Time delay in photoionization of Xe 4d in the presence of relaxation effects.*

A photoionization time delay studies on atomic xenon is of significance owing to the range of correlation effects exhibited [1-4]. Most recently, studies of photoionization time delay of Xe 4d in the near threshold region have been examined experimentally [5]. In the present work Relativistic Random-Phase Approximation with Relaxation (RRPA-R) [6] has been used to study the time delay in photoionization of 4d subshell of atomic xenon. Comparison of present results with available theoretical [4] and experimental [5] results reveals the importance of core relaxation on the time delay in the photoionization of 4d subshell of Xe. [1] A S Kheifets et al., Phys. Rev. A 94 013423(2016) [2] M Magrakvelidze et al., Phys. Rev. A 94 013429(2016) [3] A Mandal et al., Phys. Rev. A 96 053407(2017) [4] A S Kheifets et al., J. Phys. B: At. Mol. Opt. Phys. 53, 115201(2020) [5] Zhong S et al., Nat Commun 11, 5042(2020) [6] V. Radojevic, et al., PRA 40 727 (1989).