EROSION OF A COPPER CATHODE IN A NONSTATIONARY ARC SPOT. 
II. DETERMINATION OF THE ENERGY PARAMETERS OF THE ARC SPOT 
BY THE THERMOPHYSICAL METHOD

L. I. Sharakhovskii,a A. M. Esipchuk,a , b
and A. Marottab

UDC 621.387.143.014.31

The results of investigation of the energy parameters 
of a nonstationary electric-arc spot on a copper cathode in an air 
atmosphere have been presented. The data published earlier on the 
thermal volt-equivalent of the cathode arc spot have been generalized. 
A nonlinear dependence of the current density on the magnetic field 
has been obtained. A comparison of the new results and those obtained 
earlier on other setups and their generalization have been made.

aA. V. Luikov Heat and Mass Transfer Institute, 
National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 
220072, Belarus; email: leonidsh@tut.by; 
bGleb Wataghin Institute of Physics, Campinas State University, Campinas, 
Brazil (Instituto de Fisica "Gleb Wataghin", Universidade Estadual 
de Campinas, Campinas, Sao Paulo, Brasil); email: 
aruy@ifi.unicamp.br. Translated from Inzhenerno-Fizicheskii Zhurnal, 
Vol. 77, No. 2, pp. 112-117, March-April, 2004. Original article 
submitted October 13, 2003.