Interatomic-Coulombic-decay-induced recapture of photoelectrons in helium dimers
P. Burzynski, F. Trinter, J. B. Williams, M. Weller, M. Waitz, M., Pitzer, J. Voigtsberger, C. Schober, G. Kastirke, C. M\"uller, C. Goihl, F., Wiegandt, R. Wallauer, A. Kalinin, L. Ph. H. Schmidt, M. Sch\"offler, G., Schiwietz, N. Sisourat, T. Jahnke, and R. D\"orner
TL;DR
This paper studies how interatomic Coulombic decay in helium dimers causes photoelectrons to be recaptured, shifting ionization thresholds and revealing new electron dynamics at the atomic level.
Contribution
It demonstrates the recapture of photoelectrons induced by ICD in helium dimers, a phenomenon not previously observed in this context.
Findings
Threshold shift towards higher energies in helium dimers
Recapture of photoelectrons after ICD emission
Altered ionization dynamics in helium dimers
Abstract
We investigate the onset of photoionization shakeup induced interatomic Coulombic decay (ICD) in He2 at the He+*(n = 2) threshold by detecting two He+ ions in coincidence. We find this threshold to be shifted towards higher energies compared to the same threshold in the monomer. The shifted onset of ion pairs created by ICD is attributed to a recapture of the threshold photoelectron after the emission of the faster ICD electron.
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