ULTRA-STABLE Hg+ TRAPPED ION FREQUENCY STANDARD

J.D. Prestage, G.J. Dick, L. Maleki

Abstract:	We are developing a fieldable trapped ion frequency standard based on 199 Hg+ ions confined in a hybrid rfldc linear ion trap. This trap permits storage of large numbers of ions with reduced susceptibility to the second-order Doppler effect caused by the rf confining fields. In preliminary measurements we have obtained a stability of 2—3 · 10-15 for 10,000 second averaging times. These measurements were carried out with a 120 mHz wide atomic resonance line for the 40.5 GHz clock transition with a second order Doppler shift from the rf trapping field of 6*10^13.
Published in:	Proceedings of the 22th Annual Precise Time and Time Interval Systems and Applications Meeting December 4 - 6, 1990 Sheraton Premiere Hotel Vienna, Virginia
Pages:	171 - 186
Cite this article:	Prestage, J.D., Dick, G.J., Maleki, L., "ULTRA-STABLE Hg+ TRAPPED ION FREQUENCY STANDARD," Proceedings of the 22th Annual Precise Time and Time Interval Systems and Applications Meeting, Vienna, Virginia, December 1990, pp. 171-186.
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