Accession Number:

AD0728634

Title:

Temperature Profiles in Argon Induction Plasmas: Theory and Experiment.

Descriptive Note:

Rept. for Aug 70-Jan 71,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Report Date:

1971-08-01

Pagination or Media Count:

25.0

Abstract:

A comparison is made between recent temperature measurements of argon induction plasmas that include cases of annular geometry and calculations based on the one-dimensional Elengaas-Heller equation. Exact numerical solutions, as well as approximate closed-form solutions drived from a two-zone model are used. Good agreement is obtained for the central portion of the plasma column with the exact method used for all reported power inputs and with the approximate method used for medium power input. Near the walls, however, the experimental temperatures are considerably higher for all geometries and power inputs. It is argued that here electron diffusion causes an overpopulation of electron and thus an overestimation of gas temperatures when Saha equilibrium is assumed. Author

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE