ELECTRIC DISCHARGE ELECTRODE, DISCHARGE LAMP, AND METHOD OF DISCARDING DISCHARGE LAMP

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PROBLEM TO BE SOLVED : To provide an electric discharge electrode and a discharge lamp using the electric discharge electrode improving efficiency and a service life while reducing the applied amount of rare metal and metallic materials whose load on global environment is being regarded as a problem. SOLUTION : The electric discharge electrode has a sealing tube 9 sealing electric discharge gas, a conductive base material 1 formed of a carbon-based material and passing through the sealing tube 9 from the outside of the sealing tube 9 to extend into the sealing tube 9, and a diamond crystal layer 5 formed on the surface of the conductive base material 1 located inside the sealing tube 9.