Lea, S N; Taghavi-Larigani, S*; Burt, E A*; Prestage, J D*; Tjoelker, R L* (2009) A New Trapped Ion Clock Based On 201Hg+. In: European Frequency and Time Forum – International Frequency Control Symposium) EFTF-IFCS Joint Conference 2009, 20-24 April 2009, Besancon, France.

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Abstract

There are two stable odd isotopes of mercury with singly ionized hyperfine structure suitable for a microwave clock: 199Hg+ and 201Hg+. Virtually all trapped mercury ion clocks to date have used the 199 isotope. We have begun to investigate the viability of a trapped ion clock based on 201Hg+. We have measured the unperturbed frequency of the 2S1/2 F=1, mF=0 to 2S1/2 F=2, mF=0 clock transition to be 29.9543658211(2) GHz. In this paper we describe initial measurements with 201Hg+ and new applications to clocks and fundamental physics.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Keywords:	Microwave frequency standard, time-variation, fundamental constants
Subjects:	Time and Frequency Time and Frequency > Microwave Frequency Standards
Last Modified:	02 Feb 2018 13:15
URI:	http://eprintspublications.npl.co.uk/id/eprint/4458

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