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Proceedings Paper

Initial spatial distribution of localized electrons under laser ionization of athracene in methylcyclohexane determined by the picosecond photo-assisted charge separation technique
Author(s): F. F. Brazgun; Victor A. Nadtochenko; Igor V. Rubtsov; L. V. Lukin
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Paper Abstract

The electron-ion pair recombination dynamics in solution of anthracene in methylcyclohexane was investigated by the picosecond photoassisted charge separation technique. The ion pairs was created by the two-photon ionization of anthracene using the 360 and 720 nm laser pulses. The delayed I.R. (1080 nm) pulse excited electrons after the U.V. pulse. The enhancement of photogenerated charge, (Delta) Q, due to additional action of the I.R. laser pulse was measured as a function of the delay time, td, between the U.V. and I.R. pulses. Decay kinetics (Delta) Q(td) observed was in agreement with the diffusion model of geminate recombination in which the initial spatial distribution of the electron-ion pair has Gaussian form f0(r) exp(-r2/B2) with B equals 3.5 +/- 0.5 and B equals 5.5 +/- 0.5 nm for the wavelength of U.V. light 360 and 270 nm respectively.

Paper Details

Date Published: 10 June 1996
PDF: 10 pages
Proc. SPIE 2802, Laser Chemistry, Biophysics, and Biomedicine, (10 June 1996); doi: 10.1117/12.242176
Show Author Affiliations
F. F. Brazgun, Institute of Chemical Physics/Chernogolovka (Russia)
Victor A. Nadtochenko, Institute of Chemical Physics/Chernogolovka (Russia)
Igor V. Rubtsov, Institute of Chemical Physics/Chernogolovka (Russia)
L. V. Lukin, Institute for Energy Problems of Chemical Physics (Russia)

Published in SPIE Proceedings Vol. 2802:
Laser Chemistry, Biophysics, and Biomedicine
Victor N. Zadkov, Editor(s)

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