Measurement of the 2P1/2–2P3/2 fine structure splitting in fluorine-like Kr, W, Re, Os and Ir

Published

September 2, 2020

Author(s)

Galen O'Neil, Samuel C. Sanders, Paul Szypryt, Dipti Goyal, Amy Gall, Yang Yang, Samuel M. Brewer, William Doriese, Joseph Fowler, Daniel Swetz, Joseph Tan, Joel Ullom, Andrey V. Volotka, Endre Takacs, Yuri Ralchenko

Abstract

Quantum electrodynamics (QED) is currently considered to be one of the most accurate theories of fundamental interactions. As its extraordinary precision offers unique scientific opportunities, e.g., search for new physics, stringent experimental tests of QED continue to be of high importance. To this end, highly charged ions represent an exceptional testbed due to enhanced QED effects. Recently, forbidden transitions in F-like ions have been analyzed to few ppm precision, resolving previous discrepancies between theory and experiment. Here we further test the accuracy of QED calculations with three new (Re, Os, Ir), and two improved (Kr, W) measurements of the 2P1/2-2P3/2 transition energy in F-like ions using the NIST electron beam ion trap and extreme-ultraviolet and x-ray spectrometers. Good agreement between theoretical and experimental energies is found for all considered elements.

Citation

Physical Review A

Volume

102

Issue

3

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevA.102.032803

Local Download

Keywords

Quantum electrodynamics, fine structure splitting, electron beam ion trap, x-ray spectrometers

Citation

O'Neil, G. , Sanders, S. , Szypryt, P. , Goyal, D. , Gall, A. , Yang, Y. , Brewer, S. , Doriese, W. , Fowler, J. , Swetz, D. , Tan, J. , Ullom, J. , Volotka, A. , Takacs, E. and Ralchenko, Y. (2020), Measurement of the 2P1/2–2P3/2 fine structure splitting in fluorine-like Kr, W, Re, Os and Ir, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.102.032803, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=930365 (Accessed October 16, 2025)