发明名称 |
MULTI-REFLECTION MASS SPECTROMETER |
摘要 |
A multi-reflection mass spectrometer comprising two ion-optical mirrors, each mirror elongated generally along a drift direction (Y), each mirror opposing the other in an X direction and having a space therebetween, the X direction being orthogonal to Y; the mass spectrometer further comprising one or more compensation electrodes each electrode being located in or adjacent the space extending between the opposing mirrors; the compensation electrodes being configured and electrically biased in use so as to produce, in at least a portion of the space extending between the mirrors, an electrical potential offset which: (i) varies as a function of the distance along the drift length, and/or; (ii) has a different extent in the X direction as a function of the distance along the drift length. In a preferred embodiment the period of ion oscillation between the mirrors is not substantially constant along the whole of the drift length. |
申请公布号 |
US2015028198(A1) |
申请公布日期 |
2015.01.29 |
申请号 |
US201314374221 |
申请日期 |
2013.01.22 |
申请人 |
Thermo Fisher Scientific (Bremen) GmbH |
发明人 |
Grinfeld Dmitry;Makarov Alexander |
分类号 |
H01J49/40;H01J49/42;H01J49/00 |
主分类号 |
H01J49/40 |
代理机构 |
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代理人 |
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主权项 |
1. A multi-reflection mass spectrometer comprising two ion-optical mirrors, each mirror elongated generally along a drift direction (Y), each mirror opposing the other in an X direction and having a space therebetween, the X direction being orthogonal to Y;
the mass spectrometer further comprising one or more compensation electrodes each electrode being located in or adjacent the space extending between the opposing mirrors; the compensation electrodes being configured and electrically biased in use so as to produce, in at least a portion of the space extending between the mirrors, an electrical potential offset which: (i) varies as a function of the distance along the drift length, and/or; (ii) has a different extent in the X direction as a function of the distance along the drift length. |
地址 |
Bremen DE |