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Argentero G, Mangler C, Kotakoski J, et al. Towards weighing individual atoms by high-angle scattering of electrons. Ultramicroscopy. 2014;151:23-30doi: 10.1016/j.ultramic.2014.11.031.
Argentero, G., Mangler, C., Kotakoski, J., Eder, F. R., & Meyer, J. C. (2015). Towards weighing individual atoms by high-angle scattering of electrons. Ultramicroscopy, 15123-30. https://doi.org/10.1016/j.ultramic.2014.11.031
Argentero, G, et al. "Towards weighing individual atoms by high-angle scattering of electrons." Ultramicroscopy vol. 151 (2015): 23-30. doi: https://doi.org/10.1016/j.ultramic.2014.11.031
Argentero G, Mangler C, Kotakoski J, Eder FR, Meyer JC. Towards weighing individual atoms by high-angle scattering of electrons. Ultramicroscopy. 2015 Apr;151:23-30. doi: 10.1016/j.ultramic.2014.11.031. Epub 2014 Dec 05. PMID: 25522869.
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Ultramicroscopy. 2015 Apr;151:23-30. doi: 10.1016/j.ultramic.2014.11.031. Epub 2014 Dec 05.

Towards weighing individual atoms by high-angle scattering of electrons.

Ultramicroscopy

G Argentero, C Mangler, J Kotakoski, F R Eder, J C Meyer

Affiliations

  1. University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Vienna, Austria.
  2. University of Vienna, Faculty of Physics, Boltzmanngasse 5, 1090 Vienna, Austria. Electronic address: [email protected].

PMID: 25522869 DOI: 10.1016/j.ultramic.2014.11.031

Abstract

We consider theoretically the energy loss of electrons scattered to high angles when assuming that the primary beam can be limited to a single atom. We discuss the possibility of identifying the isotopes of light elements and of extracting information about phonons in this signal. The energy loss is related to the mass of the much heavier nucleus, and is spread out due to atomic vibrations. Importantly, while the width of the broadening is much larger than the energy separation of isotopes, only the shift in the peak positions must be detected if the beam is limited to a single atom. We conclude that the experimental case will be challenging but is not excluded by the physical principles as far as considered here. Moreover, the initial experiments demonstrate that the separation of gold and carbon based on a signal that is related to their mass, rather than their atomic number.

Copyright © 2014 Elsevier B.V. All rights reserved.

Keywords: Electron Rutherford back scattering; Electron energy loss spectroscopy; Isotope identification; Scanning transmission electron microscopy

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