NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Evaluation of the characteristics of a field emission cathode for use in a Mercury ion trap frequency standardThe performance is reported of a field emission array characterized for the purpose of replacing the filament in a trapped ion frequency standard. This dark electron emitter eliminates the need for the interference filter currently used in the trapped ion standard. While reducing the filament's unwanted light, this filter causes a significant reduction in the signal. The magnetic field associated with the filament is also eliminated, thus potentially improving the present stability of the trapped ion standard. The operation of the filament in the present system is described, as well as the associated concerns. The cathode considered for the filament's replacement is then described along with the experimental system. Experimental results, observations, and conclusions are presented.
Document ID
19890000822
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Christman, J. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 5, 2013
Publication Date
August 15, 1988
Publication Information
Publication: The Telecommunications and Data Acquisition Report
Subject Category
Electronics And Electrical Engineering
Accession Number
89N10193
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available