SUPERSONIC JET MULTIPHOTON IONIZATION MASS-SPECTROMETRY USING NANOSECOND AND FEMTOSECOND PULSE LASERS

Authors
MATSUMOTO J LIN CH IMASAKA T
Citation
J. Matsumoto et al., SUPERSONIC JET MULTIPHOTON IONIZATION MASS-SPECTROMETRY USING NANOSECOND AND FEMTOSECOND PULSE LASERS, Analytica chimica acta, 343(1-2), 1997, pp. 129-133
Citations number
16
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
343
Issue
1-2
Year of publication
1997
Pages
129 - 133
Database
ISI
SICI code
0003-2670(1997)343:1-2<129:SJMIMU>2.0.ZU;2-H
Abstract
The chemical species produced as a result of the thermal decomposition of polystyrene are multiphoton ionized by 500 fs and 15 ns laser puls es. Femtosecond laser ionization gave a more structured mass spectrum and a higher ionization efficiency. This is likely due to the fact tha t ionization occurs faster than intramolecular relaxation, e.g. photod ecomposition, under femtosecond laser pulses.