An interferometric method is used to improve the accuracy of the 7S-7P transition frequencies of three francium isotopes by I order of magnitude. The deduced isotope shifts for (209-211)Fr confirm the ISOLDE data. The frequency of the D(2) transition of (212)Fr-the accepted reference for all Fr isotope shifts-is revised, and a significant difference with the ISOLDE value is found. Our results will be a benchmark for the accuracy of the theory of Fr energy levels, a necessary step to investigate fundamental symmetries. (C) 2009 Optical Society of America
Sanguinetti, S., Calabrese, R., Corradi, L., Dainelli, A., Khanbekyan, A., DE MAURO, C., et al. (2009). Accurate measurements of transition frequencies and isotope shifts of laser trapped francium. OPTICS LETTERS, 34(7), 893-895 [10.1364/OL.34.000893].
Accurate measurements of transition frequencies and isotope shifts of laser trapped francium
KHANBEKYAN, A.;DE MAURO, C.;MOI, L.;MARIOTTI, E.;
2009-01-01
Abstract
An interferometric method is used to improve the accuracy of the 7S-7P transition frequencies of three francium isotopes by I order of magnitude. The deduced isotope shifts for (209-211)Fr confirm the ISOLDE data. The frequency of the D(2) transition of (212)Fr-the accepted reference for all Fr isotope shifts-is revised, and a significant difference with the ISOLDE value is found. Our results will be a benchmark for the accuracy of the theory of Fr energy levels, a necessary step to investigate fundamental symmetries. (C) 2009 Optical Society of America
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https://hdl.handle.net/11365/3108
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