发明名称 |
METHOD OF TRAPPING IONS IN AN ION TRAPPING DEVICE |
摘要 |
A quadrupole ion trapping device has a ring electrode (11) and two end-cap electrodes (12, 13). Ions are introduced into a trapping region (15) of the ion trapping device via a hole (14) in a first of the end-cap electrodes (12) and are retarded by application of a DC retarding voltage to the second of the end-cap electrodes (13). The retarding voltage is removed when the retarted ions are about to change their direction of motion towards the first end-cap electrode (12), and an ion trapping field is established by applying a radio frequency voltage to the ring electrode (11) when the ions are inside the ion trapping device.
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申请公布号 |
WO9939370(A1) |
申请公布日期 |
1999.08.05 |
申请号 |
WO1999GB00083 |
申请日期 |
1999.01.12 |
申请人 |
SHIMADZU RESEARCH LABORATORY (EUROPE) LTD.;KAWATO, EIZO;SMITH, ALAN, JOSEPH |
发明人 |
KAWATO, EIZO;SMITH, ALAN, JOSEPH |
分类号 |
H01J49/42;(IPC1-7):H01J49/42 |
主分类号 |
H01J49/42 |
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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