Accession Number:

AD0744097

Title:

Atomic Oxygen Absorption Cell System.

Descriptive Note:

Final rept. 15 Apr 70-15 Dec 71,

Corporate Author:

PHOTOCHEM INDUSTRIES INC FAIRFIELD N J

Personal Author(s):

• Cerkanowicz,Anthony E.
• Simon,Donald R.
• Levy,Maurice E.
• Strowe,Robert J.

Report Date:

1971-12-15

Pagination or Media Count:

71.0

Abstract:

An atomic oxygen absorption cell system has been developed for application in the measurement of absorption cross sections of atomic oxygen at wavelengths shorter than 910 A the first ionization threshold. The system is based on vacuum ultraviolet photodissociation of oxygen molecules via absorption of light in the Schumann-Runge continuum 1300 A to 1760 A. The necessary dissociative vacuum ultraviolet flux is supplied from a cylindrical, xenon, plasma source which surrounds a sapphire walled absorption cell. The pressure, annular thickness and length of the xenon plasma is variable. Analysis indicates that an oxygen atom concentration in excess of 90 can be achieved under steady operating conditions. The cell is constructed to be compatible with McPherson vacuum monochromators. Author

Descriptors:

• (*OXYGEN
• ATOMIC SPECTROSCOPY)
• ULTRAVIOLET SPECTROSCOPY
• ABSORPTION SPECTRA
• LABORATORY EQUIPMENT
• DISSOCIATION
• SOURCES

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE