陰極

cathode

[目次：照射系(電子銃／高圧系)]

陽極に対抗する負電位の電極のこと。熱電子放出型電子銃のフィラメントや電界放出型電子銃のエミッタ（電子放射源）をさす。

An electrode, to which a negative potential (voltage) is applied against the facing anode. The "cathode" means the filament of the thermionic-emission electron gun or the emitter (electron source) of the field-emission electron gun.

関連用語から探す