Hashimoto Yuichiro, Hasegawa Hideki, Baba Takashi, Waki Izumi
Central Research Laboratory, Hitachi, Ld., Tokyo, Japan.
J Am Soc Mass Spectrom. 2006 May;17(5):685-90. doi: 10.1016/j.jasms.2006.01.011. Epub 2006 Mar 9.
We describe a new mass selective ejection method from a linear ion trap, which we call axial resonant excitation (AREX). A set of vane lenses are inserted between each quadrupole rod to produce electrostatic potential that is approximately harmonic along the central axis of the quadrupole field. After ions with specific m/z are resonantly oscillated in the axial direction, the ions are mass selectively ejected in the axial direction. At a high scan rate of 11 Th/ms, AREX achieved a high ejection efficiency of more than 60%, which is more than three times higher than a conventional mass selective axial ejection method from a linear trap using fringing field.
我们描述了一种来自线性离子阱的新型质量选择性喷射方法，我们称之为轴向共振激发（AREX）。在每个四极杆之间插入一组叶片透镜，以产生沿四极场中心轴近似为谐波的静电势。具有特定质荷比的离子在轴向共振振荡后，在轴向被质量选择性地喷射出去。在11 Th/ms的高扫描速率下，AREX实现了超过60%的高喷射效率，这比使用边缘场的传统线性阱质量选择性轴向喷射方法高出三倍以上。
