Large ion volume time‐of‐flight mass spectrometer with position‐ and velocity‐sensitive detection capabilities for cluster beams
Large ion volume time‐of‐flight mass spectrometer with position‐ and velocity‐sensitive detection capabilities for cluster beams
复制标题
大离子体积飞行时间质谱仪，具有位置和速度敏感的簇束检测功能
DOI：
10.1063/1.1142066
复制
发表时间：
1991
影响因子：
1.6
通讯作者：
P. Milani
中科院分区：
文献类型：
--
作者：
W. Heer;P. Milani
我们已经开发并测试了一种高性能的飞行时间质谱仪，用于分子束中的团簇。已经实现了对传统设计的几个重要改进，包括大的电离体积、完善的离子操纵系统和大面积有效的离子检测器。在200-cm 3离子体积内产生的团簇离子可以在1至约10 000 amu的尺寸范围内以约1000的分辨率同时检测。质谱仪还可以在位置敏感模式下操作以进行团簇束偏转测量，并在速度敏感模式下操作以确定团簇速度。用Al和Fe团簇证明了谱仪的性能。我们提出了团簇束的质谱和速度，以及磁和电偏转测量准直铁和铝团簇束。
We have developed and tested a high‐performance time‐of‐flight mass spectrometer for clusters in a molecular beam. Several important improvements over conventional designs have been implemented that include a large ionization volume, a perfected ion steering system and a large area efficient ion detector. Cluster ions that are produced within the 200‐cm3 ion volume can be simultaneously detected over a size range of from 1 to about 10 000 amu with a resolution of about 1000. The mass spectrometer can also be operated in a position‐sensitive mode for cluster beam deflection measurements, and in a velocity‐sensitive mode to determine the cluster velocities. The performance of the spectrometer is demonstrated with Al and Fe clusters. We present mass spectra of cluster beams and also velocity, and magnetic and electric deflection measurements of collimated iron and aluminum cluster beams.