Measurement of isotope shifts,fine and hyperfine structure splittings of the lithium D lines |
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| Authors: | J. Walls R. Ashby J.J. Clarke B. Lu W.A. van Wijngaarden |
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| Affiliation: | (1) Physics Department, Petrie Bldg., York University, 4700 Keele St. Toronto, Ontario M3J 1P3, Canada, CA |
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| Abstract: | The lithium D lines were studied using a diode laser that was frequency modulated by an electro-optic modulator, to excite an atomic beam. The transmission of part of the laser beam through an etalon was monitored to correct for the nonlinearity of the laser scan. The results for the 6,7Li 2 S 1/2 and 2 P 1/2 hyperfine splittings agree very well with the best existing data while those for the D1 isotope shift and 6,7Li fine structure splittings disagree significantly from data obtained by a previous laser atomic beam experiment. Our result for the D1 isotope shift is very close to the latest value computed using Hylleraas variational theory. Received 8 April 2002 / Received in final form 26 June 2002 Published online 21 January 2003 RID="a" ID="a"e-mail: wvw@yorku.ca |
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| Keywords: | PACS. 32.10.Fn Fine and hyperfine structure – 32.30.Jc Visible and ultraviolet spectra |
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