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Electron avalanche desorption: A new soft‐ionization technique for non‐volatile and/or thermally labile molecules
Author(s) -
Zubarev R. A.,
Bondarenko P. V.,
Knysh A. N.,
Rozynov B. V.
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.1290050109
Subject(s) - chemistry , desorption , ionization , electron ionization , mass spectrometry , ion , microchannel , field desorption , electron avalanche , ion source , mass spectrum , analytical chemistry (journal) , soft laser desorption , microchannel plate detector , molecule , electron multiplier , electron , chromatography , nanotechnology , organic chemistry , matrix assisted laser desorption/ionization , physics , adsorption , materials science , nuclear physics
A new ionization technique based on a modification of the conventional plasma‐desorption mass spectrometric apparatus is described. An electron avalanche produced by the microchannel plates of a secondary electron multiplier is found to desorb a sufficient amount of (quasi‐)molecular ions of non‐volatile thermally labile molecules. Spectra of several substances with molecular masses up to 1250 u are presented. The mechanism of electron avalanche desorption is now under investigation.