Accession Number:

AD0758232

Title:

Effects of Electron Temperature Variations on Spectral Line Intensity Ratios.

Descriptive Note:

Final technical rept.,

Corporate Author:

AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1973-02-01

Pagination or Media Count:

133.0

Abstract:

Time-varying a.c. arcs or positive columns are used in discharges in gas mixtures, especially laser discharges and a d.c. discharge may spontaneously support oscillations or turbulence. An analysis is made of the errors that arise in line-intensity measurements due to the experimental averaging of the time-varying intensities caused by electron-temperature fluctuations in continuous plasma sources. These calculations are applicable for both periodic and for random electron-temperature fluctuations. A method, which is shown to be subject to less error, is to use a polychromator and to measure the average ofthe instantaneous line-intensity ratio. The results are presented in a series of graphs in both dimensional and non-dimensional form to cover the parameter space of interest in the diagnostics of most turbulent plasmas. Author Modified Abstract

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE