4.5 Article

Hyperfine components of rovibrational dipole transitions in HT and DT

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2021.107662

Keywords

Hydrogen molecule; Hyperfine structure; Tritium

Funding

  1. National Science Centre in Poland [2019/35/B/ST2/01118]

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This study reports the positions and intensities of hyperfine components in the HT and DT isotopologues of molecular hydrogen. The results are crucial for interpreting accurate measurements of rovibrational transition frequencies and for tests of quantum electrodynamics for molecules.
We report a list of positions and intensities of 331 892 hyperfine components of all 18 585 rovibrational dipole transitions in the HT and DT isotopologues of molecular hydrogen. Apart from the study of hyperfine structure, we investigate the intensities of all rovibrational dipole transitions in the two isotopologues, which were not known prior to this work. The results presented here are crucial for a reliable interpretation of accurate measurements of rovibrational transition frequencies in the tritium bearing isotopologues of hydrogen, which are useful for tests of quantum electrodynamics for molecules and searches for new physics beyond the Standard Model. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ )

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