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Ultra-stable Hg(+) trapped ion frequency standardA fieldable trapped ion frequency standard based on Hg-199(+) ions confined in a hybrid rf/dc linear ion trap is developed. 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 a stability of 2 to 3 x 10(exp -15) was obtained for 10000 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 x 10(exp -13).
Document ID
19910016454
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Prestage, John D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Dick, G. John
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Maleki, Lute
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1990
Publication Information
Publication: The 22nd Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
Subject Category
Physics (General)
Accession Number
91N25768
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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