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    • 5. 发明授权
    • Orientation independent ignitron with grooved cathode
    • 带凹槽阴极的方向独立点火器
    • US4970440A
    • 1990-11-13
    • US256673
    • 1988-10-12
    • Wilfried O. EckhardtHayden E. GallagherRoland G. Fleig
    • Wilfried O. EckhardtHayden E. GallagherRoland G. Fleig
    • H01J13/10H01J13/34H01J13/54
    • H01J13/10H01J13/34H01J13/54
    • An orientation independent ignitron (OII) has an anode, a cathode with a plurality of spaced grooves facing the anode, and a cooling mechanism which causes liquid metal vapor to condense as a film which is retained on the grooved cathode surface by surface tension and forms reservoirs within the grooves. The cathode and anode are preferably cylindrical and coaxial, with the inner surface of the cathode having parallel annular grooves facing the outer anode surface. Igniters are preferably introduced into convex areas between adjacent grooves along radial lines, with individual igniters providing ignition for a pair of adjacent grooves. The igniters can be operated simultaneously or in sequence, depending upon the desired repetition rate and current capacity. A liquid metal film is initially formed by placing the OII on its side, introducing liquid metal into the lower ends of the grooves, and causing arcing between the anode and liquid metal to flow the liquid metal and wet the adjacent groove surface. Some of the liquid metal also evaporates and re-condenses on other portions of the cathode, establishing a continuous film.
    • 取向独立的点火器(OII)具有阳极,具有面向阳极的多个间隔开的凹槽的阴极以及使液态金属蒸气冷凝的冷却机构,该薄膜通过表面张力保持在凹槽阴极表面上,并形成 凹槽内的储层。 阴极和阳极优选是圆柱形和同轴的,阴极的内表面具有面向外阳极表面的平行环形槽。 点火器优选地沿着径向线引入相邻凹槽之间的凸区域中,单独的点火器为一对相邻凹槽提供点火。 点火器可以同时或顺序运行,这取决于所需的重复率和电流容量。 最初通过将OII放置在其侧面上来形成液态金属膜,将液态金属引入槽的下端,并引起阳极和液态金属之间的电弧流动,使液体金属流动并润湿相邻的槽表面。 一些液体金属也在阴极的其它部分蒸发并重新凝结,建立连续的膜。