NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Relativistic CI calculations of spectroscopic data for the 2p6 and 2p53l configurationsin Ne-like ions between Mg III and Kr XXVII
Published
Author(s)
P. Jonsson, P. Bengtsson, J. Ekman, S. Gustafsson, L. B. Karlsson, G. Gaigalas, D. Kato, Charlotte F. Fischer, I. Murakami, H. A. Sakaue, H. Hara, T. Watanabe, N. Nakamura, N. Yamamoto
Abstract
Energies, E1, M1, E2, M2 transition rates, oscillator strengths, and lifetimes from relativistic configuration interaction calculations are reported for the states of the 2p6, 2p53s, 2p53p, and 2p53d, configurations in all Ne-like ions between Mg III and Kr XXVII. Core-valence and core-core correlation effects are accounted for through SD-expansions to increasing sets of active orbitals. The Breit interaction and leading QED effects are included as perturbations. The results are compared with experiments and other recent benchmark calculations. In Mg III, Al IV, Si V, P VI, S VII, and Ar IX, for which experimental energies are known to high accuracy, the mean error in the calculated energies is only 0.011%.
Jonsson, P.
, Bengtsson, P.
, Ekman, J.
, Gustafsson, S.
, Karlsson, L.
, Gaigalas, G.
, Kato, D.
, Fischer, C.
, Murakami, I.
, Sakaue, H.
, Hara, H.
, Watanabe, T.
, Nakamura, N.
and Yamamoto, N.
(2013),
Relativistic CI calculations of spectroscopic data for the 2p6 and 2p53l configurationsin Ne-like ions between Mg III and Kr XXVII, Atomic Data and Nuclear Data Tables, [online], https://doi.org/10.1016/j.adt.2013.06.001, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=909734
(Accessed October 14, 2025)