Resonances in the Photoionization Continuum of Kr and Xe

Abstract

A total of 153 krypton resonances in the spectral region 500-337 Å, and 254 xenon resonances in the spectral region 600-375 Å are reported. The disposition of the detailed line lists are indicated. The analysis is very incomplete and will require detailed theoretical calculations to advance. In krypton, 45 resonances and in xenon, 56 resonances have been grouped into probable Rydberg series, for which classifications are suggested. In general, the resonances observed are due to the excitation of the inner subshell "$s$" electron ($n{s}^{2}n{p}^6\to \mathrm{nsn}{p}^6\mathrm{mp}$) or to the excitation of two of the outer electrons simultaneously ($n{s}^{2}n{p}^6\to n{s}^{2}n{p}^4\mathrm{ml}{l}^{\prime }$). These highlying excited states autoionize, resulting in resonances with window-, asymmetric-, and absorption-type profiles. The detailed lists for the subshell "$s$" electron excitations are given.