NASA NTRS · 19920000503
Atomic Clock Based On Linear Ion Trap
Abstract
Highly 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."
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Prestage, John D., Dick, G. John. 1992-09-01. Atomic Clock Based On Linear Ion Trap. https://ntrs.nasa.gov/citations/19920000503
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