Relativistic configuration-interaction calculation of $K\alpha$ transition energies in beryllium-like iron

Abstract

We perform relativistic configuration-interaction calculations of the energy levels of the low-lying and core-excited states of beryllium-like iron, Fe${}^{22+}$. The results include the QED contributions calculated by two different methods, the model QED operator approach and the screening-potential approach. The uncertainties of theoretical energies are estimated systematically. The predicted wavelengths of the Kαtransitions in beryllium-like iron improve previous theoretical results and compare favorably with the experimental data.

References in corpus (3)

• Relativistic recoil, electron-correlation, and QED effects on the 2p_j-2s transition energies in Li-like ions
• Hyperfine structure of Li and Be^+
• Hyperfine structure of S states in Li and Be^+

Cited by in corpus (6)

• QED calculation of the ground-state energy of berylliumlike ions
• Relativistic configuration-interaction calculations of energy levels of the $1s^{2}2l$ and $1s2l2l^{\prime }$ states in lithium-like ions: carbon through chlorine
• Relativistic calculations of the ground and inner-L-shell excited energy levels of berylliumlike ions
• Wave-packet propagation based calculation of above-threshold ionization in the x-ray regime
• Multiple photodetachment of atomic anions via single and double core-hole creation
• QED calculations of the $2p$-$2s$ transition energies in Li-like ions