Ionization energies along beryllium isoelectronic sequence

A. V. Malyshev, A. V. Volotka, D. A. Glazov, I. I. Tupitsyn, V. M. Shabaev, and G. Plunien
Phys. Rev. A 92, 012514 – Published 21 July 2015

Abstract

Ionization energies for the ground state of berylliumlike ions with nuclear charge numbers in the range 16Z96 are rigorously evaluated. The calculations merge the ab initio QED treatment in the first and second orders of the perturbation theory in the fine-structure constant α with the third- and higher-order electron-correlation contributions evaluated within the Breit approximation. The nuclear recoil and nuclear polarization effects are taken into account. The accuracy of the ionization energies obtained has been significantly improved in comparison with previous calculations.

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  • Received 10 June 2015

DOI:https://doi.org/10.1103/PhysRevA.92.012514

©2015 American Physical Society

Authors & Affiliations

A. V. Malyshev1,2, A. V. Volotka1,3, D. A. Glazov1,2,3, I. I. Tupitsyn1, V. M. Shabaev1, and G. Plunien3

  • 1Department of Physics, St. Petersburg State University, Ulianovskaya 1, Petrodvorets, 198504 St. Petersburg, Russia
  • 2State Scientific Centre “Institute for Theoretical and Experimental Physics” of National Research Centre “Kurchatov Institute”, B. Cheremushkinskaya 25, 117218 Moscow, Russia
  • 3Institut für Theoretische Physik, Technische Universität Dresden, Mommsenstraße 13, D-01062 Dresden, Germany

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Vol. 92, Iss. 1 — July 2015

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