Core-excited states of SF${}_6$ probed with soft X-ray femtosecond transient absorption of vibrational wavepackets

Abstract

A vibrational wavepacket in SF${}_6$, created by impulsive stimulated Raman scattering with a few-cycle infrared pulse, is mapped onto five sulfur core-excited states using table-top soft X-ray transient absorption spectroscopy between 170-200 eV. The amplitudes of the X-ray energy shifts of the femtosecond oscillations depend strongly on the nature of the state. The prepared wavepacket is controlled with the pump laser intensity to probe the core-excited levels for various extensions of the S-F stretching motion. This allows the determination of the relative core-level potential energy gradients, in good agreement with TDDFT calculations. This experiment demonstrates a new means of characterizing core-excited potential energy surfaces.

References in corpus (7)

• Multi-channel Electronic and Vibrational Dynamics in Polyatomic High-order Harmonic Generation
• Efficient table-top dual-wavelength beamline for ultrafast transient absorption spectroscopy in the soft X-ray region
• Coherent electronic-vibrational dynamics in deuterium bromide probed via attosecond transient absorption spectroscopy
• Source noise suppression in attosecond transient absorption spectroscopy by edge-pixel referencing
• Jahn-Teller Distortion and Dissociation of CCl${}_4^{+}$ by Transient X-ray Spectroscopy Simultaneously at the Carbon K- and Chlorine L-Edge
• Attosecond XUV probing of vibronic quantum superpositions in Br${}_2^{+}$
• Transient grating spectroscopy of SF6 molecular vibrations

Cited by in corpus (3)

• Measurement of Coherent Vibrational Dynamics with X-ray Transient Absorption Spectroscopy Simultaneously at the Carbon K- and Chlorine L${}_{2,3}$- Edges
• Attosecond Probing of Coherent Vibrational Dynamics in CBr${}_4$
• Different Rise Times of Atomic Br M${}_{4,5}$ 3d${}_{3/2,5/2}$ Core Level Absorptions during Br${}_2$ C ${}^1{\Pi }_u$ $1_u$ State Dissociation via Extreme Ultraviolet Transient Absorption Spectroscopy