Article ID Journal Published Year Pages File Type
9585338 Journal of Electron Spectroscopy and Related Phenomena 2005 5 Pages PDF
Abstract
Two-photon double-resonant photoionization of Ar and Xe to their autoionizing states lying between the 2P3/2 and 2P1/2 ionic thresholds was carried out with the combination of a laser system and VUV synchrotron radiation from the storage ring at NSRRC. Tuning this radiation of narrow width to a selected Rydberg state was followed by excitation to even-parity levels of autoionization states with a tunable Ti:sapphire laser. The experimental results show two-photon ionization spectra of argon with a large ratio of signal to noise. When the intermediate state 3p5(2P1/2)3d′ [3/2]1 of argon is excited, the spectrum shows a weak continuous background and three autoionizing series 3p5nf′[5/2]2 (n = 9-20), 3p5np′ [3/2]2 and 3p5np′ [1/2]0. The latter two series were resolved partly because of improved resolution in this work and partly because their relative intensities vary with the relative polarization of two excitation sources.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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