have i understood this correctly? we can now fine tune electrons in
atoms?
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Hyperfine Interactions
Optical clock and ultracold collisions with trapped strontium atoms
T. Zelevinsky1 , M. M. Boyd1, A. D. Ludlow1, S. M. Foreman1, S.
Blatt1, T. Ido1 and J. Ye1
(1) JILA, University of Colorado, UCB 440, Boulder, CO 80309, USA
T. Zelevinsky
Email: tz@[EMAIL PROTECTED]
online: 19 June 2007
Abstract With microkelvin neutral strontium atoms confined in an
optical lattice, we have achieved a fractional resolution of better
than 5=D710=9615 on the 1 S 0=963 P 0 doubly forbidden 87Sr clock
transition=
at 698 nm. Measurements of the clock line ****fts as a function of
experimental parameters indicate that the fractional uncertainties due
to systematic ****fts could be reduced below 10=9615. The ultrahigh
spectral resolution permitted resolving the nuclear spin states of the
clock transition at small magnetic fields, leading to measurements of
the 3 P 0 magnetic moment and metastable lifetime. In addition,
photoassociation spectroscopy was performed on the narrow 1 S 0=963 P 1
transition of 88Sr, revealing the least-bound state, and showing
promise for efficient optical tuning of the ground state scattering
length and production of cold molecules.
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