| 摘要 |
<p>A discharge tube includes a pair of electrode devices (4) mounted within a discharge tube body (1) in an opposed relation to each other, each of the pair of electrode devices (4) including an arc discharge electrode and a glow discharge electrode. An electron-radiating substance vaporized and emitted in a scattered manner from the arc discharge electrode is captured by the glow discharge electrode. The arc discharge electrode is composed of a sintered body containing the electron-radiating substance therein. <IMAGE></p> |
