Probing the Photoemission Delay in Single-Photon Double Ionization
POSTER
Abstract
X-ray free-electron laser (XFEL) facilities, which produce light pulses with attosecond scale duration, enable the exploration of multi-body interactions on ultrafast timescales. Combining these novel x-ray pulses with circularly polarized infrared laser pulses enables precision timing of photoemission phenomena. We investigate the retardation of valence photoelectrons released via single-photon, double ionization compared to direct ionization of core-level electrons in a neon target. Non-sequential ionization is mediated by electron correlation interactions; thus, we directly probe the timescale for electronic correlations. We use a novel covariance mapping technique to analyze the angular streaking data to suppress the effect of noise in our photoemission measurement.
*Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. This work was supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES), Chemical Sciences, Geosciences, and Biosciences Division (CSGB).
Presenters
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Erik Isele
- PULSE Institute, SLAC National Accelerator Laboratory