发明名称 |
Double-focusing mass spectrometer having Wien filter and MS/MS instrument using such spectrometer |
摘要 |
A double-focusing mass spectrometer comprising a Wien filter and a homogeneous magnetic field. Daughter ions produced from parent ions of a certain ionic species differ in mass but have velocities substantially equal to that of the parent ions. The Wien filter is set up such that the velocities of the daughter ions satisfy the Wien condition. Thus, the daughter ions originated from the specified parent ions pass through the filter and are dispersed according to mass by the homogeneous magnetic field and focused into a focal plane. A two-dimensional ion detector is disposed along this focal plane in order to simultaneously detect said daughter ions and to obtain a spectrum of the daughter ions.
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申请公布号 |
US4866267(A) |
申请公布日期 |
1989.09.12 |
申请号 |
US19880180305 |
申请日期 |
1988.04.12 |
申请人 |
JEOL LTD. |
发明人 |
MATSUDA, HISASHI;NAITO, MOTOHIRO |
分类号 |
G01N27/62;H01J49/28;H01J49/32 |
主分类号 |
G01N27/62 |
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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