EFFECTIVE COLLISION FREQUENCIES AND ELECTRIC CONDUCTIVITIES OF WEAKLY IONIZED N2, O2, N, O, NO, AND DRY AIR
Abstract
In calculating the electric conductivity of gases and plasmas, it is not sufficient to define only one effective collision frequency. Two independent quantities are defined and tabulated as a function of the ratios of microwave frequency to an average collision frequency for very weakly ionized O2, N2, and dry air, for 100 K > or = T > or = 2000 K, using the best experimental electron- neutral cross sections. The average electron-neutral collision frequency (defied for microwave frequencies which are much greater than collision frequency) was tabulated for N2, O2, N, O, NO, and air for T > or = 10,000 K. Also included are tables for an idealized singlecomponent weakly ionized gas whose collision frequency has a power law dependence on the velocity (with the exponent in the range of -3 to +3). The data could be applied to the interpretation of the attenuation of electromagnetic waves through the ionosphere, through rocket exhausts, in plasma diagnostics, radar blackout, reentry phenomena, etc.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1965
- Accession Number
- AD0468338
Entities
People
- Adolf R. Hochstim
Organizations
- Institute for Defense Analyses