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Feasibility study of internal conversion electron spectroscopy of 229mTh

  • Benedict Seiferle
  • Lars von der Wense
  • Peter G. Thirolf
Open Access
Regular Article - Experimental Physics

Abstract.

With an expected energy of 7.8(5) eV, the isomeric first excited state in 229Th exhibits the lowest excitation energy of all known nuclei. Until today, a value for the excitation energy has been inferred only by indirect measurements. In this paper we propose an experimental method that is potentially capable of measuring the ground-state transition energy via the detection of the internal conversion electrons. MatLab-based Monte Carlo simulations have been performed to obtain an estimate of the expected statistics and to test the feasibility and the expected precision of the experiment. From the simulations we conclude that with the presented methods an energy determination with a precision of better than 0.1 eV is within reach.

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Copyright information

© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Authors and Affiliations

  • Benedict Seiferle
    • 1
  • Lars von der Wense
    • 1
  • Peter G. Thirolf
    • 1
  1. 1.Ludwig-Maximilians-Universität MünchenGarchingGermany

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