Abstract
Ionizing interactions between charged particles and molecules of biological relevance have attracted considerable interest in the last decade due to its importance in medical radiation therapy. We have previously calculated triply differential cross sections for five biomolecules in collaboration with experimental groups. We used the molecular 3-body distorted wave approximation for these calculations. For ionization of biomolecules, experimentalists are unable to determine the orientation of the molecule at the time of ionization, which means that the calculated cross sections need to be averaged over all molecular orientations. At the time the calculations were performed, it was not numerically feasible for us to perform proper averaging over orientations, so we introduced the orientation averaged molecular orbital approximation to make the calculations possible. We now have the computational capability to properly perform this average, so, here, we present new results with a proper average over orientations and compare with the previous calculations and experiment. Since the original calculations, results from two different distorted-wave models have also been published and the new results will also be compared with those calculations. Overall, the new results are in better agreement with the experiment.
Recommended Citation
E. Ali et al., "Improved Theoretical Calculations for Electron-impact Ionization of DNA Analogue Molecules," Journal of Chemical Physics, vol. 152, no. 12, article no. 124303, American Institute of Physics, Mar 2020.
The definitive version is available at https://doi.org/10.1063/1.5143148
Department(s)
Physics
Publication Status
Available Access
International Standard Serial Number (ISSN)
0021-9606
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Physics, All rights reserved.
Publication Date
31 Mar 2020
PubMed ID
32241131
Comments
National Science Foundation, Grant 1806206