专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明申请

WO1997039473A1 DEVICE AND METHOD FOR DETECTION OF PARTICLES 审中-公开
标题翻译：用于检测颗粒的装置和方法
公开(公告)号：WO1997039473A1
公开(公告)日：1997-10-23
申请号：PCT/SE1997000643
申请日：1997-04-16
申请人： LUNDIN, Richard , LAUCHE, Hans
IPC分类号： H01J43/04
CPC分类号： H01J43/04 , H01J43/24
摘要： The present invention relates to a particle and photon detector and to a method for application in such detection. The detector includes a body having a beam-incident surface (8) capable of releasing secondary electrons in numbers proportional to the number of particles incident on said surface, and a plurality of secondary electron multiplier channels whose inlet openings are disposed in the beam-incident surface, therewith to amplify the number of secondary electrons. A centre channel (2) extends from the beam-incident surface (8) through the detector body and enables a beam of particles or photons to pass through the body. The inlet openings of the secondary electron multipliers (4) are conveniently disposed in the beam-incident surface in a ring around the centre channel (2) for receiving secondary electrons. The inventive method applied in the detection of charged particles, such as ions and electrons, in a beam that contains charged and charge-free particles comprises the steps of subjecting the charged particles to the effect of an electric field so as to collect the charged particles in an outer tubular layer which surrounds the residual beam of charge-free particles, such as to form two mutually coaxial beams, wherein the outer tubular particle beam is captured by a plurality of secondary electron multipliers and wherein signals delivered by the electron multiplier are read-off.
摘要翻译：本发明涉及一种粒子和光子检测器及其应用于这种检测的方法。检测器包括具有能够释放与入射在所述表面上的粒子数目成比例的数量的二次电子的光束入射表面（8）的主体，以及多个二次电子倍增器通道，其入口开口设置在光束入射表面，从而放大二次电子的数量。中心通道（2）从光束入射表面（8）延伸穿过检测器主体并且使得一束粒子或光子能够穿过身体。二次电子倍增器（4）的入口开口方便地设置在围绕中心通道（2）的环中的束入射表面中，用于接收二次电子。在包含带电和无电荷粒子的光束中用于检测带电粒子（例如离子和电子）的本发明的方法包括以下步骤：使带电粒子受到电场的影响，以便收集带电粒子在外部管状层中，其围绕剩余的无电荷粒子束，例如形成两个相互同轴的光束，其中外部管状粒子束被多个二次电子倍增器捕获，并且其中读取由电子倍增器传递的信号 -off。

IPRDB

热门服务

关于我们

友情链接

联系方式