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Ionization of large molecules with short laser pulses


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Title: Ionization of large molecules with short laser pulses
Authors: Kjellberg, Mikael
E-mail: mikael.kjellberg@physics.gu.se
Issue Date: 24-Mar-2010
University: Göteborgs universitet. Naturvetenskapliga fakulteten
Institution: Department of Physics ; Institutionen för fysik
Parts of work: I. Momentum-map-imaging photoelectron spectroscopy of fullerenes with femtosecond laser pulses. M. Kjellberg, O. Johansson, F. Jonsson, A. V. Bulgakov, C. Bordas, E. E. B. Campbell and K. Hansen, Phys. Rev. A, 81, 023202 (2010).
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II. Femtosecond electron spectroscopy of coronene, benzo[GHI]perylene and anthracene. M. Kjellberg, A. V. Bulgakov, M. Goto, O. Johansson and K. Hansen (2010). Unpublished.

III. Molecular fusion within fullerene clusters induced by femtosecond laser excitation. M. Hedén, M. Kjellberg, A. V. Bulgakov, K. Hansen and E. E. B. Campbell. Eur. Phys. D, 43, 255 (2007).
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IV. Competition between fission and intra-cluster fusion in highly excited fullerene clusters. K. Hansen, M. Kjellberg, A. V. Bulgakov and E. E. B. Campbell. Israel J. Chem., 47, 43, (2007).
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V. Ionisation of fullerenes and fullerene clusters using ultrashort laser pulses. E. E. B. Campbell, K. Hansen, M. Hedén, M. Kjellberg and A. V. Bulgakov. Photochem. Photobiol. Sci., 5, 1183, (2006).
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Date of Defence: 2010-03-26
Disputation: Fredagen den 26 mars 2010, kl. 10.00, Kollektorn, MC2, Kemivägen 9".
Degree: Doctor of Philosophy
Publication type: Doctoral thesis
Keywords: Fysik
Photoelectron spectroscopy, Momentum mapping imaging, thermal ionization, above threshold ionization, molecular fusion, fullerenes, polyaromatic hydrocarbons, femtosecond-laser.
Abstract: The decay dynamics of fullerenes and polyaromatic hydrocarbons (PAH) after femtosecond-laser excitation have been studied experimentally by electron momentum mapping and mass spectrometry. The electron spectra of fullerenes and large PAH-molecules were found to be exponentially decreasing with energy without any distinct peaks outside the photon energy. This is interpreted as a statistical electron emission from a transient hot, highly excited, electron system where vibrations are still co... more
ISBN: 978-91-628-8032-3
URI: http://hdl.handle.net/2077/21696
Appears in Collections:Doctoral Theses / Doktorsavhandlingar Institutionen för fysik
Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet

 

 

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