Observation of the nuclear magnetic octupole moment of ⁸⁷Rb from spectroscopic measurements of hyperfine intervals

Authors: Gerginov, V; Tanner, C E.; Johnson, W R.

Source: Canadian Journal of Physics, Volume 87, Number 1, January 2009 , pp. 101-104(4)

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Abstract:

The magnetic octupole moment of ⁸⁷Rb is determined from hyperfine intervals in the 5p ²P_3/2 state measured by Ye et al. Opt. Lett. 21, 1280 (1996). Hyperfine constants A = 84.7189(22) MHz, B = 12.4942(43) MHz, and C = -0.12(09) kHz are obtained from the published measurements. The existence of a significant value for C indicates the presence of a nuclear magnetic octupole moment Ω. Combining the hyperfine constants with atomic structure calculations, we obtain Ω = -0.58(39) bμ_N. Second-order corrections arising from the interaction with the nearby 5p ²P_1/2 state are found to be insignificant.PACS Nos.: 21.10.Ky, 32.10.Fn, 42.62.Fi

Nous déterminons le moment magnétique octupolaire du ⁸⁷Rb à partir des intervalles hyperfins dans l'état 5p ²P_3/2 mesurés par Ye et al. (Opt. Lett 21, 1280 (1996)). À partir de ces valeurs publiées, nous avons extrait les constantes hyperfines A = 84.7189(22) MHz, B = 12.4942(43) MHz et C = -0.12(09) kHz. Le fait que C ne soit pas nul indique l'existence d'un moment magnétique nucléaire octupolaire Ω. En combinant les constantes hyperfines extraites avec des calculs de structure atomique, nous obtenons Ω = -0.58(39) bμ_N. Nous trouvons que les corrections du second ordre provenant de l'interaction avec l'état proche 5p ²P_1/2 sont négligeables. [Traduit par la Rédaction]

Document Type: Research article

Publication date: 2009-01-01

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