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FTMS studies of mass-selected, large cluster ions produced by direct laser vaporization

✍ Scribed by Stephen W McElvany; H.H Nelson; Andrew P Baronavski; Clifford H Watson; John R Eyler

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 600 KB
Volume: 134
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)87124-5

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✦ Synopsis

A method is described for the production of large cluster ions by direct laser vaporization in a low-pressure FTMS. Production of high-mass carbon cluster ions (C,' ; 40 < n < 180) and bismuth-antimony (Bi,Sb,? ) cluster ions containing up to five metal atoms are reported. The observed distributions are compared with those obtained previously by both direct laser vaporization and molecular beam sources. Details of the mechanism for formation of these larger cluster ions by direct laser vaporization are discussed. The mass selectivity and long ion residence times obtainable in the FIMS may now be utilized in the study of these cluster ions. Results are presented from a limited study of the ion/molecule reactions and collision induced dissociation of the high-mass carbon cluster ions.

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