J. Champion
Dec 1, 1958
Citations
0
Influential Citations
3
Citations
Journal
British Journal of Applied Physics
Abstract
Experiments are described in which the emission from thin films of barium and barium oxide deposited on titanium is compared with that from similar deposits on tungsten. With deposits of both barium and barium oxide the emission from titanium is very much less than that from tungsten throughout the temperature range investigated (700-1000? C). Above about 900? C the evaporation of titanium will poison the emission of an adjacent oxide cathode, but it is concluded that from 700? C up to this temperature titanium would possess good grid emission suppression properties. This could enable titanium to be used as a screen grid winding wire in the place of carbonized molybdenum wire in a number of receiving valves, and as an electrode material in other electronic devices where hot electrodes become contaminated with cathode material.