Accession Number:

AD0744493

Title:

Exploratory Development to study Graphite Vaporization Kinetics and Thermodynamics using the Modulated Beam Mass Spectrometer

Descriptive Note:

Quarterly rept. no. 1, 1 May-31 Jul 1971

Corporate Author:

AVCO CORP LOWELL MA SYSTEMS DIV

Personal Author(s):

• Steele, Warren C.
• Bourgelas, Frederick N.

Report Date:

1971-07-31

Pagination or Media Count:

22.0

Abstract:

Progress is reported in a program of mass spectrometric studies of graphite vaporization kinetics. Emphasis has been placed on measurement of reflection coefficients for the three major constituents of carbon vapor impinging on a heated graphite surface. Use of modulation techniques has been employed to detect a reflected beam interacting with the graphite surface to Ts or 2600K. Development of a vapor source for an isotopically enriched carbon beam using graphite powder is described.

Descriptors:

• *GRAPHITE
• *MASS SPECTROSCOPY
• *CARBON
• *VAPORIZATION
• REENTRY VEHICLES
• SOURCES
• SURFACES
• MOLECULAR BEAMS
• ATMOSPHERE ENTRY
• REACTION KINETICS
• POLYATOMIC MOLECULES

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE