Accession Number:

AD0269040

Title:

INSTRUMENTATION FOR THE DETERMINATION OF THE COMPOSITION OF THE UPPER ATMOSPHERE

Descriptive Note:

Corporate Author:

GEOPHYSICS CORP OF AMERICA BOSTON MASS

Personal Author(s):

Report Date:

1961-06-15

Pagination or Media Count:

1.0

Abstract:

The rocket-borne helium mass spectrometer testing was begun to find the optimum operating characteristics of the system. The main emphasis in the survey of literature dealing with helium in the atmosphere was focused on papers from the USSR. Helium partial pressure profiles were calculated for different assumptions about the height of the mictopause. The atomic species calibration system was tested in the laboratory and modifications based on these operations have been initiated in order to produce a better over-all system. The original of the GCA cold cathode ionization gauge was operated in the laboratory and a new, all fusion welded, metalceramic gauge was designed and assembled for testing. The vacuum gauge calibration system was used to calibrate ionization gauges as a secondary pressure standard. A revision of the 1959 ARDC Standard Atmosphere was issued during the past period by COESA. This revision was a result zensive survey of recent atmospheric research literature the basis for this revision is discussed. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE