Multichannel-quantum-defect analysis of the odd-parityJ=0 spectra of xenon

New data on odd-parity autoionization in xenon have provided an opportunity to apply multichannel-quantum-defect theory (MQDT) to the J=0 spectra. This analysis complements the many studies of the J=1 spectra. Nine bound and seven autoionizing levels were analyzed. The resulting MQDT parameters are able to reproduce the measured energy levels with an rms error of 0.33 ${\mathrm{cm}}^{\mathrm{-}1}$, and predictions of autoionization rates are in good agreement with observed linewidths. The position and width of the lowest J=0 autoionization resonance, the 8s’ ${\left[\mathrm{}\right(1/2\left)\mathrm{}\right]}_0$ level, are predicted.