Accession Number:

AD0269384

Title:

LOW-ENERGY ELECTRON SCATTERING FROM ATOMIC OXYGEN

Descriptive Note:

Corporate Author:

GENERAL DYNAMICS/POMONA CALIF

Personal Author(s):

Report Date:

1961-02-01

Pagination or Media Count:

1.0

Abstract:

The total cross section for the scattering of electrons by atomic O was measured as a function of electron energy from 2.3 to 11.6 ev. The number of electrons scattered from a region defined by the intersection of an electron beam and a modulated molecular O beam was compared with the number scattered when the O beam was partially dissociated. A radio-frequency discharge dissociated about 30 of the molecules. The degree of dissociation was measured with a mass spectrometer. From the data, the ratios of atomic to molecular scattering cross sections were obtained. The absolute atomic values were calculated by multiplying these ratios by the molecular O cross sections obtained by Bruche Ann. Physik 831065, 1957. The result is a virtually constant cross section of 6.2 0.5 a2o in the entire energy range studied. These results are compared with 5 theoretical estimates. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE