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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 19 — Sep. 10, 2012
  • pp: 21379–21384

Spectroscopy on a single trapped 137Ba+ ion for nuclear magnetic octupole moment determination

Nicholas C. Lewty, Boon Leng Chuah, Radu Cazan, B. K. Sahoo, and M. D. Barrett  »View Author Affiliations


Optics Express, Vol. 20, Issue 19, pp. 21379-21384 (2012)
http://dx.doi.org/10.1364/OE.20.021379


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Abstract

We present precision measurements of the hyperfine intervals in the 5D3/2 manifold of a single trapped Barium ion, 137Ba+. Measurements of the hyperfine intervals are made between mF = 0 sublevels over a range of magnetic fields allowing us to interpolate to the zero field values with an accuracy below a few Hz, an improvement on previous measurements by three orders of magnitude. Our results, in conjunction with theoretical calculations, provide a 30-fold reduction in the uncertainty of the magnetic dipole (A) and electric quadrupole (B) hyperfine constants. In addition, we obtain the magnetic octupole constant (C) with an accuracy below 0.1Hz. This gives a subsequent determination of the nuclear magnetic octupole moment, Ω, with an uncertainty of 1% limited almost completely by the accuracy of theoretical calculations. This constitutes the first observation of the octupole moment in 137Ba+ and the most accurately determined octupole moment to date.

© 2012 OSA

OCIS Codes
(020.2930) Atomic and molecular physics : Hyperfine structure
(300.6520) Spectroscopy : Spectroscopy, trapped ion

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: July 4, 2012
Revised Manuscript: August 22, 2012
Manuscript Accepted: August 25, 2012
Published: September 4, 2012

Citation
Nicholas C. Lewty, Boon Leng Chuah, Radu Cazan, B. K. Sahoo, and M. D. Barrett, "Spectroscopy on a single trapped 137Ba+ ion for nuclear magnetic octupole moment determination," Opt. Express 20, 21379-21384 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-19-21379


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