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Atoms 2017, 5(3), 25; doi:10.3390/atoms5030025

Wavelengths of the Self-Photopumped Nickel-Like 4f 1P1→4d 1P1 X-ray Laser Transitions

Institute of spectroscopy of RAS, Physicheskaya st., 5, Troitsk, 108840 Moscow, Russia
Academic Editor: Joseph Reader
Received: 31 January 2017 / Revised: 6 June 2017 / Accepted: 27 June 2017 / Published: 13 July 2017
(This article belongs to the Special Issue Spectra of Ionized Atoms: From Laboratory to Space)
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Abstract

The energies for the lower 3d3/24d3/2 [J = 1] and upper 3d3/24f5/2 [J = 1] working levels in the self-photopumped X-ray laser are analyzed along the Ni-like sequence. We have found some irregularities in these energy levels in the range Z = 42–49. The causes of the irregularities are studied. The list of elements that lase on the self-photopumped transition can be extended much further than originally known. We calculate the wavelengths of this transition in Ni-like sequence to Z = 79 using the relativistic perturbation theory with a zero approximation model potential. We estimate the wavelength accuracy for Z > 50 as Δλ/λ ≤ 0.005. View Full-Text
Keywords: X-ray lasers; spectroscopy of multicharged ions; self-photo pumped lasers X-ray lasers; spectroscopy of multicharged ions; self-photo pumped lasers
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ivanova, E. Wavelengths of the Self-Photopumped Nickel-Like 4f 1P1→4d 1P1 X-ray Laser Transitions. Atoms 2017, 5, 25.

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