Theoretical and experimental resonance strengths for KLL dielectronic recombination (DR) into He-, Li-, Be-, and B-like mercury ions are presented, based on state-resolved DR x-ray spectra recorded at the Heidelberg electron-beam ion trap. The DR resonance strengths are experimentally extracted by normalizing them to simultaneously recorded radiative recombination signals. The results are compared to state-of-the-art atomic calculations that include relativistic electron correlation and configuration mixing effects. Combining the present data with other existing ones, we derive an improved semiempirical Z-scaling law for DR resonance strengths as a function of the atomic number, taking into account higher-order relativistic corrections, which are especially relevant for heavy highly charged ions.
Z. Harman et al., "Resonance Strengths for KLL Dielectronic Recombination of Highly Charged Mercury Ions and Improved Empirical Z -Scaling Law," Physical Review A, vol. 99, no. 1, American Physical Society (APS), Jan 2019.
The definitive version is available at https://doi.org/10.1103/PhysRevA.99.012506
Keywords and Phrases
Atoms; Electron resonance; Mercury (metal), Atomic calculations; Dielectronic recombinations; Heidelberg electron beam ion traps; Highly charged ions; Radiative recombination; Relativistic correction; Relativistic electron; Resonance strengths, Ions
International Standard Serial Number (ISSN)
Article - Journal
© 2019 American Physical Society (APS), All rights reserved.
01 Jan 2019