## The *Z*^{4} scaled radiative transition probabilities *A*_{di} (*s*^{−1}) for the 2s*n*p ^{1, 3}P_{1} → 2s^{2}2p^{6} ^{1}S_{0} (6 ≤ *n* ≤ 13) transition and Auger branch ratios *B*_{a} of different states of Fe^{16+}, Kr^{26+} and Xe^{44+}, as a function of the principal number *n*

_{di}

_{a}

**Figure 3.** The *Z*^{4} scaled radiative transition probabilities *A _{di}* (

*s*

^{−1}) for the 2s

*n*p

^{1, 3}P

_{1}→ 2s

^{2}2p

^{6}

^{1}S

_{0}(6 ≤

*n*≤ 13) transition and Auger branch ratios

*B*of different states of Fe

_{a}^{16+}, Kr

^{26+}and Xe

^{44+}, as a function of the principal number

*n*.

**Abstract**

Photoionization (PI) cross sections of the ground state 1s^{2} 2s^{2} 2p^{6}^{1} S_{0} of Ne-like Ar^{8+}, Fe^{16+}, Kr^{26+} and Xe^{44+} ions are calculated by using the Dirac atomic *R*-matrix code based on a fully relativistic *R*-matrix method. To analyze the detailed resonant structure, systematical calculations based on the multiconfiguration Dirac–Fock method are performed for the dominant 2s → *n*p resonant transitions, and the resonant energies, strengths and total natural widths are presented. The resonant structures and characteristics of the PI cross sections and resonance strengths along the Ne-like sequence are discussed with emphasis on the influence of relativistic effects. For the Ar^{8+} ion, good agreement is found between the present results and available theoretical calculations and experimental data.