发明名称 |
SELECTIVE ION MOBILITY SPECTROMETER |
摘要 |
Ions with a predetermined ion mobility range are produced by filtering ions entrained in a stream of moving gas with two ion mobility low pass filters located consecutively in the gas stream. Each filter is formed by applying a DC electric field to the gas stream which causes the ions to move in a direction opposite to the gas flow. Ions are collected between the two filters and transferred to a detector or analyzing device. In one embodiment, the maximum field strength of the electric field barrier in the first ion mobility low pass filter is continued as a plateau of essentially constant field strength up to the electric field barrier in the second ion mobility low pass filter, which has a maximum field strength higher that the maximum field strength of the electric field barrier in the first ion mobility low pass filter.
|
申请公布号 |
US2012286156(A1) |
申请公布日期 |
2012.11.15 |
申请号 |
US201213474009 |
申请日期 |
2012.05.17 |
申请人 |
PARK MELVIN ANDREW;KAPLAN DESMOND ALLEN;RIDGEWAY MARK;BRUKER DALTONIK GMBH |
发明人 |
PARK MELVIN ANDREW;KAPLAN DESMOND ALLEN;RIDGEWAY MARK |
分类号 |
H01J3/26;H01J49/26 |
主分类号 |
H01J3/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|