发明名称 |
ION SELECTION APPARATUS AND METHOD |
摘要 |
An ion mobility spectrometer or other ion apparatus has two or three grid electrodes 51 and 52; 151 to 153; 106 and 107; 106′ and 107′ extending laterally of the ion flowpath. An asymmetric waveform with a dc compensating voltage is applied between the electrodes to produce a field parallel to the ion flow path that affects ions differently according to their field-dependent mobility. This filters or delays different ions selectively in their passage to an ion detector 11, 111, 111′ to facilitate discrimination between ions that would otherwise produce a similar output. |
申请公布号 |
CA2635995(A1) |
申请公布日期 |
2007.07.19 |
申请号 |
CA20072635995 |
申请日期 |
2007.01.09 |
申请人 |
SMITHS DETECTION-WATFORD LIMITED |
发明人 |
GRANT, BRUCE ALEXANDER COLIN;ATKINSON, JONATHAN RICHARD;CLARK, ALASTAIR;TURNER, ROBERT BRIAN |
分类号 |
G01N27/64;H01J49/22 |
主分类号 |
G01N27/64 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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