发明名称 |
TWO-DIMENSONAL RADIAL-EJECTION TRAP OPERABLE AS A QUADRUPOLE MASS FILTER |
摘要 |
A two-dimensional radial-ejection ion trap is constructed from four apertured electrodes having inwardly facing hyberbolic surfaces, with each electrode being spaced from the centerline by a distance r that is greater than the hyperbolic radius r0defined by the hyperbolic surfaces. This geometry produces a balanced symmetrical trapping field that has a negligible octopole field component and a relatively large dodecapole or icosapolar field component. In one specific implementation, the ion trap is selectably operable as a quadrupole mass filter by applying a filtering DC voltage to the electrodes. |
申请公布号 |
WO2010028081(A2) |
申请公布日期 |
2010.03.11 |
申请号 |
WO2009US55777 |
申请日期 |
2009.09.02 |
申请人 |
THERMO FINNIGAN LLC;SCHWARTZ, JAE, C. |
发明人 |
SCHWARTZ, JAE, C. |
分类号 |
H01J49/00 |
主分类号 |
H01J49/00 |
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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