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Collision‐induced decomposition of large organic ions and inorganic cluster ions. Effects of pressure on energy losses
Author(s) -
Bradley Caroline D.,
Derrick Peter J.
Publication year - 1993
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210280421
Subject(s) - ion , cluster (spacecraft) , atomic physics , caesium , transmission (telecommunications) , chemistry , decomposition , energy transfer , physics , inorganic chemistry , organic chemistry , computer science , electrical engineering , programming language , engineering
Translational energy losses Δ E in keV‐collisions have been determined for peptide ions and for caesium iodide cluster ions subsequently decomposing to specific fragment ions, and the dependences of these energies upon transmission have been investigated. Parent ions decomposing to certain fragment ions exhibit energy losses which are independent of transmission, while parent ions associated with other fragment ions show strong dependence of energy loss upon transmission. These findings are interpreted in terms of energy redistributions of tens of eV taking place in single collisions via direct momentum‐transfer.