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    • 2. 发明授权
    • Linear aperture pseudospark switch
    • 线性孔径伪线开关
    • US6104022A
    • 2000-08-15
    • US890485
    • 1997-07-09
    • Christopher M. YoungWilliam R. Cravey
    • Christopher M. YoungWilliam R. Cravey
    • H01J17/40H01J40/14
    • H01J17/40
    • The present invention is of a glow discharge switch operating in the low pressure regime where gas breakdown is limited by the distance between electron-gas particle collisions (pseudospark discharge). The invention utilizes linear discharge apertures (length greater than width) in the electrodes. The linear apertures provide significantly higher current conduction without discharge constriction than conventional round-hole pseudospark switches. A radial version of the linear pseudospark switch also is disclosed that provides for self-canceling of the magnetic fields induced by the discharge, and thus prevents discharge constriction and provides for very high current conduction.
    • 本发明是一种在低压状态下操作的辉光放电开关,其中气体击穿受到电子 - 气体颗粒碰撞之间的距离(假静电放电)的限制。 本发明利用电极中的线性放电孔(长度大于宽度)。 线性孔径比传统的圆孔伪脉冲开关提供明显更高的电流传导而没有放电收缩。 还公开了一种径向版本的线性伪脉冲开关,其提供了由放电感应的磁场的自消除,从而防止放电收缩并提供非常高的电流传导。
    • 6. 发明授权
    • Coaxial pseudospark discharge switch
    • 同轴伪线放电开关
    • US5126638A
    • 1992-06-30
    • US699476
    • 1991-05-13
    • Rolf Dethlefsen
    • Rolf Dethlefsen
    • H01J17/04H01J17/40H01T2/02
    • H01J17/40H01J17/04H01T2/02
    • A high power pseudospark switch (40) utilizes a coaxial cylindrical electrode geometry to provide a large number of pseudospark discharge channels (60) in a compact space. The coaxial cylindrical electrode geometry includes a hollow cylindrical anode (52) inside of a larger hollow cylindrical cathode (54). A plurality of radially aligned holes (57, 59) are equally spaced around the perimeter of both the hollow anode and cathode, thereby forming an annular pseudospark discharge (PSD) channel about the coaxial center axis. A plurality of such PSD channels (56, 58) are then stacked along the length of the coaxial cylindrical electrode geometry. A single trigger pulser (48) aligned with the center axis of the cylindrical electrodes provides a way for simultaneously triggering a discharge in each PSD channel. An outer switch housing, divided into two electrically-insulated portions (47, 49) surrounds the coaxial cylindrical electrodes and provides a structural support for the electrodes as well as an electrical contact with the electrodes. A non-conductive seal (43) positioned between the respective housing portions maintains electrical isolation between the respective electrodes, and further allows a specified gas to be maintained within the switch housing at a prescribed pressure, thereby promoting operation of the device on the left side of the Paschen curve.
    • 高功率伪脉冲开关(40)利用同轴圆柱形电极几何形状在紧凑的空间中提供大量的伪脉冲放电通道(60)。 同轴圆柱形电极几何形状包括在较大的中空圆柱形阴极(54)内部的中空圆柱形阳极(52)。 多个径向排列的孔(57,59)围绕中空阳极和阴极的周边等间隔开,从而围绕同轴中心轴线形成环形假游离放电(PSD)通道。 然后沿着同轴圆柱形电极几何形状的长度堆叠多个这样的PSD通道(56,58)。 与圆柱形电极的中心轴对准的单个触发脉冲发生器(48)提供了一种同时触发每个PSD通道中的放电的方式。 外部开关壳体被分成两个电绝缘部分(47,49)围绕同轴圆柱形电极,并为电极提供结构支撑以及与电极的电接触。 位于相应的壳体部分之间的非导电密封件(43)保持各个电极之间的电绝缘,并且还允许在规定压力下将特定气体保持在开关壳体内,从而促进装置在左侧的操作 的Paschen曲线。
    • 7. 发明授权
    • Acoustic enhancement of multichannel spark gap
    • 多通道火花隙的声学增强
    • US4963799A
    • 1990-10-16
    • US311688
    • 1989-02-16
    • James P. O'Loughlin
    • James P. O'Loughlin
    • H01J17/30H01J17/40H01T2/02
    • H01J17/40H01J17/30H01T2/02
    • A spark gap system is disclosed that includes an enclosure which contains a gas medium; two rail electrodes which extend into the enclosure and which are separated from each other by the gas medium, a trigger blade which ionizes the gas medium to cause it to be a conductor between the two electrodes through a series of electrical arc channels in the gas medium, and an acoustic driver which generates a standing acoustic wave in the gas medium. The standing acoustic wave generates a pressure density profile that distributes the electrical arc channels along the wave nodes of the standing acoustic wave. This has the result of evenly distributing the electrical arc channels along the first and second rail electrodes when the gas medium is ionized, and improving the spark gap system performance.
    • 公开了一种火花隙系统,其包括包含气体介质的外壳; 两个轨道电极,其延伸到外壳中并且由气体介质彼此分离;触发器叶片,其通过气体介质中的一系列电弧通道离子化气体介质以使其成为两个电极之间的导体 以及在气体介质中产生驻声波的声学驱动器。 驻波产生压力密度分布,沿着声波的波节分布电弧通道。 这导致了气体介质离子化时沿着第一和第二轨道电极均匀分布电弧通道,并且提高了火花隙系统性能。
    • 8. 发明授权
    • Plasma X-ray tube, in particular for X-ray preionization of gas lasers
and method for produicng X-radiation with such an X-ray tube
    • 等离子X射线管,特别是用于气体激光器的X射线预电离和用这种X射线管产生X射线的方法
    • US4955045A
    • 1990-09-04
    • US335700
    • 1989-04-10
    • Dirk FriedeHans-Juergen CirkelRudolf BaumgartlMatthias Schmutzler
    • Dirk FriedeHans-Juergen CirkelRudolf BaumgartlMatthias Schmutzler
    • H01J35/22H01J3/02H01J17/40H01J33/00H01J37/075H01J37/077H01S3/09H01S3/0971H05G2/00
    • H01S3/09716H01J17/40H01J3/025H01J33/00H01J35/06H01J35/08H01J2235/186
    • A plasma X-ray tube with high electron current densities includes a plasma chamber formed of a metal hollow cathode having an outer limiting wall with an X-ray target and a mutually spaced apart and opposed inner limiting wall with at least one metal acceleration grid being highly transparent to electron and ion radiation and being in alignment with the X-ray target defining a path. At least one ignition electrode in the form of a thin wire protrudes into the plasma chamber at positive potential relative to the hollow cathode. At least one anode retained in an insulated and gas-tight manner in one of the side walls of the hollow cathode is disposed laterally of the alignment of the target and grid and at positive potential relative to the hollow cathode. An acceleration chamber adjoins and communicates with the plasma chamber through the acceleration grid. The acceleration chamber is surrounded by metal walls in electrical and gas-tight connection with the limiting walls of the hollow cathode. An acceleration cathode is at high negative potential relative to the acceleration grid. The acceleration cathode has a shaft and a head in alignment with the path and spaced apart from the acceleration grid. The shaft of the acceleration cathode is retained in an insulating gas-tight duct in a wall facing the acceleration grid.
    • 具有高电子密度的等离子体X射线管包括由金属空心阴极形成的等离子体室,该等离子体室具有带有X射线靶的外部限制壁和相互间隔开的相对的内部限制壁,至少一个金属加速栅是 对电子和离子辐射具有高度透明度并且与限定路径的X射线靶对准。 至少一个呈细线形式的点火电极相对于中空阴极以正电位突出到等离子体室中。 在中空阴极的一个侧壁中以绝缘和气密方式保持的至少一个阳极设置在靶和栅格的对准侧面并且相对于空心阴极处于正电位。 加速室通过加速栅格与等离子体室相连接。 加速室由与空心阴极的限制壁电气和气密连接的金属壁包围。 加速阴极相对于加速栅格处于高负电位。 加速阴极具有与路径对准并且与加速栅格间隔开的轴和头部。 加速阴极的轴保持在面向加速度格栅的壁中的绝缘气密管道中。