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Electron collisions with biomolecules

McKoy, Vincent and Winstead, Carl (2008) Electron collisions with biomolecules. Journal of Physics: Conference Series, 115 . Art. No. 012020. ISSN 1742-6596. doi:10.1088/1742-6596/115/1/012020.

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We report on results of recent studies of collisions of low-energy electrons with nucleobases and other DNA constituents. A particular focus of these studies has been the identification and characterization of resonances that play a role in electron attachment leading to strand breaks in DNA. Comparison of the calculated resonance positions with results of electron transmission measurements is quite encouraging. However, the higher-lying π* resonances of the nucleobases appear to be of mixed elastic and core-excited character. Such resonant channel coupling raises the interesting possibility that the higher π*resonances in the nucleobases may promote dissociation of DNA by providing doorway states to triplet excited states.

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Additional Information:© 2008 IOP Publishing Ltd. This research was supported by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy. We are grateful for the use of the resources of the Jet Propulsion Laboratory’s Supercomputing and Visualization Facility.
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Department of Energy (DOE)UNSPECIFIED
Subject Keywords:DNA; electron attachment; molecular biophysics; triplet state
Record Number:CaltechAUTHORS:20090504-073820697
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14135
Deposited By: Tony Diaz
Deposited On:13 Aug 2009 22:20
Last Modified:12 Jul 2022 19:44

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