Effects of Electron Temperature Variations on Spectral Line Intensity Ratios.
Final technical rept.,
AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
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
- Plasma Physics and Magnetohydrodynamics