Title :
Application of monochromatic image method in arc plasma diagnostics
Author :
Xu, Chenming ; Gao, Hongming ; Wu, Lin
Author_Institution :
State Key Lab. of Adv. Welding Production Technol., Harbin Inst. of Technol., China
fDate :
4/1/2005 12:00:00 AM
Abstract :
An unsaturated image of a TIG arc was acquired using a high-speed charge coupled device (CCD) camera with a narrow-band filter. The spatial distribution of the plasma emission coefficient was reconstructed. The emission coefficient was calculated, allowing distributions of temperature and electron densities to be determined. The results are compared with those obtained from spectroscopic analysis. Good agreement was obtained, except for the shape of outer contours, demonstrating the reliability of the monochromatic image.
Keywords :
arcs (electric); high-speed optical techniques; plasma density; plasma diagnostics; plasma temperature; CCD camera; arc plasma diagnostics; electron densities; high-speed charge coupled device camera; monochromatic image; narrow-band filter; plasma emission coefficient; plasma temperature; spectroscopy; unsaturated image; Charge coupled devices; Charge-coupled image sensors; Filters; Image reconstruction; Narrowband; Plasma applications; Plasma density; Plasma devices; Plasma diagnostics; Plasma temperature; Abel inversion; arc discharges; emission coefficient; high-speed camera; narrow-band filter; radiation intensity;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.845137
