Femtosecond dynamics are observed by resonant x-ray Raman scattering (RXS) after excitation along the dissociative Cl 1s→6ơ* resonance of gas-phase HCl. The short core-hole lifetime results in a complete breakdown of the common nondispersive behavior of soft-x-ray transitions between parallel potentials. We evidence a general phenomenon of RXS in the hard-x-ray region: a complete quenching of vibrational broadening. This opens up a unique opportunity for superhigh resolution x-ray spectroscopy beyond vibrational and lifetime limitations.
Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Physical Chemistry
Copyright American Physical Society, used with permission
Stolte, W. C.,
Hudson, A. C.,
Lindle, D. W.
Femtosecond nuclear motion of HCl probed by resonant x-ray Raman scattering in the Cl 1s region.
Physical Review A, 73(020706),