Zobrazeno 1 - 10
of 853
pro vyhledávání: '"Plunien, G"'
Autor:
Anisimova, I. S., Malyshev, A. V., Glazov, D. A., Kaygorodov, M. Y., Kozhedub, Y. S., Plunien, G., Shabaev, V. M.
Publikováno v:
Phys. Rev. A 106, 062823 (2022)
A model-operator approach to fully relativistic calculations of the nuclear recoil effect on energy levels in many-electron atomic systems is worked out. The one-electron part of the model operator for treating the normal mass shift beyond the Breit
Externí odkaz:
http://arxiv.org/abs/2301.04132
According to quantum electrodynamics (QED), a strong external field can make the vacuum state decay producing electron-positron pairs. Here we investigate emission of soft photons which accompanies a nonperturbative process of pair production. Our an
Externí odkaz:
http://arxiv.org/abs/2202.06886
Autor:
Shabaev, V. M., Glazov, D. A., Ryzhkov, A. M., Brandau, C., Plunien, G., Quint, W., Volchkova, A. M., Zinenko, D. V.
Publikováno v:
Phys. Rev. Lett. 128, 043001 (2022)
A method is proposed to determine the $M1$ nuclear transition amplitude and hence the lifetime of the "nuclear clock transition" between the low-lying ($\sim 8$ eV) first isomeric state and the ground state of $^{229}$Th from a measurement of the gro
Externí odkaz:
http://arxiv.org/abs/2109.01642
The widely-used locally constant field approximation (LCFA) can be utilized in order to derive a simple closed-form expression for the total number of particles produced in the presence of a strong electromagnetic field of a general spatio-temporal c
Externí odkaz:
http://arxiv.org/abs/2012.10751
Autor:
Volchkova, A. M., Agababaev, V. A., Glazov, D. A., Volotka, A. V., Fritzsche, S., Shabaev, V. M., Plunien, G.
Dirac equation for an electron bound by a nucleus in the presence of external axially symmetric field can be solved numerically by using the dual-kinetic-balance conditions imposed on the finite basis set (A-DKB method [Rozenbaum et al, Phys. Rev. A
Externí odkaz:
http://arxiv.org/abs/2009.00109
Autor:
Popov, R. V., Shabaev, V. M., Telnov, D. A., Tupitsyn, I. I., Maltsev, I. A., Kozhedub, Y. S., Bondarev, A. I., Kozin, N. V., Ma, X., Plunien, G., Stöhlker, T., Tumakov, D. A., Zaytsev, V. A.
Publikováno v:
Phys. Rev. D 102, 076005 (2020)
In slow collisions of two bare nuclei with the total charge number larger than the critical value, $Z_{\rm cr} \approx 173$, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. Detection of the spontaneous
Externí odkaz:
http://arxiv.org/abs/2008.05005
Wavefunction-splitting or mask method, widely used in the non-relativistic calculations of the photoelectron angular distributions, is extended to the relativistic domain within the dipole approximation. Since the closed-form expressions for the rela
Externí odkaz:
http://arxiv.org/abs/2005.13613
Autor:
Kozhedub, Y. S., Bondarev, A. I., Cai, X., Ma, X., Plunien, G., Shabaev, V. M., Shao, C., Tupitsyn, I. I., Yang, B., Yu, D.
(Quasi)resonance electron-capture processes in non-symmetrical $(Z_{\rm P} \simeq 2Z_{\rm T})$ heavy ion-atom collisions are studied employing a semiclassical atomic Dirac-Fock-Sturm orbital coupled-channel approach within an independent-particle mod
Externí odkaz:
http://arxiv.org/abs/2003.10937
Autor:
Malyshev, A. V., Anisimova, I. S., Glazov, D. A., Kaygorodov, M. Y., Mironova, D. V., Plunien, G., Shabaev, V. M.
Publikováno v:
Phys. Rev. A 101, 052506 (2020)
The electron-electron interaction correction of first order in $1/Z$ to the one-electron part of the nuclear recoil effect on binding energies in atoms and ions is considered within the framework of the rigorous QED approach. The calculations to all
Externí odkaz:
http://arxiv.org/abs/2003.10858
Publikováno v:
Phys. Rev. A 100, 023407 (2019)
We calculate two-dimensional photoelectron momentum distributions and energy spectra after multiphoton ionization of Li atoms subject to intense laser fields in one-photon Rabi-flopping regime. The time-dependent Schr\"{o}dinger equation is solved wi
Externí odkaz:
http://arxiv.org/abs/1909.09812