Phys. Rev. A 78, 032519 (2008) [7 pages]Second-order effects on the hyperfine structure of P states of alkali-metal atomsReceived 25 July 2008; published 18 September 2008 We analyze second-order M1-M1 and M1-E2 effects on the hyperfine structure (HFS) of the lowest-energy P states of alkali-metal atoms arising from the coupling of the two (J=1∕2,3∕2) fine-structure levels through the hyperfine interaction. We find these effects to be especially sizable in Li, leading to a 9σ correction to the most accurate reported experimental value of the A(P1∕2) HFS constant of 7Li [ Das and Natarajan J. Phys. B 41 035001 (2008)]. For the remaining alkali-metal systems, the results tabulated within may be referenced as higher precision is sought in experimental determination of the HFS constants. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.78.032519
DOI:
10.1103/PhysRevA.78.032519
PACS:
32.10.Fn, 31.15.A−
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