Accession Number : ADA329637

Title :   Precision Measurements with Hydrogen and Rubidium Masers

Descriptive Note : Final rept. 1 May 95-30 Apr 97

Corporate Author : SMITHSONIAN ASTROPHYSICAL OBSERVATORY CAMBRIDGE MA

Personal Author(s) : Walsworth, Ronald L.

PDF Url : ADA329637

Report Date : AUG 1997

Pagination or Media Count : 9

Abstract : This AASERT grant supported Ph.D. thesis research on two new atomic clocks: the cryogenic hydrogen maser and the double bulb rubidium maser. The cryogenic hydrogen maser (CHM) operates at low temperatures, and may provide frequency stability that is one to three orders of magnitude better than a room temperature hydrogen maser because of greatly reduced thermal noise and larger signal power. The double bulb rubidium maser (DBRM) may have frequency stability comparable to that of a room temperature hydrogen maser but in a smaller, more robust, and lower cost package.

Descriptors :   *CRYOGENICS, *MASERS, *ATOMIC CLOCKS, SPACE TECHNOLOGY, STATE OF THE ART, MICROWAVES, HYDROGEN, NOISE REDUCTION, RUBIDIUM, FREQUENCY STABILIZERS, QUANTUM COUNTERS.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE