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2. 发明公开

EP0592186A1 Cathode for photoelectric emission, cathode for secondary electron emission, electron multiplier tube, and photomultiplier tube 失效
标题翻译： Photoelektrische Kathode，sekundärelektronenemitierenden Kathode，Elektronenvielfacherröhre，undPhotovervielfacherröhre。
公开(公告)号：EP0592186A1
公开(公告)日：1994-04-13
申请号：EP93307896.6
申请日：1993-10-05
申请人： HAMAMATSU PHOTONICS K.K.
发明人： Watase, Yasushi, c/o Hamamatsu Photonics K.K. , Kinoshita, Masao, c/o Hamamatsu Photonics K.K. , Watanabe, Hiroyuki, c/o Hamamatsu Photonics K.K. , Hashimoto, Takeo, c/o Hamamatsu Photonics K.K. , Iida, Takehiro, c/o Hamamatsu Photonics K.K. , Washiyama, Hiroaki, c/o Hamamatsu Photonics K.K.
IPC分类号： H01J1/34 , H01J1/32
CPC分类号： H01J1/35
摘要： A cathode for photoelectric emission or a cathode for secondary electron emission comprises a thin film made of a material which emits photoelectrons (4) by an incident light (3) or emits secondary electrons by an electron input on a base substrate and of which an average particle size is 200 nm to 2000 nm. It is preferred that the average particle size is nearly equal to an average diffusion length of the particle of excited electron. Further, the average particle size is preferably larger than the mean value of penetration lengths of inputted electrons or incident lights in the particles. Moreover, preferably convexities and/or concavities formed of particles each having the average particle size are formed on all over the surface of a plane of input for the light or electron. Further, it is preferred that the thin film is activated by an alkali metal and is made of compounds of at least one kind of an alkali metals and an antimony metal. Moreover, it is preferred that a layer having high reflectance against lights is inserted between the base substrate and the thin film. Thus, according to the cathode for photoelectric emission or the cathode for secondary electron emission, photoelectrons or secondary electrons are generated effectively and emitted from the cathode for photoelectric emission or the cathode for secondary electron emission.
摘要翻译：用于光电发射的阴极或用于二次电子发射的阴极包括由通过入射光（3）发射光电子（4）或通过基底衬底上的电子输入发射二次电子的材料制成的薄膜，并且其平均粒径为200nm〜2000nm。优选平均粒径几乎等于被激发电子的粒子的平均扩散长度。此外，平均粒径优选大于粒子中输入的电子或入射光的穿透长度的平均值。此外，优选地，在用于光或电子的输入平面的整个表面上形成具有平均粒径的颗粒形成的凸起和/或凹部。此外，优选薄膜由碱金属活化，并且由至少一种碱金属和锑金属的化合物制成。此外，优选地，在基底基板和薄膜之间插入具有高光反射率的层。因此，根据用于光电发射的阴极或用于二次电子发射的阴极，有效地产生光电子或二次电子并从用于光电发射的阴极或用于二次电子发射的阴极发射。

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