发明名称 |
CORRECTING PHASES FOR ION POLARITY IN ION TRAP MASS SPECTROMETRY |
摘要 |
In a method and apparatus for adjusting a composite electric field to be applied to an ion trap to accommodate switching the operation of the ion trap between a positive ion mode and a negative ion mode, the composite electric field includes a plurality of component fields including at least one AC trapping field and one or more supplemental AC fields. A phase of one or more of the component fields is adjusted such that a force imparted by the composite field to a negative ion in the ion trap will be substantially the same as the force imparted by the composite field to a positive ion in the ion trap.
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申请公布号 |
WO2006081075(A8) |
申请公布日期 |
2006.10.19 |
申请号 |
WO2006US01062 |
申请日期 |
2006.01.12 |
申请人 |
VARIAN INC.;MARQUETTE, EDWARD, G. |
发明人 |
MARQUETTE, EDWARD, G. |
分类号 |
H01J49/12 |
主分类号 |
H01J49/12 |
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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