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

Volume

33

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

304

Lastpage

305

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.845137

Filename

1420448