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Laser‐pulse ejection of organic molecules from a matrix: Lessons from fast‐ion‐induced ejection
Author(s) -
Johnson R. E.,
Sundqvist B. U. R.,
Ens W.
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.1290051116
Subject(s) - sputtering , chemistry , ion , laser , excitation , atomic physics , biomolecule , pulse (music) , molecule , yield (engineering) , desorption , matrix (chemical analysis) , analytical chemistry (journal) , nanotechnology , thin film , optics , materials science , organic chemistry , physics , chromatography , biochemistry , adsorption , quantum mechanics , detector , metallurgy
Lessons learned from electronic sputtering by incident ions of condensed‐gas solids and solids composed of biomolecules are applied to laser‐pulse‐induced ejection of biomolecules inbedded in a matrix of small molecules. In electronic sputtering by fast ions, single excitation desorption, thermally activated sputtering, and pressure‐pulse sputtering have been observed. In addition, yields for ejected ions have been shown to exhibit trends different from yields for ejected neutrals. The parallel processes are considered for laser‐pulse ejection of a martix with imbedded molecules and expressions are given to examine the yield data.