title: JPL Ultrastable Trapped Ion Atomic Frequency Standards.
abstract: Recently, room temperature trapped ion atomic clock development at the Jet Propulsion Laboratory (JPL) has focused on three directions: 1) ultrastable atomic clocks, usually for terrestrial applications emphasizing ultimate stability performance and autonomous timekeeping; 2) new atomic clock technology for space flight applications that require strict adherence to size, weight, and power requirements; and 3) miniature clocks. In this paper, we concentrate on the first direction and present a design and the initial results from a new ultrastable clock referred to as L10 that achieves a short-term stability of 4.5 ×10(-14)/τ(1/2) and an initial measurement of no significant drift with an uncertainty of 2.4 ×10(-16) /day over a two-week period.
authors.forename: Eric A
authors.initials: EA
authors.lastname: Burt
authors.forename: Lin
authors.initials: L
authors.lastname: Yi
authors.forename: Blake
authors.initials: B
authors.lastname: Tucker
authors.forename: Robert
authors.initials: R
authors.lastname: Hamell
authors.forename: Robert L
authors.initials: RL
authors.lastname: Tjoelker