Accession Number:

AD0785136

Title:

Vaporization Kinetics and Thermodynamics of Graphite Using the High Pressure Mass Spectrometer.

Descriptive Note:

Final technical rept. 1 Jul 68-15 Oct 73,

Corporate Author:

MIDWEST RESEARCH INST KANSAS CITY MO

Report Date:

1974-05-01

Pagination or Media Count:

224.0

Abstract:

An apparatus for producing and sampling graphite vapor was developed and studies of the vaporization of graphite were performed. An all-graphite Knudsen cell was heated to about 3300K in vacuum without significant heating of the beam system walls or occurrence of objectionable outgassing. A continuously operating vacuum viewport and automatic pyrometer system allowed temperature monitoring under rapid window darkening conditions produced during vaporization runs. An extensive experimental determination of the neutral time-of-flight behavior of both carbon and low temperature gaseous species was done. Various ionic carbon clusters are identified. Experimental design and equipment are discussed. Modified author abstract

Subject Categories:

  • Ceramics, Refractories and Glass
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE