Accession Number:

AD0748472

Title:

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

Descriptive Note:

Technical management rept. no. 3, 1 Dec 71-29 Feb 72,

Corporate Author:

MIDWEST RESEARCH INST KANSAS CITY MO

Report Date:

1972-03-27

Pagination or Media Count:

58.0

Abstract:

The research concerns characterizing the nature and thermodynamics of species evaporating from graphite. Several equipment modifications are described which are designed to increase the time response of the bean-chopper reference signal. The major reseach effort was concerned with attempts to understand the rather puzzling and unexpected results obtained in time-of-flight velocity analysis of carbon vapor species. Ions from carbon vapor as well as several consensible gases, showed double humped time-of-arrival peaks. Ion source trapping in the Nuclide double-aperture ion source seems definitely to be involved, but simple trapping alone does not appear to account for the behavior of the C3 ion.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE