Core-excited states of SF6 probed with soft-x-ray femtosecond transient absorption of vibrational wave packets
In: Physical Review A, Jg. 108 (2023-07-01), Heft 1
Online
academicJournal
- 012805
A vibrational wavepacket in Formula Presented is created by impulsive stimulated Raman scattering with a few-cycle infrared pulse and mapped simultaneously onto five sulfur core-excited states using table-top soft x-ray transient absorption spectroscopy between 170 to 200 eV. The femtosecond vibrations induce real-time energy shifts of the x-ray absorption, whose amplitude depend strongly on the nature of the core-excited state. The pump laser intensity is used to control the number of vibrational states in the superposition, thereby accessing core-excited levels for various extensions of the S-F stretching motion. This enables the determination of the relative core-level potential energy gradients for the symmetric stretching mode, in good agreement with TDDFT calculations. This experiment demonstrates a new means of characterizing core-excited potential energy curves.
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Core-excited states of SF6 probed with soft-x-ray femtosecond transient absorption of vibrational wave packets
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Autor/in / Beteiligte Person: | Barreau, Lou ; Ross, Andrew D ; Kimberg, Victor ; Krasnov, Pavel ; Blinov, Svyatoslav ; Neumark, Daniel M ; Leone, Stephen R |
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Zeitschrift: | Physical Review A, Jg. 108 (2023-07-01), Heft 1 |
Veröffentlichung: | eScholarship, University of California, 2023 |
Medientyp: | academicJournal |
Umfang: | 012805 |
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