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Atomic Clock Based On Linear Ion TrapHighly stable atomic clock based on excitation and measurement of hyperfine transition in 199Hg+ ions confined in linear quadrupole trap by radio-frequency and static electric fields. Configuration increases stability of clock by enabling use of enough ions to obtain adequate signal while reducing non-thermal component of motion of ions in trapping field, reducing second-order Doppler shift of hyperfine transition. Features described in NPO-17758 "Linear Ion Trap for Atomic Clock." Frequency standard based on hyperfine transition described in NPO-17456, "Trapped-Mercury-Ion Frequency Standard."
Document ID
19920000503
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Prestage, John D.
(Caltech)
Dick, G. John
(Caltech)
Date Acquired
August 15, 2013
Publication Date
September 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 9
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
NPO-18382
Accession Number
92B10503
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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