Zobrazeno 1 - 10
of 405
pro vyhledávání: '"Safronova, U. I."'
Autor:
Zheng, T. A., Yang, Y. A., Safronova, M. S., Safronova, U. I., Xiong, Zhuan-Xian, Xia, T., Lu, Z. -T.
We calculate and measure the magic wavelengths for the $6s^2{}\,^1S_0-6s6p\,{}^3P_1$ intercombination transition of the neutral ytterbium atom. The calculation is performed with the \textit{ab initio} configuration interaction (CI) + all-order method
Externí odkaz:
http://arxiv.org/abs/2011.06759
Autor:
Porsev, S. G., Safronova, U. I., Safronova, M. S., Schmidt, P. O., Bondarev, A. I., Kozlov, M. G., Tupitsyn, I. I.
Publikováno v:
Phys. Rev. A 102, 012802 (2020)
Recent experimental progress in cooling, trapping, and quantum logic spectroscopy of highly-charged ions (HCIs) made HCIs accessible for high resolution spectroscopy and precision fundamental studies. Based on these achievements, we explore a possibi
Externí odkaz:
http://arxiv.org/abs/2004.05978
Publikováno v:
Phys. Rev. A 98, 052512 (2018)
Advances in laser spectroscopy of superheavy ($Z>100$) elements enabled determination of the nuclear moments of the heaviest nuclei, which requires high-precision atomic calculations of the relevant hyperfine structure (HFS) constants. Here, we calcu
Externí odkaz:
http://arxiv.org/abs/1810.07771
Publikováno v:
Phys. Rev. A 98, 022509 (2018)
The singly-ionized lutetium has a number of fortuitous properties well suited for a design of an optical clock and corresponding applications. In this work, we study Lu+ properties relevant to a development of the clock using the relativistic high-pr
Externí odkaz:
http://arxiv.org/abs/1806.02909
Publikováno v:
Phys. Rev. A 97, 012511 (2018)
We study the effects of higher-order electronic correlations in the systems with particle-hole excited states using a relativistic hybrid method that combines configuration interaction and linearized coupled-cluster approaches. We find the configurat
Externí odkaz:
http://arxiv.org/abs/1712.08301
Publikováno v:
Phys. Rev. Lett. 120, 133205 (2018)
Experiments with antihydrogen ($\overline{\text{H}}$) for a study of matter--antimatter symmetry and antimatter gravity require ultracold $\overline{\text{H}}$ to reach ultimate precision. A promising path towards anti-atoms much colder than a few ke
Externí odkaz:
http://arxiv.org/abs/1712.08275
Autor:
Vilas, N. B., Wang, B. -Y., Rupasinghe, P. M., Maser, D. L., Safronova, M. S., Safronova, U. I., Majumder, P. K.
Publikováno v:
Phys. Rev. A 97, 022507 (2018)
We report measurements of the $^{115}$In $7p_{1/2}$ and $7p_{3/2}$ scalar and tensor polarizabilities using two-step diode laser spectroscopy in an atomic beam. The scalar polarizabilities are one to two orders of magnitude larger than for lower lyin
Externí odkaz:
http://arxiv.org/abs/1712.07706
Publikováno v:
Phys. Rev. Lett. 120, 063204 (2018)
We address the problem of the lattice Stark shifts in the Sr clock caused by the multipolar $M1$ and $E2$ atom-field interactions and by the term nonlinear in lattice intensity and determined by the hyperpolarizability. We have developed an approach
Externí odkaz:
http://arxiv.org/abs/1711.03957
Publikováno v:
Phys. Rev. A 97, 012502 (2018)
Energy levels, wavelengths, magnetic-dipole and electric-quadrupole transition rates between the low-lying states are evaluated for W$^{51+}$ to W$^{54+}$ ions with $3d^n$ (n = 2 to 5) electronic configurations using an approach combining configurati
Externí odkaz:
http://arxiv.org/abs/1710.04596
Publikováno v:
Phys. Rev. A 96, 012509 (2017)
We calculate the g-factor of the 6s6p 3P0 state of 199 and 201 mercury isotopes using a relativistic high-precision all-order method that combines the configuration interaction and the coupled-cluster approaches. Our values $g(199Hg) = -0.9485(49)*10
Externí odkaz:
http://arxiv.org/abs/1703.01349