The recent interest in comparing carbon and graphite electrodes has resulted in contributions by Mellichamp and Finnegan (1,2) and Allsopp and Shaw (3). Connor and Bass (4) have added carbon and graphite powder to the discussion and have considered high voltage a.c. arc excitation. Carbon has been compared with graphite in other situations using the d.c. arc. At times the differences in the behavior of carbon and graphite are appreciable.
D. C. Spindler, "D.C. Arc Analysis. Some Effects of Replacing Graphite with Carbon," Appl. Spectrosc. 15, 20-21 (1961)