Accession Number:

AD0768925

Title:

Metal Oxidation in a Vacuum Tank

Descriptive Note:

Final technical rept. 1 Jan-1 Jun 1973

Corporate Author:

ATLANTIC RESEARCH CORP ALEXANDRIA VA

Personal Author(s):

Report Date:

1973-07-01

Pagination or Media Count:

27.0

Abstract:

Experiments were performed by a technique in which the metal is vaporized from an electrically heated container made of tantalum or tungsten. This technique was demonstrated to be efficient for quantitative metal-release studies. Eleven releases of aluminum into air have been made with metal-vapor flow rates of the order of 50 mgsec at heater temperatures of 2400K, over the high-altitude chamber pressures from 13.6 to 0.2 Torr 35 to 60km altitude. All these releases generated visible luminosity, ascribed to the doublet B to doublet X AlO band spectrum. An approximate analysis of the spectral intensities indicates formation of AlO in the ground vibrational state, probably by the rapid reaction Al O2 to AlO O. Chemiluminescence caused by active species O,O3 is not indicated. Attempts to demonstrate release of uranium were unsuccessful.

Subject Categories:

  • Atmospheric Physics
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE