The gas temperature in the cathode surface - dark space boundary layer of an electrolyte cathode atmospheric glow discharge (ELCAD)

Abstract

The gas temperature was calculated in the cathode surface - dark space boundary layer in the case of the electrolyte cathode atmospheric glow discharge (ELCAD), taking into account the symmetrical charge transfer as a dominant collision. The gas temperature was found to be approximately 7000 K, which is in accordance with experimental results.

Investigations on the element dependency of sputtering process in the electrolyte cathode atmospheric discharge

“…Both indirect calculation 16 and recent spectroscopic measurements 17 give gas and electron temperatures in the range of 7000-8000 K at the near-water-surface region of the ELCAD discharge. Considering the observed 5 size of the cathode dark space in this atmospheric discharge (B0.1 mm) the temperature gradient at the water surface is close to 10 6 K cm À1 .…”

Spectroscopic and electrical studies of a solution-cathode glow discharge

“…In later papers, this design of GDE has been described as an electrolyte-cathode discharge (ELCAD). [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] Because of the necessity of the overflow connection in most designs, and because typical sample consumption is in the mL min À1 range, flow rates below 1.5 mL min À1 have not been reported and flow rates of about 8 mL min À1 are typical.…”

An atmospheric pressure glow discharge optical emission source for the direct sampling of liquid media

“…Cserfalvi and co-workers [23][24][25][26] and more recently Kim and co-workers, 27,28 have described a form of GD source wherein the plasma is operated at or near atmospheric pressure and the cathode takes the form of an electrolytic solution. [23][24][25][26] The source, termed an electrolyte-cathode discharge (ELCAD), was first described in the electrochemistry literature as a means of performing high yield electrolysis of aqueous solutions of metal salts. [29][30][31] The discharge is struck between a metal rod anode and an acidified (pH~1-3) aqueous solution containing the target analytes.…”