Dielectronic recombination in He-like, Li-like, and Be-like highly charged ions in the KLL and KLM manifolds

A. P. Kavanagh, H. Watanabe, Y. M. Li, B. E. O’Rourke, H. Tobiyama, N. Nakamura, S. McMahon, C. Yamada, S. Ohtani, and F. J. Currell

Phys. Rev. A 81, 022712 – Published 17 February 2010

Abstract

This paper reports a systematic study of the dependence on atomic number of the dielectronic recombination resonance strengths for He-like, Li-like and Be-like ions. Recent measurements of dielectronic recombination resonance strengths for the KLL and KLM manifolds for iron, yttrium, iodine, holmium, and bismuth are also described. The resonance strengths were normalized to calculated electron impact ionization cross sections. The measured resonance strengths generally agree well with theoretical calculations using the distorted wave approximation. However, KLM resonance strength measurements on high atomic number open-shell ions gave higher values than those suggested by calculations. Using recently measured data, along with existing results, scaling laws have been generated as a function of atomic number for He-like, Li-like, and Be-like ions in the KLL and KLM manifolds.

Received 7 May 2008

DOI:https://doi.org/10.1103/PhysRevA.81.022712

Authors & Affiliations

A. P. Kavanagh¹, H. Watanabe², Y. M. Li³, B. E. O’Rourke¹, H. Tobiyama², N. Nakamura², S. McMahon¹, C. Yamada², S. Ohtani², and F. J. Currell¹

¹Centre for Plasma Physics, International Research Centre for Experimental Physics, Queens University, Belfast, BT7 1NN, UK
²Institute for Laser Science and Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
³Institute of Applied Physics and Computational Mathematics, Post Office Box 8009, Beijing 100088, People’s Republic of China

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Vol. 81, Iss. 2 — February 2010

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