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Accession Number:
AD0753713
Title:
Vaporization Kinetics and Thermodynamics of Graphite Using the High Pressure Mass Spectrometer.
Corporate Author:
MIDWEST RESEARCH INST KANSAS CITY MO
Report Date:
1972-12-01
Abstract:
A brief review of current studies of the vaporization of graphite is presented, followed by a detailed description of our own work. Apparatus improvements are described, which allow heating of all-graphite Knudsen cells to about 3300K in vacuum without significant heating of beam system walls or objectionable outgassing. A continuously operating vacuum viewport and automatic pyrometer system is described for temperature monitoring under rapid window darkening vaporization conditions. Preliminary equilibrium ion ratio measurements are presented for the species C1 - C7 at temperatures up to 3300K. Extensive experimental results are presented on the neutral time-of-flight behavior of both carbon and low temperature gaseous species, using both the Nuclide and the Bendix mass spectrometers. Author
Descriptive Note:
Final technical rept. 1 Jun 71-31 May 72,
Pages:
0076
Contract Number:
F33615-71-C-1577
File Size:
0.00MB
