Abstract
A highly charged ion causes ultrastrong electric fields at the location of a close-by target molecule. As a response to those fields, several electrons are removed from the molecule on a very short time-scale. In the subsequent fragmentation process, ions with kinetic energies of a few hundred electron volts are produced. We investigated the interaction of 0.5 MeV Xe25+ with the nucleobases uracil and thymine by means of coincidence time-of-flight spectrometry. Our measurements clearly show that fragment kinetic energies reflect the molecular geometry and contain information on the fragmentation pathways. (C) 2004 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 173-179 |
Number of pages | 7 |
Journal | International Journal of Mass Spectrometry |
Volume | 233 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 15-Apr-2004 |
Keywords
- nucleobases
- highly charged ions
- time-of-flight spectrometry
- COULOMB EXPLOSION
- ELECTRON-ATTACHMENT
- DNA BASES
- EXCITATION
- THERAPY
- THYMINE
- IONS