This article has an erratum: [https://doi.org/10.1209/0295-5075/88/29901]
Volume 85, Number 1, January 2009
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||13 January 2009|
Radiation damage in biological material: Electronic properties and electron impact ionization in urea
Physik Department E17, Technische Universität München - James-Franck-Strasse, D-85748 Garching, Germany, EU
2 Department of Physics and Material Science, Uppsala University - Ångströmlaboratoriet, Box 530, SE-751 21 Uppsala, Sweden, EU
3 Department of Cell and Molecular Biology, Uppsala University - Biomedical Centre, Box 596, SE-751 24 Uppsala, Sweden, EU
4 Department of Engineering Sciences, Uppsala University - Ångströmlaboratoriet, Box 534, SE-751 21 Uppsala, Sweden, EU
Corresponding author: email@example.com
Accepted: 25 November 2008
Radiation damage is an unavoidable process when performing structural investigations of biological macromolecules with X-rays. In crystallography this process can be limited through damage distribution in a crystal, while for single molecular imaging it can be outrun by employing short intense pulses. Secondary electron generation is crucial during damage formation and we present a study of urea, as model for biomaterial. From first principles we calculate the band structure and energy loss function, and subsequently the inelastic electron cross-section in urea. Using Molecular Dynamics simulations, we quantify the damage and study the magnitude and spatial extent of the electron cloud coming from an incident electron, as well as the dependence with initial energy.
PACS: 87.15.A- – Biomolecules: structure and physical properties: Theory, modeling, and computer simulation / 71.20.Rv – Electron density of states and band structure of crystalline solids: Polymers and organic compounds / 79.20.Hx – Electron and ion emission by liquids and solids; impact phenomena: Electron impact: secondary emission
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.