Ultrafast laser time-of-flight mass analysis of laser-desorbed atoms and molecules

Autor:	R. P. Singhal, L. Robson, S. M. Hankin, E. J. Divall, T. McCanny, Paraskevas Tzallas, K. W. D. Ledingham, A. J. Langley, A. D. Tasker, P. F. Taday, Constantine Kosmidis
Rok vydání:	2001
Předmět:	Chemistry Analytical chemistry Physics::Optics Laser Mass spectrometry Soft laser desorption law.invention Condensed Matter::Materials Science law Ionization Femtosecond Physics::Atomic and Molecular Clusters Mass spectrum Physics::Atomic Physics Time-of-flight mass spectrometry Electron ionization
Zdroj:	AIP Conference Proceedings.
ISSN:	0094-243X
DOI:	10.1063/1.1405577
Popis:	Femtosecond time-of-fight mass spectra of laser-desorbed gallium arsenide (GaAs) and trinitrobenzene (TNT) reveal the characteristic features and differences of femtosecond atomic and molecular ionization. Significant yields of multiply-charged atomic fragments, parent molecular ions and structure-specific fragment ions of labile molecules have been obtained. An optimum desorption laser intensity for the transfer of neutral intact parent molecules in to the gas phase has been observed to be molecule-dependent. This work demonstrates the potential of ultrafast laser ionization and has significant implications for analytical and environmental studies of solid materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6434dd88e584e4d94ab11c2095ec24a7 https://doi.org/10.1063/1.1405577 Zobrazit plný text záznamu