Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.1021/acs.jpclett.3c01347

Аннотация: Resonant Auger scattering (RAS) provides information on the core-valence electronic transition and impresses a rich fingerprint of the electronic structure and nuclear configuration at the time-initiating RAS process. Here, we suggest using a femtosecond X-ray pulse to trigger RAS in a distorted molecule, which is generated from thПоказать полностьюe nuclear evolution on a valence excited state pumped by a femtosecond ultraviolet pulse. With the time delay varied, the amount of molecular distortion can be controlled and the RAS measurements imprint both their electronic structures and changing geometries. This strategy is showcased in H2O prepared in an O-H dissociative valence state, where molecular and fragment lines appear in RAS spectra as signatures of ultrafast dissociation. Given the generality of this approach for a broad class of molecules, this work opens a new alternative pump-probe technique for mapping the core and valence dynamics with ultrashort X-ray probe pulses.

Журнал: Journal of Physical Chemistry Letters

Выпуск журнала: Т. 14, № 24

Номера страниц: 5475-5480

ISSN журнала: 19487185

• Wang Chao (School of Physics and Information Technology, Shaanxi Normal University, Xi’an, Shaanxi 710119, People’s Republic of China)
• Gong Maomao (School of Physics and Information Technology, Shaanxi Normal University, Xi’an, Shaanxi 710119, People’s Republic of China)
• Cheng Yongjun (School of Physics and Information Technology, Shaanxi Normal University, Xi’an, Shaanxi 710119, People’s Republic of China)
• Kimberg Victor (Theoretical Chemistry and Biology, Royal Institute of Technology, 10691 Stockholm, Sweden)
• Liu Xiao-Jing (School Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People’s Republic of China)
• Vendrell Oriol (Theoretical Chemistry, Institute of Physical Chemistry, Heidelberg University, 69120 Heidelberg, Germany)
• Ueda Kiyoshi (Department of Chemistry, Tohoku University, Sendai 980-8578, Japan)
• Zhang Song Bin (School of Physics and Information Technology, Shaanxi Normal University, Xi’an, Shaanxi 710119, People’s Republic of China)

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