Invention Grant
US08921771B2 Corona discharge device and ion mobility spectrometer having corona discharge device
有权
具有电晕放电装置的电晕放电装置和离子迁移谱仪
- Patent Title: Corona discharge device and ion mobility spectrometer having corona discharge device
- Patent Title (中): 具有电晕放电装置的电晕放电装置和离子迁移谱仪
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Application No.: US14005820Application Date: 2012-11-29
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Publication No.: US08921771B2Publication Date: 2014-12-30
- Inventor: Zhiqiang Chen , Qingjun Zhang , Shuqiang Dong , Yuanjing Li , Ziran Zhao , Yinong Liu , Yan Zheng
- Applicant: Nuctech Company Limited , Tsinghua University
- Applicant Address: CN Beijing CN Beijing
- Assignee: Nuctech Company Limited,Tsinghua University
- Current Assignee: Nuctech Company Limited,Tsinghua University
- Current Assignee Address: CN Beijing CN Beijing
- Agency: Kinney & Lange, P.A.
- Priority: CN201110396845 20111202
- International Application: PCT/CN2012/085544 WO 20121129
- International Announcement: WO2013/079008 WO 20130606
- Main IPC: B01D59/44
- IPC: B01D59/44 ; H01J49/00 ; H01T19/04 ; H01J49/26

Abstract:
The present invention provides a corona discharge device, comprising a first electrode including: a first substantially cylindrical inner chamber portion and a second substantially conical inner chamber portion in communication with the first inner chamber portion, wherein the second inner chamber portion has a cross sectional area that gradually enlarges in a direction away from the first inner chamber portion. The present invention also provides an ion mobility spectrometer comprising: an ionization region; and the corona discharge device disposed in the ionization region. With the above construction and structure, the ion mobility spectrometer of the present invention has the advantages that extraction of ions is facilitated and a life time of the corona electrode is lengthened. In addition, the focusing and storing electrode is used to effectively shield interference of a corona discharge pulse, and to push and focus sample ions. A designed voltage control solution is used to achieve mobility differentiating of ions, while a corona pulse is shielded to prevent variation in an ion quantity due to the corona pulse, thereby achieving an effect of stabilizing mobility spectrum lines.
Public/Granted literature
- US20140299758A1 CORONA DISCHARGING DEVICE AND ION MIGRATION SPECTROMETER HAVING SAME Public/Granted day:2014-10-09
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