Method for manufacturing alkali metal generating agent, alkali metal generator, photoelectric surface, secondary electron emission surface, electron tube, the photoelectric surface, a method of manufacturing an electronic tube and method of manufacturing the secondary electron emission surface

摘要

This invention relates to alkali metal generating agent or the like to form a secondary electron emitting surface or the photocathode can be generated stably alkali metal. The alkali metal generating agent (1) is used to form the secondary-electron emitting surface for emitting secondary electrons in response to incident electrons or photocathode emits photoelectrons in response to incident light. In particular, the alkali metal generating agent (1), including at least an oxidizing agent consisting of a vanadium salt of one, and a reducing agent for reducing the ions of at least a counter cation of alkali metal ions. Oxidizing force is weaker than the chromate vanadate redox reaction with a reducing agent proceeds slowly as compared with the case of the chromate, control of the reaction rate is easy.