The Application of Graphite as an Anode Material to High Vacuum Transmitting Tubes

Graphite has been found to possess a number of advantages over materials which have heretofore been used in the construction of anodes for high vacuum transmitting tubes of the radiation-cooled type. Graphite has a higher radiation emissivity, resulting in lower glass temperatures and therefore less danger of glass electrolysis and strain cracking. Its use avoids anode warping and therefore results in tubes of much greater electrical uniformity. With proper manufacturing methods, there is no sacrifice in tube life when graphite is substituted for molybdenum.