State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China.
Anal Chem. 2021 Apr 20;93(15):5998-6002. doi: 10.1021/acs.analchem.1c00558. Epub 2021 Apr 8.
The ion trap is a unique type of device that is used for quantum studies in physics and mass analysis in chemistry. The space charge effect, which is due to trapping of an excessive number of ions, has long been recognized to be harmful for ion manipulation or mass spectrometry analysis. Here, we show an interesting phenomenon in which the energy exchange through collective interaction between the ion species could be effectively used for ion manipulation and high-quality mass measurement. This observation not only reveals a fundamentally interesting process in ion trap operation but also suggests a new alternative means for mass analysis.
离子阱是一种独特的设备，用于物理学中的量子研究和化学中的质量分析。空间电荷效应是由于捕获过多的离子而产生的，长期以来一直被认为对离子操纵或质谱分析有害。在这里，我们展示了一种有趣的现象，即通过离子种类之间的集体相互作用进行能量交换可以有效地用于离子操纵和高质量的质量测量。这一观察不仅揭示了离子阱操作中的一个有趣的基本过程，而且还为质量分析提供了一种新的替代手段。
