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The mass spectrum of mercury/cesium complex clusters (Hg) n Cs + ranging up to m / z = 118 000
Author(s) -
Sakurai T.,
Ito H.,
Matsuo T.,
Katakuse I.,
Costello C. E.
Publication year - 1991
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290051003
Subject(s) - chemistry , caesium , mass spectrum , cluster (spacecraft) , mercury (programming language) , metastability , atomic physics , ion , mass spectrometry , analytical chemistry (journal) , alkali metal , ionization , physics , inorganic chemistry , organic chemistry , chromatography , computer science , programming language
The mass spectrum of mercury/cesium complex clusters (Hg) n Cs + is observed up to m / z =118 000 (n = 590). Singly charged clusters are produced by Cs + ion bombardment. The presence of an alkali metal in the ionization process yields cluster ions of the form (Hg) n X + . The clusters are analysed using the grand‐scale mass spectrometer, GEMMY, at Osaka University. The mass resolution of the instrument is high enough to resolve each cluster up to m / z =70 000. From the pattern of cluster distribution, the structrues of the large clusters can be studied. The number of Hg groups in metastable decay increases with the cluster size n . The ion intensities of the mercury/cesium clusters are much stronger than that from CsI (used for mass calibration). The mass spectrum of the clusters can therefore easily be utilized for direct mass calibration up to m / z =70 000.