发明名称 |
Overcoming space charge effects in ion cyclotron resonance mass spectrometers |
摘要 |
In an ion cyclotron resonance mass spectrometer in which ions are trapped axially by applying electrical potentials to a pattern of electrode elements to produce an inhomogeneous alternating radio-frequency electric field with a repulsive effect, an additional electrostatic ion-attracting field is superimposed on the repulsive electric field. The voltage of the ion-attracting field is adjusted to compensate for a cyclotron frequency shift of the ions caused by the ion space charge. The voltage of the ion-attracting field can be adjusted so that the ion cyclotron frequency of all ions becomes independent of the number of ions inside the spectrometer.
|
申请公布号 |
US7615743(B2) |
申请公布日期 |
2009.11.10 |
申请号 |
US20070957613 |
申请日期 |
2007.12.17 |
申请人 |
BRUKER DALTONIK GMBH |
发明人 |
BAYKUT GOEKHAN;JERT ROLAND |
分类号 |
H01J49/26;B01D59/44;G06Q10/06 |
主分类号 |
H01J49/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|