Abstract
Level-crossing spectroscopy with pulsed two-photon excitation is used to determine life-times and for the first time to determine hyperfine splittings. The experiments have been performed on thalliumnP 3/2 states (n=8, 9 andn=8–11 respectively). By appropriate choice of the polarization and direction of incident light — and, thereby, of the two-photon transition operator — the signal ratio of neighbouring Δm=2 crossings is altered. Thus, in the case of overlapping crossings improved resolution can be obtained without further efforts.
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Part of thesis, Giessen 1987 (D 26)
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Hermann, G., Lasnitschka, G., Richter, J. et al. Determination of lifetimes and hyperfine splittings of Tl statesnP 3/2 by level-crossing spectroscopy with two-photon excitation. Z Phys D - Atoms, Molecules and Clusters 10, 27–33 (1988). https://doi.org/10.1007/BF01425578
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DOI: https://doi.org/10.1007/BF01425578