Cold Hydrogen Maser Research at SAO (Smithsonian Astrophysical Observatory) and Related Developments,

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Abstract:

The cryogenically-cooled maser provides a means for measuring frequency shifts and relaxation properties of storage wall coating materials that can be frozen in place from substances normally in the gaseous phase. We report initial measurements for FEP-120 Teflon between 77K and 48K and compare them with the 372K to 77K data of de Saintfuscien. Some of the design features of the maser are described. The cryomasers hydrogen dissociator is located entirely within the vacuum enclosure and operates at 77K. The in-vacuum dissociator and other developments that have been adapted and tested in a room temperature maser, and that are applicable for both space and terrestrial use, are also discussed. Author

Author(s):
Vessot, R. F. C. ; Mattison, E. M. ; Imbier, E.
Author Organization(s):
SMITHSONIAN ASTROPHYSICAL OBSERVATORY CAMBRIDGE MA
Supplementary Note:
This article is from the Proceedings of the Annual Symposium on Frequency Control (37th), 1-3 Jun 83, Marriott Hotel, Philadelphia, Pennsylvania, AD-A136 673, p49-54.
Pagination:
0006

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Masers, *Frequency standards, Hydrogen, Cryogenics, Measurement, Plastic coatings, Atomic properties, Frequency
Keyword(s):
Component Reports
Report Date:
1982 Jan 01