发明名称 |
END CAP VOLTAGE CONTROL OF ION TRAPS |
摘要 |
<p>An ion trap for a mass spectrometer has a conductive central electrode with an aperture extending from a first open end to a second open end. A conductive first electrode end cap is disposed proximate to the first open end thereby forming a first intrinsic capacitance between the first end cap and the central electrode. A conductive second electrode end cap is disposed proximate to the second open end thereby forming a second intrinsic capacitance between the second end cap and the central electrode. A first circuit couples the second end cap to a reference potential. A signal source generating an AC trap signal is coupled to the central electrode. An excitation signal is impressed on the second end cap in response to a voltage division of the trap signal by the first intrinsic capacitance and the first circuit.</p> |
申请公布号 |
WO2009076444(A1) |
申请公布日期 |
2009.06.18 |
申请号 |
WO2008US86241 |
申请日期 |
2008.12.10 |
申请人 |
SPACEHAB, INC.;RAFFERTY, DAVID |
发明人 |
RAFFERTY, DAVID |
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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