Zobrazeno 1 - 10
of 2 311
pro vyhledávání: '"A, Shabaev"'
Autor:
Dulaev, N. K., Telnov, D. A., Shabaev, V. M., Kozhedub, Y. S., Ma, X., Maltsev, I. A., Popov, R. V., Tupitsyn, I. I.
Energy--angle differential and total probabilities of positron creation in slow supercritical collisions of two identical heavy nuclei are calculated beyond the monopole approximation. The time-dependent Dirac equation (TDDE) for positrons is solved
Externí odkaz:
http://arxiv.org/abs/2411.01520
The \textit{ab initio} approach is used to evaluate the excitation energies of the $2s2p \, ^{2S+1}P_J$ states from the ground state as well as the $2s2p \, ^3P_1 \rightarrow 2s2p \, ^3P_0$ and $2s2p \, ^3P_2 \rightarrow 2s2p \, ^3P_1$ transition ene
Externí odkaz:
http://arxiv.org/abs/2411.01241
We investigate the nonperturbative process of vacuum pair production in a combination of two counterpropagating linearly polarized laser pulses of a finite spatial extent. By means of the locally-constant field approximation (LCFA), we calculate the
Externí odkaz:
http://arxiv.org/abs/2408.04084
Methods of bound-state QED that treat the self-energy contributions to the Lamb shift within the partial-wave expansion usually face the problem of slow convergence of the latter. Inspired by an approach formulated in [J. Sapirstein and K. T. Cheng,
Externí odkaz:
http://arxiv.org/abs/2404.04742
Autor:
Tupitsyn, I. I., Savelyev, I. M., Kozhedub, Y. S., Telnov, D. A., Dulaev, N. K., Malyshev, A. V., Prokhorchuk, E. A., Shabaev, V. M.
The problem of orbital collapse of the $5g$ and $6f$ electrons in atoms of superheavy elements (SHE) is considered. Previously, the presence of the orbital collapse was established for the $4f$ and $5f$ elements of the periodic table. Because of the
Externí odkaz:
http://arxiv.org/abs/2402.02609
Autor:
Telnov, D. A., Dulaev, N. K., Kozhedub, Y. S., Maltsev, I. A., Popov, R. V., Tupitsyn, I. I., Shabaev, V. M.
Publikováno v:
Physics of Atomic Nuclei 87 (319), 2024
We present a theoretical and computational study of positron supercritical resonances in systems consisting of two highly-charged bare nuclei. The resonance positions and widths depending on the internuclear separation are calculated with the help of
Externí odkaz:
http://arxiv.org/abs/2401.14735
Autor:
Usov, D. P., Kozhedub, Y. S., Meshkov, V. V., Stolyarov, A. V., Dulaev, N. K., Mosyagin, N. S., Ryzhkov, A. M., Savelyev, I. M., Shabaev, V. M., Tupitsyn, I. I.
The ground X1{\Sigma}+ state potential energy curve (PEC) and dipole moment curve (DMC) of CO molecule have been revisited within the framework of the relativistic coupled-cluster approach, which incorporates non-perturbative single, double, and trip
Externí odkaz:
http://arxiv.org/abs/2312.14168
Autor:
Dulaev, N. K., Telnov, D. A., Shabaev, V. M., Kozhedub, Y. S., Maltsev, I. A., Popov, R. V., Tupitsyn, I. I.
Publikováno v:
Phys. Rev. D 109, 036008 (2024)
Positron creation probabilities as well as energy and angular distributions of outgoing positrons in slow collisions of two identical heavy nuclei are obtained within the two-center approach beyond the monopole approximation. The time-dependent Dirac
Externí odkaz:
http://arxiv.org/abs/2312.05069
Autor:
V. S. Shabaev, V. A. Onoshko, A. S. Galushko, V. A. Mazurok, I. V. Orazmagomedova, L. G. Vasilyeva, D. A. Aleksandrova
Publikováno v:
Неотложная медицинская помощь, Vol 13, Iss 3, Pp 514-521 (2024)
RELEVANCE. We present the results of preclinical testing of an upgraded portable AR1 gas flow analyzer produced by JSC Krasnogvardeets (Saint Petersburg) in order to create import-substituting technologies and develop practical and scientific spher
Externí odkaz:
https://doaj.org/article/0e0c8ded5e5c445ab1eec1012eeec2df
Autor:
Kozlov, M. G., Oleynichenko, A. V., Budker, D., Glazov, D. A., Lomachuk, Y. V., Shabaev, V. M., Titov, A. V., Tupitsyn, I. I., Volotka, A. V.
The $^{229}$Th nucleus has a long-lived isomeric state $A^*$ at 8.338(24) eV [Kraemer et al, Nature, \textbf{617}, 706 (2023)]. This state is connected to the ground state by an M1 transition. For a hydrogenlike Th ion in the $1s$ state the hyperfine
Externí odkaz:
http://arxiv.org/abs/2308.05173