Investigation of the argon arc binding to the lanthanated tungsten cathode
Joint Institute for High Temperatures of the Russian Academy of Sciences - 13, bldg. 2 Izhorskaya str., Moscow, 125412, Russia
Received: 7 May 2015
Accepted: 21 July 2015
Pyrometric and spectroscopic investigations of lanthanated tungsten cathode in argon arc plasma discharge at atmospheric pressure are reported. The distribution of the surface cathode temperature was measured. Calculations and estimates of the emission current density are performed. Experimental data of the total current density are compared with the obtained results of estimation. The possible reasons for the discrepancy between the experimental and theoretical values of the total current were discussed.
PACS: 52.50.Nr – Plasma heating by DC fields; ohmic heating, arcs
© EPLA, 2015