Cathode member and electron tube having the cathode member mounted thereon.

摘要

With a production of a cathode member for an electron tube having cathode materials containing Ni, a metal having a reduction behavior and an electron emissive agent sintered to be one body and its electron emitting surface subjected to a specular processing, it is possible to obtain an inexpensive cathode characterized by that: the operation temperature is low; the electron emission distribution is excellent because of the smooth electron emitting surface; and the electron emission is enabled with a high current density for a long interval of time. <IMAGE>