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physics.atom-ph2026
Coherent vibrational dynamics in molecular bond breaking: methyl radical umbrella mode probed by femtosecond x-ray spectroscopy
Christian A. Schröder, John H. Hack, Joshua L. Edwards +6
We report on the observation of coherent molecular vibrations launched by the breaking of a molecular bond. The methyl radical, which is produced by photodissoci…
physics.atom-ph2025
Probing autoionization decay lifetimes of the core-excited states in xenon using attosecond noncollinear four-wave-mixing spectroscopy
Nicolette G. Puskar, Patrick Rupprecht, Jan DvoÅák +6
The decay of core-excited states is a sensitive probe of autoionization dynamics and correlation effects in many-electron systems, occurring on the fastest timescales. Xenon, with…
physics.atom-ph2024
Extracting doubly-excited state lifetimes in helium directly in the time domain with attosecond noncollinear four-wave-mixing spectroscopy
Patrick Rupprecht, Nicolette G. Puskar, Daniel M. Neumark +1
The helium atom, with one nucleus and two electrons, is a prototypical system to study quantum many-body dynamics. Doubly-excited states, or quantum states in which both electrons…