ELECTRODE FOR DISCHARGE LAMP, PROCESS FOR PRODUCTION OF ELECTRODE FOR DISCHARGE LAMP, AND DISCHARGE LAMP

摘要

An electrode for a discharge lamp, comprising an electrode capable of releasing a secondary electron and a mayenite compound provided on at least a part of the electrode, wherein the mayenite compound is burned in a vacuum atmosphere having an oxygen partial pressure of 10-3 Pa or less, an inert gas atmosphere having an oxygen partial pressure of 10-3 Pa or less, or a reductive atmosphere having an oxygen partial pressure of 10-3 Pa or less.