Absorption spectrum of xenon in the vacuum-ultraviolet region

The absorption spectrum of atomic xenon in the wavelength region 922–1296 Å has been investigated with a 6.65-m vacuum spectrograph. The expected five ns and nd Rydberg series have been observed. The series have been extended as far as n = 66 for nd(3/2)1∘ and n = 65 for nd′(3/2)1∘. The ionization energies obtained are 97 833.7 and 108 370.8 cm−1 for 2P3/2 and 2P1/2 states of Xe ii, respectively. Absolute term values for xenon have been reevaluated.