Single and double Auger decays from highly-excited vibrational sublevels in core-ionized N2 molecules

Single and double Auger decays from vibrationally excited core-ionized N2 molecules are studied using multielectron coincidence spectroscopy. The high vibrational sublevels (ν ≥ 5) of the core-hole state are populated via autoionization following core-valence double excitation. The features of the A...

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Bibliographic Details
Published in:Journal of electron spectroscopy and related phenomena 2022-08, Vol.259, p.147244, Article 147244
Main Authors: Kaneyasu, Tatsuo, Odagiri, Takeshi, Tanaka, Hirokazu, Adachi, Jun-ichi, Hikosaka, Yasumasa
Format: Article
Language:English
Subjects:
Auger decay
Nitrogen
Photoelectron-Auger electron coincidence spectroscopy
Synchrotron
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Summary:Single and double Auger decays from vibrationally excited core-ionized N2 molecules are studied using multielectron coincidence spectroscopy. The high vibrational sublevels (ν ≥ 5) of the core-hole state are populated via autoionization following core-valence double excitation. The features of the Auger spectra vary significantly as the initial vibrational excitation increases, which reflects the vibrational wave functions in the core-hole state and the repulsive potential energy curves for Auger final states. •A combination use of the efficient multielectron spectroscopy and the pulsed synchrotron light.•Single and double Auger decays from vibrationally excited core-ionized N2 molecules are studied.•The Auger structures appear to broaden with increasing initial vibrational excitation.
ISSN:0368-2048
1873-2526
DOI:10.1016/j.elspec.2022.147244