Accession Number:

AD0252535

Title:

MOLECULAR DIFFUSION

Descriptive Note:

Corporate Author:

GEOPHYSICS CORP OF AMERICA BOSTON MA

Personal Author(s):

Report Date:

1961-01-01

Pagination or Media Count:

1.0

Abstract:

The Chapman-Enskog method of correcting the velocity distribution function is found to be applicable in the case of the mutual diffusion of two neutral gases and also in the case of diffusion of ions in a neutral gas under the influence of an electric field. In both cases, the diffusion cross section may be calculated according to classical theory and quantum theory. The theoretical predictions are compared with experimental data. Data are included for drift velocities of various ions as a function of field strength divided by pressure. The interaction of diffusing ions of different sign is investigated. An AMBIPOLAR DIFFUSION COEFFICIENT MAY BE DEFINED WHEN THERE IS NO MAGNETIC FIELD PRESENT AND THE PLASMA CONDUCTIVITY IS EITHER SMALL OR LARGE. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE