| 摘要 |
<p>A case member (12) composed of an insulating material has openings at both ends. An airtight envelope (16) is formed by hermetically sealing the both end openings of the case member (12) with a pair of cover members (14, 14) which also serve as discharge electrodes. A certain discharge gap (22) is formed between discharge electrode portions (18, 18) of the cover members (14, 14). A plurality of linear trigger discharge films (28) are formed on the inner wall surface (24) of the case member (12) in such a way that both ends of the films face the cover members (14, 14) with very small discharge gaps (26) intervening therebetween. An insulating coating film (30) containing an alkali iodide is formed on the surface of each discharge electrode portion (18). A discharge tube (10) is formed by filling the airtight envelope (16) with a discharge gas containing Kr (krypton). ® KIPO & WIPO 2007</p> |
