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C Nanoparticles. Laser desorption ionization to produce heavy cations. Laser surface interaction for the generation of carbonaceous heavy cations and nanoparticles and their gas phase studies.

Alsayed Ali, Mohamed Ali (2010) C Nanoparticles. Laser desorption ionization to produce heavy cations. Laser surface interaction for the generation of carbonaceous heavy cations and nanoparticles and their gas phase studies. LAMBERT. ISBN 978-3-8433-7521-4

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Official URL: https://www.morebooks.de/store/gb/book/c-nanoparti...

Abstract

Polycyclic Aromatic Hydrocarbons (PAHs) are important chemical species in combustion processes, energy, environment, health and industry. In this work, the recombination of the azulene, acenaphthene, anthracene, and pyrene PAHs ions with electrons is studied with the FlaPI (Flowing Afterglow with Photo Ions) method. The ionic species in the flowing afterglow are spatially characterized by a MS and the electron concentration is measured by means of a movable Langmuir probe. A new method L2DI (laser desorption / laser ionization) combined with the FlaPI methods developed for studying the recombination kinetics of much larger PAHs. The PAH ions concentration decay in time in function of the presence of electrons is measured. Different methods for recovering the recombination rate coefficient are assessed. A CRESU reactor is used to produce nanoparticles of PAH molecules at low temperature, which are deposited onto chosen surfaces. The samples were then analyzed ex-situ by AFM (Atomic Force Microscopy) in tapping mode. This method of characterization was tested previously by analyzing small soot particles generated by a diffusion flame and deposited onto mica surfaces.

Item Type:Book
Subjects:Physical Science > Nanophysics
Analytical Science > Microscopy and probe methods
Technology > Nanotechnology and environmental applications
Technology > Nanotechnology and energy applications
Engineering > Nanotechnology applications in aeronautics & astronautics
Risk > Environment, health and safety aspects of nanotechnology
Material Science > Nanochemistry
ID Code:10457
Deposited By:Dr Mohamed Ali Alsayed Ali
Deposited On:05 Jan 2011 14:36
Last Modified:05 Jan 2011 14:36

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