Characterization of aerosol plumes in nanosecond laser ablation of molecular solids at atmospheric pressure

Author(s) Schmitz, Thomas A., Koch, Joachim, Günther, Detlef, Zenobi, Renato
Publication Type Journal Items, Publication Status: Published
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Title Characterization of aerosol plumes in nanosecond laser ablation of molecular solids at atmospheric pressure
Author(s) Schmitz, Thomas A.
Koch, Joachim
Günther, Detlef
Zenobi, Renato
Journal or Series Title Applied physics. B, Lasers and optics
Volume Number 100
Issue Number 3
Start Page 521
End Page 533
ISSN 0946-2171
1432-0649
Publisher Springer
Publication Place Berlin
Publication Date 2010-09
Abstract Ablation of molecular solids with pulsed ultraviolet lasers at atmospheric pressure is an important process in (bio-)organic mass spectrometry. Of practical importance for analytical sampling and analysis are the plume formation and expansion. Plumes formed by atmospheric-pressure laser ablation of anthracene and 2,5-dihydroxybenzoic acid (2,5-DHB) were studied by light scattering imaging, which showed significant material release in the form of aerosols. The monitored plume expansion dynamics could be fitted to the drag-force model, yielding initial plume velocities of 150 m/s for anthracene and 43 m/s for DHB. While the angle of incidence does not affect the plume direction and propagation, a large dependence of the plume-expansion velocity on the laser pulse energy could be found, which is limited at atmospheric pressure by the onset of plasma shielding. With respect to analytical applications, the efficiency of sampling of the laser ablation products by a capillary could be experimentally visualized.
DOI 10.1007/s00340-010-4112-9
Additional Notes Received 26 August 2009, Revised 6 May 2010, Published online 3 July 2010
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03512
03430
Organisational Unit(s)
NEBIS System Number 000935514
Source Database ID WOS-000280842400012
SCOPUS-79952721031
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@article{Schmtz2010,
author = "Schmitz, Thomas A. and Koch, Joachim and G{\"{u}}nther, Detlef and Zenobi, Renato",
title = "{C}haracterization of aerosol plumes in nanosecond laser ablation of molecular solids at atmospheric pressure",
journal = "Applied physics. B, Lasers and optics",
year = 2010,
volume = "100",
number = "3",
pages = "521--533",
month = sep,
}


E-Citations record created: Mon, 30 Aug 2010, 09:16:31 CET