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Rebuilding the vibrational wavepacket in TRAS using attosecond X-ray pulses

Time-resolved X-ray photoelectron spectroscopy (TXPS) is a well-established technique to probe coherent nuclear wavepacket dynamics using both table-top and free-electron-based ultrafast X-ray lasers. Energy resolution, however, becomes compromised for a very short pulse duration in the sub-femtosec...

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Hauptverfasser: Wang, Chao (Verfasst von) , Gong, Maomao (Verfasst von) , Zhao, Xi (Verfasst von) , Nan, Quan Wei (Verfasst von) , Yu, Xin Yue (Verfasst von) , Cheng, Yongjun (Verfasst von) , Kimberg, Victor (Verfasst von) , Liu, Xiao-Jing (Verfasst von) , Vendrell, Oriol (Verfasst von) , Ueda, Kiyoshi (Verfasst von) , Zhang, Song Bin (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 02 January 2024
In: Communications Physics
Year: 2024, Jahrgang: 7, Heft: 1, Pages: 1-8
ISSN:2399-3650
DOI:10.1038/s42005-023-01507-3
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s42005-023-01507-3
Verlag, kostenfrei, Volltext: https://www.nature.com/articles/s42005-023-01507-3
Volltext
Verfasserangaben:Chao Wang, Maomao Gong, Xi Zhao, Quan Wei Nan, Xin Yue Yu, Yongjun Cheng, Victor Kimberg, Xiao-Jing Liu, Oriol Vendrell, Kiyoshi Ueda and Song Bin Zhang
Beschreibung
Zusammenfassung:Time-resolved X-ray photoelectron spectroscopy (TXPS) is a well-established technique to probe coherent nuclear wavepacket dynamics using both table-top and free-electron-based ultrafast X-ray lasers. Energy resolution, however, becomes compromised for a very short pulse duration in the sub-femtosecond range. By resonantly tuning the X-ray pulse to core-excited states undergoing Auger decay, this drawback of TXPS can be mitigated. While resonant Auger-electron spectroscopy (RAS) can recover the vibrational structures not hidden by broadband excitation, the full reconstruction of the wavepacket is a standing challenge. Here, we theoretically demonstrate how the complete information of a nuclear wavepacket, i.e., the populations and relative phases of the vibrational states constituting the wavepacket, can be retrieved from time-resolved RAS (TRAS) measurements. Thus, TRAS offers key insights into coupled nuclear and electronic dynamics in complex systems on ultrashort timescales, providing an alternative to leverage femtosecond and attosecond X-ray probe pulses.
Beschreibung:Published: 02 January 2024
Gesehen am 15.08.2024
Beschreibung:Online Resource
ISSN:2399-3650
DOI:10.1038/s42005-023-01507-3

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