Time-Resolved Ultrafast Interatomic Coulombic Decay inSuperexcited Sodium-Doped Helium Nanodroplets

Here, the dynamics of ICD between an excited He atom and a Na dopant atom in superexcited He nanodroplets was measured for the first time by extreme-ultraviolet (XUV) time-resolved electron spectroscopy. J.D. Asmussen et al. J.Phys.Chem.Lett.,13, 4470 (2022)
In the present Letter, we present time-resolved photoelectron spectra of He nanodroplets doped with sodium (Na) atoms excited into the higher-lying droplet band associated with the atomic 1s3p and 1s4p states of He. From the reappearance following depletion of the excited He states with a UV probe laser, we infer the effective decay time of ICD for both the system of two excited He atoms in the droplet and for an excited He atom and a Na atom after relaxation from the superexcited state into the metastable 1s2s 1S and 3S states.

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Asmussen Jakob D., Michiels Rupert, Bangert Ulrich, Sisourat Nicolas, Binz Marcel, Bruder Lukas, Danailov Miltcho, Di Fraia Michele, Feifel Raimund, Giannessi Luca, Plekan Oksana, Prince Kevin C., Squibb Richard J., Uhl Daniel, Wituschek Andreas, Zangrando Marco, Callegari Carlo, Stienkemeier Frank, Mudrich Marcel
J. Phys. Chem. Lett., Vol. 13, pp. 4470-4478 (2022)
doi: 10.1021/acs.jpclett.2c00645 
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