Accession Number : ADP002451

Title :   Performance of Compact Hydrogen Masers,

Corporate Author : JET PROPULSION LAB PASADENA CA

Personal Author(s) : Kirk,A.

Report Date : 1983

Pagination or Media Count : 7

Abstract : Compact hydrogen masers have been built and are under continuing development at several organizations. JPL maintains a special facility which is dedicated to testing, evaluating, improving and maintaining state of the art frequency standards. This paper presents the results of a series of tests that were performed at this facility on two different types of compact hydrogen masers. One of these masers is a prototype unit developed by Hughes Research Laboratories, Malibu, CA for the United States Naval Research Laboratory. This maser uses Q-enhancement to achieve cavity oscillation and is equipped with a cavity tuning servo system. The other is a prototype passive hydrogen maser also equipped with a cavity tuning servo system. The other is a prototype passive hydrogen maser also equipped with a cavity tuning servo system and was developed by the National Bureau of Standards, Boulder, CO. The data presented includes output frequency versus certain environmental parameters, Allan variance and drift. The work on the Hughes Research maser was sponsored by the United States Naval Research Laboratory (NRL). The NBS passive maser development was sponsored by the National Aeronautics and Space Administration (NASA) and NRL. (Author)

Descriptors :   *Frequency standards, *Masers, Hydrogen, Compacting, Prototypes, Test and evaluation, Oscillation, Stability, Temperature, Pressure

Distribution Statement : APPROVED FOR PUBLIC RELEASE