Recirculating cryogenic hydrogen maser

Journal Article · Fri Aug 01 00:00:00 EDT 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.34.1605· OSTI ID:5655806

Huerlimann, M D; Hardy, W N; Berlinsky, A J; Cline, R W

We report on the design and initial testing of a new type of hydrogen maser, operated at dilution refrigerator temperatures, in which H atoms circulate back and forth between a microwave-pumped state selector and the maser cavity. Other novel design features include liquid-/sup 4/He-coated walls, He-cooled electronics, and the use of microscopic magnetic particles to relax the two lowest hyperfine levels in the state selector. Stabilities at least as good as that of a Rb clock and a high-stability quartz oscillator are observed for measuring times between 1 and 300 s.

• Research Organization: Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada V6TX6
• OSTI ID: 5655806
• Journal Information: Phys. Rev. A; (United States), Vol. 34:2
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
MASERS
DESIGN
PERFORMANCE TESTING
CIRCULATING SYSTEMS
CRYOGENICS
FREQUENCY MEASUREMENT
HELIUM DILUTION REFRIGERATORS
HYDROGEN
STABILITY
STANDARDIZATION
ULTRALOW TEMPERATURE
USES
AMPLIFIERS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
NONMETALS
REFRIGERATORS
TESTING
440300* - Miscellaneous Instruments- (-1989)