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Updated: May 18, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Ultrafast dynamics in postcollision interaction after multiple auger decays in argon 1s photoionization
R Guillemin1, S Sheinerman, C Bomme
1UPMC, Université Paris 06, LCPMR, 11 Rue Pierre et Marie Curie, 75231 Paris Cedex 05, France.
Abstract:
Argon 1s photoionization followed by multiple Auger decays is investigated both experimentally, by means of photoelectron-ion coincidences, and theoretically. A strong influence of the different Auger decays on the photoelectron spectra is observed through postcollision interaction which shifts the maximum of the energy distribution and distorts the spectral shape. A good agreement between the calculated and measured spectra for selected Ar(n+) ions (n=1-5) allows one to estimate the widths (lifetimes) of the intermediate states for each specific decay pathway.
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