Precise measurements of UV atomic lines: Hyperfine structure and isotope shifts in the 398.8 $\un{nm}$ line of $\chem{Yb}$

Banerjee, A and Rapol, UD and Das, D and Krishna, A and Natarajan, V (2003) Precise measurements of UV atomic lines: Hyperfine structure and isotope shifts in the 398.8 $\un{nm}$ line of $\chem{Yb}$. In: Europhysics Letters, 63 (3). pp. 340-346.

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Abstract

We demonstrate a technique for frequency measurements of UV transitions with sub-MHz precision. The frequency is measured using a ring-cavity resonator whose length is calibrated against a reference laser locked to the $D_2$ line of $^{87}Rb$. We have used this to measure the 398.8 nm ${^1S}_0 \leftrightarrow {^1P}_1$ line of atomic Yb. We report isotope shifts of all the seven stable isotopes, including the rarest isotope $^{168}Yb$. We have been able to resolve the overlapping $^{173}Yb$($F = 3/2$) and $^{172}Yb$ transitions for the first time. We also obtain high-precision measurements of excited-state hyperfine structure in the odd isotopes, $^{171}Yb$ and $^{173}Yb$. The measurements resolve several discrepancies among earlier measurements.

Item Type:	Journal Article
Publication:	Europhysics Letters
Publisher:	EDP Sciences
Additional Information:	The Copyright belongs EDP Sciences.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	09 May 2006
Last Modified:	19 Sep 2010 04:26
URI:	http://eprints.iisc.ac.in/id/eprint/6647

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