Laser-induced micron size clustering in thiophenol vapor

Positively charged micron sized clusters are efficiently produced following irradiation of thiophenol vapor at 248 nm by a single KrF laser pulse of 30 ns duration. The production mechanism has been studied by examining the effect of N2, Ar, and He as diffusion media in mixtures with thiophenol, and...

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Veröffentlicht in:The Journal of chemical physics 1993-03, Vol.98 (6), p.5079-5086
Hauptverfasser: ZAFIROPULOS, V, KOLLIA, Z, FOTAKIS, C, STOCKDALE, J. A. D
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container_end_page 5086
container_issue 6
container_start_page 5079
container_title The Journal of chemical physics
container_volume 98
creator ZAFIROPULOS, V
KOLLIA, Z
FOTAKIS, C
STOCKDALE, J. A. D
description Positively charged micron sized clusters are efficiently produced following irradiation of thiophenol vapor at 248 nm by a single KrF laser pulse of 30 ns duration. The production mechanism has been studied by examining the effect of N2, Ar, and He as diffusion media in mixtures with thiophenol, and by varying the laser pulse energy and excitation wavelength. A qualitative summary of possible mechanisms that may be responsible for the experimental results is presented providing a framework for understanding the observed cluster growth. The measurements indicate an optimum set of parameters for growth of large clusters and also show that the cluster charge can be controlled by selection of the buffer gas mixture.
doi_str_mv 10.1063/1.464963
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The production mechanism has been studied by examining the effect of N2, Ar, and He as diffusion media in mixtures with thiophenol, and by varying the laser pulse energy and excitation wavelength. A qualitative summary of possible mechanisms that may be responsible for the experimental results is presented providing a framework for understanding the observed cluster growth. The measurements indicate an optimum set of parameters for growth of large clusters and also show that the cluster charge can be controlled by selection of the buffer gas mixture.</abstract><cop>Woodbury, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.464963</doi><tpages>8</tpages></addata></record>
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ispartof The Journal of chemical physics, 1993-03, Vol.98 (6), p.5079-5086
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source AIP Digital Archive
subjects ARGON
Atomic and molecular clusters
Atomic and molecular physics
BINARY MIXTURES
BUFFERS
CATIONS
CHARGED PARTICLES
DIFFUSION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
Exact sciences and technology
EXCIMER LASERS
FLUIDS
GAS LASERS
GASES
HELIUM
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
ION PAIRS
IONS
LASER RADIATION
LASERS
MIXTURES
NITROGEN
NONMETALS
NUCLEATION
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHYSICAL RADIATION EFFECTS
Physics
PRODUCTION
PULSES
RADIATION EFFECTS
RADIATIONS
RARE GASES 400500 -- Photochemistry
Studies of special atoms, molecules and their ions
clusters
THIOPHENOLS
VAPORS
title Laser-induced micron size clustering in thiophenol vapor
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