National_Catalogues: The JPL Hg+ Extended Linear Ion Trap Frequency Standard: Status, Stability, and Accuracy Prospects

Title: The JPL Hg+ Extended Linear Ion Trap Frequency Standard: Status, Stability, and Accuracy Prospects
Identifier: ADA500848
STOAbstractExternal: Microwave frequency standards based on room temperature 199Hg+ ions in a Linear Ion Trap (LITS) presently achieve a signal-to-noise and line-Q-inferred short-term frequency stability of sigma sub y (tau) = 2x10E(exp -14)/tau(exp 1/2). Long-term stability has been measured for averaging intervals up to 5 months with apparent sensitivity to variations in ion number/temperature limiting the flicker floor to about 5x10E-16 at 100,000 seconds. A two-segment version of the linear ion trap (LITE) has also recently demonstrated excellent frequency stability for measurement intervals up to one week. Nearly an order of magnitude improvement in long-term stability compared to the LITS is expected since this trap configuration operates with reduced linear ion density during the microwave interrogation period.

STOAuthorExternal: CALIFORNIA INST OF TECHNOLOGY PASADENA JET PROPULSION LAB,Tjoelker, R. L., Prestage, J. D., Maleki, L.
STOClassificationExternal: N
STOKeywordsExternal: *ION TRAPS, DEEP SPACE NETWORK, FREQUENCY STABILITY, LITS(LINEAR ION TRAP STANDARD)
STOPublisher: USA
Language: English
STOReportSource: http://www.dtic.mil/docs/citations/ADA500848
Published: 12/1/1996

Created at 11/9/2016 3:26 PM by System Account
Last modified at 11/9/2016 3:26 PM by System Account

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