DocumentCode
3454713
Title
Barometric pressure-induced frequency offsets in hydrogen masers
Author
Dragonette, Richard A. ; Suter, Joseph J.
Author_Institution
Appl. Phys. Lab., Johns Hopkins Lab., Laurel, MD, USA
fYear
1991
fDate
29-31 May 1991
Firstpage
586
Lastpage
590
Abstract
Barometric pressure variations have been found to induce significant frequency shifts in atomic hydrogen masers by changing the compressive forces exerted on the maser´s electromagnetic cavity. The observed frequency shifts, which can be as large as 1 part in 10-13 , track rising and falling pressures symmetrically. The barometric pressure fluctuations control the maser´s aging rate for periods as short as a few hours and as long as two weeks
Keywords
ageing; atomic clocks; frequency measurement; frequency stability; hydrogen; masers; H masers; aging rate; barometric pressure fluctuations; barometric pressure induced frequency offsets; compressive forces; electromagnetic cavity; frequency shifts; Aging; Control systems; Electromagnetic fields; Frequency; Humidity; Hydrogen; Masers; Oscillators; Resonance; Sensor arrays;
fLanguage
English
Publisher
ieee
Conference_Titel
Frequency Control, 1991., Proceedings of the 45th Annual Symposium on
Conference_Location
Los Angeles, CA
Print_ISBN
0-87942-658-6
Type
conf
DOI
10.1109/FREQ.1991.145955
Filename
145955
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