A Study of Cryogenic Techniques for Operating Hydrogen Masers.

Abstract

Cryogenic Techniques are applied to the Atomic Hydrogen Maser Frequency Standard to extend the storage time of the atoms and reduce the thermal noise accompanying the signal and within the resonance linewidth. Oscillation has been achieved below 25K using wall coatings of frozen CF 4. A pair of new masers is under construction so that frequency stability improvement can be measured. Stability at the 10 to the -16th power level in Delta f/f for averaging time intervals of 1,000 seconds is expected at temperatures below 30K. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1980
Accession Number
ADA082937

Entities

People

  • Robert F. C. Vessot

Organizations

  • Smithsonian Astrophysical Observatory

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Atomic Beam Masers
  • Carbon Tetrafluoride
  • Collisions
  • Construction
  • Contracts
  • Frequency
  • Frequency Standards
  • Hydrogen
  • Jet Propulsion
  • Low Temperature
  • Masers
  • Measurement
  • Military Research
  • Observatories
  • Security
  • Standards
  • Time Intervals

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion science or combustion engineering.
  • Optical Physics and Photonics.