The electron affinity of astatine
Name
s41467-020-17599-2.pdf
Description
Published version
Size
1.72 MB
Format
Adobe PDF
Checksum (MD5)
8cf1badf8cf3bcb403d42f24949f3780
Author(s)
Garcia Ruiz, Ronald Fernando
Date Issued
2020
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Garcia Ruiz, Ronald Fernando. 2020. "The electron affinity of astatine." Nature Communications, 11 (1).
Version
Final published version
Abstract
© 2020, The Author(s). One of the most important properties influencing the chemical behavior of an element is the electron affinity (EA). Among the remaining elements with unknown EA is astatine, where one of its isotopes, 211At, is remarkably well suited for targeted radionuclide therapy of cancer. With the At− anion being involved in many aspects of current astatine labeling protocols, the knowledge of the electron affinity of this element is of prime importance. Here we report the measured value of the EA of astatine to be 2.41578(7) eV. This result is compared to state-of-the-art relativistic quantum mechanical calculations that incorporate both the Breit and the quantum electrodynamics (QED) corrections and the electron–electron correlation effects on the highest level that can be currently achieved for many-electron systems. The developed technique of laser-photodetachment spectroscopy of radioisotopes opens the path for future EA measurements of other radioelements such as polonium, and eventually super-heavy elements.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1038/S41467-020-17599-2
