Relativistic calculations of angle-dependent photoemission time delay
Angular dependence of photoemission time delay for the valence np3/2 and np1/2 subshells of Ar, Kr, and Xe is studied in the dipole relativistic random phase approximation. Strong angular anisotropy of the time delay is reproduced near respective Cooper minima while the spin-orbit splitting affects the time delay near threshold. ; A.S.K. acknowledges the support of the ARC Discovery grant DP120101805. V.K.D. acknowledges the support of the NSF under Grant No. PHY-1305085. P.C.D. acknowledges the support of a grant from the Department of Science and Technology, Government of India. S.T.M. was supported by the Division of Chemical Sciences, Basic Energy Science, Office of Science, US Department of Energy.