发明授权
US5739530A Method and device for the introduction of ions into quadrupole ion traps
失效
用于将离子引入四极离子阱的方法和装置
- 专利标题: Method and device for the introduction of ions into quadrupole ion traps
- 专利标题(中): 用于将离子引入四极离子阱的方法和装置
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申请号: US656581申请日: 1996-05-31
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公开(公告)号: US5739530A公开(公告)日: 1998-04-14
- 发明人: Jochen Franzen , Reemt-Holger Gabling , Yang Wang
- 申请人: Jochen Franzen , Reemt-Holger Gabling , Yang Wang
- 申请人地址: DEX Bremen
- 专利权人: Bruker-Franzen Analytik GmbH
- 当前专利权人: Bruker-Franzen Analytik GmbH
- 当前专利权人地址: DEX Bremen
- 优先权: DEX19520319.4 19950602
- 主分类号: H01J49/04
- IPC分类号: H01J49/04 ; H01J49/42 ; B01D59/44 ; H01J49/00
摘要:
The invention relates to methods and devices for the effective introduction of ions, which are stored in an RF ion guide into a quadrupole ion trap. The invention consists of arranging a switchable ion lens between the RF ion guide and the quadrupole ion trap, and introducing the ions into the quadrupole ion trap by a suitable connection of the ion lens only during the filling period, while otherwise the ions are reflected back into the RF ion guide. The filling period can be divided up and limited to the capture intervals of the quadrupole ion trap during each RF period. Measurement of the filling rate can be made by switching open the ion lens longer then the admission interval of the quadrupole ion trap, and measuring the flow of the ions passing through on the detector.
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