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1. 发明授权

US06380685B2 Design and manufacturing processes of long-life hollow cathode assemblies 失效
标题翻译：长寿命空心阴极组件的设计和制造工艺
公开(公告)号：US06380685B2
公开(公告)日：2002-04-30
申请号：US09754388
申请日：2000-12-28
申请人： Michael J. Patterson , Timothy R. Verhey , George C. Soulas
发明人： Michael J. Patterson , Timothy R. Verhey , George C. Soulas
IPC分类号： B07B312
CPC分类号： H01J37/32596 , H01J1/025
摘要： The design and manufacturing processes for Hollow Cathode Assemblies (HCA's) that operate over a broad range of emission currents up to 30 Amperes, at low potentials, with lifetimes in excess of 17,500 hours. The processes include contamination control procedures which cover hollow cathode component cleaning procedures, gas feed system designs and specifications, and hollow cathode activation and operating procedures to thereby produce cathode assemblies that have demonstrated stable and repeatable operating conditions, for both the discharge current and voltage. The HCA of this invention provides lifetimes of greater than 10,000 hours, and expected lifetimes of greater than 17,500 hours, whereas the present state-of-the-art is less than 500 hours at emission currents in excess of 1 Ampere. Stable operation is provided over a large range of operating emission currents, up to a 6:1 ratio, and this HCA can emit electron currents of up to 30 Amperes in magnitude to an external anode that simulates the current drawn to a space plasma, at voltages of less than 20 Volts.
摘要翻译：空心阴极组件（HCA）的设计和制造过程，其工作范围广泛，发射电流高达30安培，电位低，寿命超过17,500小时。这些方法包括污染控制程序，其涵盖空心阴极部件清洁程序，气体供给系统设计和规范，以及中空阴极活化和操作程序，从而产生对于放电电流和电压都已经证明稳定和可重复的操作条件的阴极组件。本发明的HCA提供的寿命大于10,000小时，预期寿命大于17,500小时，而现有技术在超过1安培的发射电流下小于500小时。在大范围的工作发射电流下提供稳定的操作，高达6：1的比例，并且该HCA能够向外部阳极发射高达30安培的电子电流，该外部阳极模拟吸入空间等离子体的电流，电压小于20伏。

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