Two-dimensional structure of PDP micro-discharge plasmas obtained using laser Thomson scattering

• Published in: IEEE transactions on plasma science Vol. 32; no. 1; pp. 127 - 134
• Main Authors: Hassaballa, S., Yakushiji, M., Young-Kee Kim, Tomita, K., Uchino, K., Muraoka, K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01-02-2004; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Density measurement; Display; Display systems; Electric discharges; Electrodes; Electronics; Electrons; Exact sciences and technology; Flat panel displays; Lasers; Optical (ultraviolet, visible, infrared) measurements; Optical scattering; Other gas discharges; Particle scattering; Physics; Physics of gases, plasmas and electric discharges; Physics of plasmas and electric discharges; Plasma; Plasma density; Plasma devices; Plasma diagnostic techniques and instrumentation; Plasma measurements; Plasma temperature; Spectroscopy; Surface discharges; Grating spectrometer; Plasma diagnostics; Electron temperature; Electric discharges; Plasma display panel; Electron density; Experimental study; Optical set up; Thomson scattering; Plasma temperature
• ISSN: 0093-3813; 1939-9375
• DOI: 10.1109/TPS.2004.823980

Laser Thomson scattering (LTS) has been applied for measurements of the electron density and electron temperature in micro-discharge plasmas for plasma-display panel research. A brief description of the method for overcoming the sparsity of scattered photons by the data accumulation technique is presented. Then, the technique of applying LTS to micro-discharge plasmas is described where the use of a specially designed triple-grating spectrometer has turned out to be essential. Improvements in the experimental setup to allow, for the first time, to collect laser LTS spectra at heights as close as to 60 /spl mu/m from the electrode surface are discussed. Spatial distributions of the electron density and electron temperature in the vertical direction above the electrode surface are presented. Finally, an extension of the measurements into two-dimensions, namely along the electrode surface and at different heights above the electrodes enabling to cover the discharge front to be made, are presented and compared with the results of optical emission measurements.