Abstract:
A discharge device for operation in a gas at a prescribed pressure includes a cathode having a plurality of micro hollows therein, and an anode spaced from the cathode. Each of the micro hollows has dimensions selected to produce a micro hollow discharge at the prescribed pressure. Preferably, each of the micro hollows has a cross-sectional dimension that is on the order of the mean free path of electrons in the gas. Electrical energy is coupled to the cathode and the anode at a voltage and current for producing micro hollow discharges in each of the micro hollows in the cathode. The discharge device may include a discharge chamber for maintaining the prescribed pressure. A dielectric layer may be disposed on the cathode when the spacing between the cathode and the anode is greater than about the mean free path of electrons in the gas. Applications of the discharge device include fluorescent lamps, excimer lamps, flat fluorescent light sources, miniature gas lasers, electron sources and ion sources.
Abstract:
An ion generator for the generation of a plasma is assembled from module subassemblies. The first subassembly includes a dielectric plate 1, on the first surface 1a of which are located a large number of first electrodes 3, and the second surface 1b of which is coated with a structured conductive layer 2. The second subassembly includes an aperatured spacer plate with a large number of dielectric spacers with a second electrode 5 on the side facing away from the dielectric plate 1. In joining the subassemblies together, the aperatured spacer plate is connected to the dielectric plate 1 at its first surface 1a in such a way that cavities 6 for accommodating plasma are formed by the first electrodes 3, parts of the first surface 1a of the dielectric plate 1 and the spacers 4 with the second electrodes 5. The first set of electrodes 3 shield the points where the subassemblies are bonded together from plasma in the cavities.
Abstract:
A discharge device for operation in a gas at a prescribed pressure includes a cathode having a plurality of micro hollows therein, and an anode spaced from the cathode. Each of the micro hollows has dimensions selected to produce a micro hollow discharge at the prescribed pressure. Preferably, each of the micro hollows has a cross-sectional dimension that is on the order of the mean free path of electrons in the gas. Electrical energy is coupled to the cathode and the anode at a voltage and current for producing micro hollow discharges in each of the micro hollows in the cathode. The discharge device may include a discharge chamber for maintaining the prescribed pressure. A dielectric layer may be disposed on the cathode when the spacing between the cathode and the anode is greater than about the mean free path of electrons in the gas. Applications of the discharge device include fluorescent lamps, excimer lamps, flat fluorescent light sources, miniature gas lasers, electron sources and ion sources.
Abstract:
An electron beam and collective ion-electron beam accelerating apparatus inhich a relativistic electron beam and ions moving with it are accelerated in speed by passing them through a converging waveguide (i.e., a drift tube) of gradually decreasing diameter. The ions are separated from the electrons upon leaving the waveguide.
Abstract in simplified Chinese:一离子源丝极夹具有一具有第一及第二端部的夹构件。该第一端部具有一凸轮表面以及一凸轮从动件中的一个,以及具有彼此相对且被一开槽分隔开的第一及第二部分,该开槽具有一被界定于其中的导线开口,用以容置一离子源丝极的一导线。一致动器销件沿着一致动器销件轴线延伸,且具有第一及第二区段。该第一区段被链接至该夹构件的该第一部分。该致动器销件延伸贯穿一在该夹构件的该第二部分中的贯穿孔,且系以滑动的方式与之啮合。一凸轮构件系被操作式地链接至该致动器销件的该第二区段。该凸轮构件具有一握柄以及该凸轮表面及该凸轮从动件中的另一个,且被配置成旋转于一夹紧位置及一松开位置之间。该凸轮从动件滑动式地接触该凸轮表面。在该夹紧位置中,该凸轮从动件以一第一预定的方式啮合该凸轮表面,因而选择性地压挤该夹构件的该等第一及第二部分朝向彼此,并施加一夹持压力于在该导线开口中的该导在线,同时引发一介于该夹构件的该等第一及第二部分之间的弹性张力。在该松开位置中,该凸轮从动件以一第二预定的方式啮合该凸轮表面,其中,该弹性张力将该夹构件的该等第一及第二部分彼此分开地扩张,于其中释放开于在该导线开口中的该导在线面的该夹持压力。
Abstract in simplified Chinese:本发明揭露可减速点状离子束或带状离子束之减速设备。本发明可控制会破坏离子束轮廓之效应。本发明可用遮罩来屏蔽离子束以减少外部电位的影响。本发明也可用位于离子束相对侧并可调整位置与电位之多数个电极,确保减速与偏转电场的形状不会显着偏离最佳形状,即使是具有显着空间电荷且由重离子组成的高电流低能量离子束。