Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
Anal Chem. 2011 Oct 15;83(20):7895-901. doi: 10.1021/ac201790d. Epub 2011 Sep 27.
We present a novel, hybrid ion trap/time-of-flight mass spectrometer that is based on a planar multipole design. Compared with Paul trap/time-of-flight instruments, this design possesses the principal advantages of higher injection efficiency and more homogeneous extraction fields. We demonstrate the viability of the concept and describe the characterization of a first prototype. Ions can be injected into the trap with little mass discrimination and stored for several minutes. A resolution of over 1300 is achieved in reflectron mode, and the influence of the RF amplitude and pressure on the resolution is analyzed. We suggest several applications in which this new instrument could offer advantages over existing technology.
我们提出了一种新型的混合离子阱/飞行时间质谱仪，它基于平面多极设计。与 Paul 阱/飞行时间仪器相比，这种设计具有更高的注入效率和更均匀的提取场的主要优点。我们展示了该概念的可行性，并描述了第一个原型的特性。可以以几乎没有质量歧视的方式将离子注入阱中，并存储数分钟。在反射模式下可实现超过 1300 的分辨率，并分析了 RF 幅度和压力对分辨率的影响。我们提出了几种新仪器可以提供优于现有技术的应用。
