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Isotope shifts in francium isotopes Fr206-213 and Fr-221
Collister, R. Gwinner, G. Tandecki, M. Aubin, Seth
Collister, R.
Gwinner, G.
Tandecki, M.
Aubin, Seth
Abstract
We present the isotope shifts of the 7s(1/2) to 7p(1/2) transition for francium isotopes Fr206-213 with reference to Fr-221 collected from two experimental periods. The shifts are measured on a sample of atoms prepared within a magneto-optical trap by a fast sweep of radio-frequency sidebands applied to a carrier laser. King plot analysis, which includes literature values for 7s(1/2) to 7p(3/2) isotope shifts, provides a field shift constant ratio of 1.0520(10) and a difference between the specific mass shift constants of 170(100) GHz amu between the D-1 and D-2 transitions, of sufficient precision to differentiate between ab initio calculations.
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2014-11-01
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Isotope_shifts.pdf
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Physics
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https://doi.org/10.1103/PhysRevA.90.052502