发明名称 |
Method for fabrication of a quadrupole mass filter or quadrupole ion trap using electrode discharge machining |
摘要 |
A method for fabricating a quadrupole mass filter (QMF) or quadrupole ion trap (QIT) capable of generating a hyperbolic electric field. The method comprises: (a) cutting four elongate erodible metal workpieces axially at opposing extremities; (b) parallel mounting the four elongate erodible metal workpieces axially in an elongate slot in an insulating housing in a mutually spaced apart disposition such that an axial bore is formed therebetween whereby a first part of each elongate erodible metal workpiece is freely inward facing and the cutting forms a recess remote from the axis of the insulating housing; (c) electrically connecting the erodible metal workpieces; and (d) generating electrical discharges between the erodible metal workpiece and a wire electrode as the wire electrode passes through the axial bore to erode the erodible metal of the first part of the erodible metal workpiece to a hyperbolic profile. |
申请公布号 |
US8648276(B2) |
申请公布日期 |
2014.02.11 |
申请号 |
US200913062601 |
申请日期 |
2009.09.03 |
申请人 |
DUFFIN JASON;TAYLOR STEPHEN;ADVANCED SENSORS LTD. |
发明人 |
DUFFIN JASON;TAYLOR STEPHEN |
分类号 |
B23H9/00 |
主分类号 |
B23H9/00 |
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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