Evaluation of temperature in corona discharges in liquid argon

Author

Bonifaci, N. ; Nur, M. ; Denat, A. ; Atrazhev, V. ; Trassy, C.

Author_Institution

Lab. d´´Electrostat. et de Mater. Dielectr., Univ. Joseph Fourier, Grenoble, France

fYear

1999

fDate

1999

Firstpage

441

Lastpage

444

Abstract

Previous studies of the electrical conduction phenomena in argon using point plane electrodes have shown that corona from low pressure gas (P_∞>0.2 MPa) up to the liquid state. Moreover, electrical and transport parameters are mainly a function of fluid density N. For each density, above a threshold voltage V_k, the electric current I which is space charge limited is correlated to an intense light emission confined close to the tip needle. The spectral analysis of the emitted light can be used to evaluate some parameters of this non equilibrium weakly ionised region. For example, the kinetic temperature T_k in the corona region has been deduced from pressure broadening of several selected lines of argon

Keywords

argon; corona; dielectric liquids; discharges (electric); plasma temperature; 0.2 MPa; Ar; corona discharges; electric current; electrical conduction phenomena; electrical parameters; emitted light; fluid density; intense light emission; kinetic temperature; liquid Ar; liquid state; low pressure gas; nonequilibrium weakly ionised region; plane electrodes; pressure broadening; spectral analysis; temperature; tip needle; transport parameters; Argon; Corona; Current; Electrodes; Kinetic theory; Needles; Space charge; Spectral analysis; Temperature; Threshold voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on

Conference_Location

Nara

Print_ISBN

0-7803-4759-5

Type

conf

DOI

10.1109/ICDL.1999.798967

Filename

798967