Resonance strengths and linear polarization of higher-order electronic recombination from Li-like to N-like ions
Phys. Rev. A 112, 012814 – Published 18 July, 2025
DOI: https://doi.org/10.1103/7r4g-jsx8
Abstract
A systematic investigation of resonance strengths of higher-order (HO) electronic recombination for Li-like to N-like highly charged ions with atomic numbers ranging from to 60 is carried out based on the relativistic configuration-interaction method. The calculated results are compared with the previous work of Beilmann et al. [Phys. Rev. Lett. 107, 143201 (2011)], revealing significantly lower HO recombination resonance strengths for low- ions. In the present work, the correction to the HO resonance strength results from the inclusion of configuration interaction in the initial state of electronic recombination. Furthermore, the angular correction and linear polarization of HO electronic recombination are investigated to facilitate the comparison of the calculated resonance strengths with the electron-beam ion-trap measurements. An unexpected polarization behavior of dielectronic and trielectronic recombination has been shown, suggesting a promising opportunity for further study of the HO electronic recombination process.
