[time-nuts] Hyperfine splittings

Tom Van Baak tvb at leapsecond.com
Tue Nov 7 21:43:52 EST 2006


> Hi!
>
> I have collected some hyperfine splittings into a table with references.
> I was reminded of this when asked offlist for the Rubidium splitting
frequency.
> Naturally, I would welcome feedback and contributions of both better
resolution
> measures as well as more isotopes.
>
> http://rubidium.dyndns.org/~magnus/physics/hyperfine/

Magnus,

Nice page. I have 1 420 405 751.768 ± 0.002 Hz for
hydrogen at my "hyperfine" page:

http://www.leapsecond.com/pages/unix/

Also, for a a fresh Hg199+ reference see:

Laser-Cooled Mercury Ion Frequency Standard
D.J. Berkeland, J.D. Miller, J.C. Bergquist, W.M. Itano, and D.J. Wineland
Phys. Rev. Lett. 80, 2089-2092 (1998)
http://prola.aps.org/abstract/PRL/v80/i10/p2089_1
http://www.tf.nist.gov/timefreq/general/pdf/1225.pdf

/tvb







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