Kono, MitsuhikoHe, YabaiOrr, Brian JBaldwin, Kenneth2015-12-130953-4075http://hdl.handle.net/1885/70788Isotope energy shifts and hyperfine structure have been measured for 33 high-energy Rydberg levels of atomic xenon by sub-Doppler two-photon excitation spectroscopy, using narrowband pulses of coherent ultraviolet light at 205-213 nm generated by nonlinear-optical conversion processes. Rydberg levels are accessed at two-photon excitation energies in the 97 300-94 100 cm-1 range where isotope energy shifts and hyperfine structure have rarely been resolved; these Rydberg levels are 5p5 np [1/2]0 (n = 9-13), 5p5 np [3/2]2 (n = 9-13), 5p5 np [5/2]2 (n = 9-17), 5p5 nf [3/2]2 (n = 6-14) and 5p5 nf [5/2]2 (n = 6-10). The sub-Doppler spectra display diverse hyperfine-coupling effects, for which least-squares-fit spectroscopic parameters reflect the influence of angular momentum.1 vol.application/pdfen-AUKeywords: Atomic xenon; Conversion process; Energy shift; High energy; Hyperfine structure; Narrowband pulse; Rydberg levels; Spectroscopic parameters; Two-photon excitation spectroscopy; Two-photon excitations; Two-photon spectroscopy; Ultra-violet light; Isotopes201310.1088/0953-4075/46/3/0354012016-02-24