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Updated: Jun 2, 2026

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
Spatial quantum beats in vibrational resonant inelastic soft x-ray scattering at dissociating states in oxygen
A Pietzsch1, Y-P Sun, F Hennies
1MAX-lab, Lund University, Box 118, S-221 00 Lund, Sweden.
Abstract:
Resonant inelastic soft x-ray scattering (RIXS) spectra excited at the 1σ(g) → 3σ(u) resonance in gas-phase O2 show excitations due to the nuclear degrees of freedom with up to 35 well-resolved discrete vibronic states and a continuum due to the kinetic energy distribution of the separated atoms. The RIXS profile demonstrates spatial quantum beats caused by two interfering wave packets with different momenta as the atoms separate. Thomson scattering strongly affects both the spectral profile and the scattering anisotropy.
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