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    • 5. 发明申请
    • DEVICE FOR PRODUCING AN ELECTRON BEAM
    • 用于生产电子束的装置
    • US20130162134A1
    • 2013-06-27
    • US13821887
    • 2011-09-08
    • Goesta MattauschPeter FeinaeugleVolker KirchhoffDieter WeiskeHenrik FlaskeRainer Zeibe
    • Goesta MattauschPeter FeinaeugleVolker KirchhoffDieter WeiskeHenrik FlaskeRainer Zeibe
    • H01J29/56H01J29/00
    • H01J37/075H01J3/025H01J37/077H01J2237/3104H01J2237/3128H01J2237/3132
    • The invention relates to a device for producing an electron beam, comprising a housing (12), which delimits a space (13) that can be evacuated and has an electron beam outlet opening; an inlet (16) for feeding a process gas into the space (13) that can be evacuated; a planar cathode (14) and an anode (15), which are arranged in the space (13) that can be evacuated and between which a glow-discharge plasma can be produced by means of an applied electrical voltage, wherein ions can be accelerated from the glow-discharge plasma onto the surface of the cathode (14). The cathode has a first part (14a) made of a first material, which forms a centrally arranged first surface region of the cathode (14), and a second part (14b) made of a second material, which forms a second surface region of the cathode (14) that encloses the first surface region. The first material can be heated by the impingement with accelerated ions to a temperature at which electrons escape the first material predominantly due to thermionic emission.
    • 本发明涉及一种用于制造电子束的装置,包括:外壳(12),其限定可抽真空并具有电子束出口的空间(13); 用于将处理气体进料到可以抽空的空间(13)中的入口(16); 平面阴极(14)和阳极(15),其布置在可以抽真空的空间(13)中,并且可以通过施加的电压产生辉光放电等离子体,其中可以加速离子 从辉光放电等离子体到阴极(14)的表面。 阴极具有由第一材料制成的第一部分(14a),其形成阴极(14)的居中布置的第一表面区域和由第二材料制成的第二部分(14b),第二部分形成第二表面区域 封闭第一表面区域的阴极(14)。 主要由于热离子发射,第一种材料可以通过加速离子的冲击加热至电子逸出第一种材料的温度。