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http://hdl.handle.net/10362/117267
Título: | Observation of strong two-electron-one-photon transitions in few-electron ions |
Autor: | Togawa, M. Kühn, S. Shah, Chintan Amaro, Pedro Steinbrügge, René Stierhof, J. Hell, N. Rosner, Marieke Fujii, K. Bissinger, M. Ballhausen, R. Hoesch, M. Seltmann, J. Park, Sungnam Grilo, Filipe Porter, F. S. Santos, José Paulo Chung, M. Stöhlker, T. Wilms, J. Pfeifer, Thomas Brown, G. V. Leutenegger, M. A. Bernitt, Sven Crespo López-Urrutia, José R. |
Palavras-chave: | Atomic and Molecular Physics, and Optics |
Data: | 25-Nov-2020 |
Resumo: | We resonantly excite the K series of O5+ and O6+ up to principal quantum number n=11 with monochromatic x rays, producing K-shell holes, and observe their relaxation by soft-x-ray emission. Some photoabsorption resonances of O5+ reveal strong two-electron-one-photon (TEOP) transitions. We find that for the [(1s2s)15p3/2]3/2;1/2 states, TEOP relaxation is by far stronger than the radiative decay and competes with the usually much faster Auger decay path. This enhanced TEOP decay arises from a strong correlation with the near-degenerate upper states [(1s2p3/2)14s]3/2;1/2 of a Li-like satellite blend of the He-like Kα transition. Even in three-electron systems, TEOP transitions can play a dominant role, and the present results should guide further research on the ubiquitous and abundant many-electron ions where electronic energy degeneracies are far more common and configuration mixing is stronger. |
Descrição: | No. 05K13SJ2 Project No. 266229290 UID/FIS/04559/2020 NRF-2016R1A5A1013277 DE-AC52-07NA27344 |
Peer review: | yes |
URI: | http://hdl.handle.net/10362/117267 |
DOI: | https://doi.org/10.1103/PhysRevA.102.052831 |
ISSN: | 2469-9926 |
Aparece nas colecções: | Home collection (FCT) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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PhysRevA.102.052831.pdf | 1,04 MB | Adobe PDF | Ver/Abrir |
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