发明申请
- 专利标题： Electrode structure for drift tube in ion mobility spectrometer
- 专利标题（中）： 离子迁移谱仪中漂移管的电极结构
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申请号： US12455029申请日： 2009-05-27
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公开(公告)号： US20090309013A1公开(公告)日： 2009-12-17
- 发明人: Zhiqiang Chen , Yuanjing Li , Hua Peng , Qingjun Zhang , Jin Lin , Shaoji Mao , Zhude Dai , Shiping Cao , Zhongxia Zhang , Yangtian Zhang , Dexu Lin , Qinghua Wang , Shaofeng Wang , Hui Li
- 申请人： Zhiqiang Chen , Yuanjing Li , Hua Peng , Qingjun Zhang , Jin Lin , Shaoji Mao , Zhude Dai , Shiping Cao , Zhongxia Zhang , Yangtian Zhang , Dexu Lin , Qinghua Wang , Shaofeng Wang , Hui Li
- 申请人地址： CN Beijing CN Beijing
- 专利权人： Nuctech Company Limited,Tsinghua University
- 当前专利权人： Nuctech Company Limited,Tsinghua University
- 当前专利权人地址： CN Beijing CN Beijing
- 优先权： CN2008101148161 20080612
- 主分类号： H01J49/00
- IPC分类号： H01J49/00
摘要：
Disclosed is an electrode structure for a drift tube in IMS comprising a ring electrode, for each of two surfaces of the ring electrode, at least a part adjacent to the inner radius is formed into a cone, and the angles formed between the cones and the axis of the ring electrode are different from each other. The electrode structure of the present invention can alleviate, even eliminate, the accumulation of space charges in the drift tube. Such structure is particularly suitable when the electric field in the drift tube is low in strength or a great number of ions pass through. Meanwhile, the structure allows a significant decrease in the size of the outer radius of the electrode, while the inner radius remains constant. In this way, it is possible to effectively reduce the outline size of the drift tube and thus make the IMS compact.
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