionova, V. G., Lepekhin, F. G., Levitskaya, O. V., Malakhov, A. I., Moiseenko, A. A., Peresadko, N. G., Polukhina, N. G., Rukoyatkin, P. A., Rusakova, V. V., Salmanova, N. A., Sarkisyan, V. R., Simonov, B. B., Stan, E., Stanoeva, R., Chernyavsky, M. M., Haiduc, M., Kharlamov, S. P., Tsakov, I., and Shchedrina, T. V.

Subjects
Nuclear Experiment
Abstract

In the present paper, experimental observations of the multifragmentation processes of light relativistic nuclei carried out by means of emulsions are reviewed. Events of the type of "white" stars in which the dissociation of relativistic nuclei is not accompanied by the production of mesons and the target-nucleus fragments are considered. A distinctive feature of the charge topology in the dissociation of the Ne, Mg, Si, and S nuclei is an almost total suppression of the binary splitting of nuclei to fragments with charges higher than 2. The growth of the nuclear fragmentation degree is revealed in an increase in the multiplicity of singly and doubly charged fragments with decreasing charge of the non-excited part of the fragmenting nucleus. The processes of dissociation of stable Li, Be, B, C, N, and O isotopes to charged fragments were used to study special features of the formation of systems consisting of the lightest $\alpha$, d, and t nuclei. Clustering in form of the $^3$He nucleus can be detected in "white" stars via the dissociation of neutron-deficient Be, B, C, and N isotopes., Comment: 20 pages, 3 figures, 9 tables, conference: Conference on Physics of Fundamental Interactions, Moscow, Russia, 1-5 Mar 2004.(Author's translation)

Published
2006
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41. Clustering in light nuclei in fragmentation above 1 A GeV

Author

Andreeva, N. P., Artemenkov, D. A., Bradnova, V., Chernyavsky, M. M., Gaitinov, A. Sh., Kachalova, N. A., Kharlamov, S. P., Kovalenko, A. D., Haiduc, M., Gerasimov, S. G., Goncharova, L. A., Larionova, V. G., Malakhov, A. I., Moiseenko, A. A., Orlova, G. I., Peresadko, N. G., Polukhina, N. G., Rukoyatkin, P. A., Rusakova, V. V., Sarkisyan, V. R., Shchedrina, T. V., Stan, E., Stanoeva, R., Tsakov, I., Vokal, S., Vokalova, A., Zarubin, P. I., and Zarubina, I. G.

Subjects
Nuclear Experiment
Abstract

The relativistic invariant approach is applied to analyzing the 3.3 A GeV $^{22}$Ne fragmentation in a nuclear track emulsion. New results on few-body dissociations have been obtained from the emulsion exposures to 2.1 A GeV $^{14}$N and 1.2 A GeV $^{9}$Be nuclei. It can be asserted that the use of the invariant approach is an effective means of obtaining conclusions about the behavior of systems involving a few He nuclei at a relative energy close to 1 MeV per nucleon. The first observations of fragmentation of 1.2 A GeV $^{8}$B and $^{9}$C nuclei in emulsion are described. The presented results allow one to justify the development of few-body aspects of nuclear astrophysics., Comment: 7 pages, 8 figures, 3 tables, Nuclear Physics in Astrophysics-2, 16-20 May, 2005 (ATOMKI), Debrecen, Hungary

Published
2006
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