Multiple photoelectron inelastic scattering in large He nanodroplets
Niklas Scheel, Narcis Silviu Blaj, Rajni Rajni, Asbjørn Ørnemark Lægdsmand, Jayesh Sadasivan, Subhendu De, Sivarama Krishnan, John Bozek, Aleksandar R. Milosavljevic, Marcel Mudrich
Abstract
Helium nanodroplets are ideal testbeds for elucidating secondary processes induced by ionizing radiation in condensed matter. Here we study photoionization electron spectra of large He nanodroplets in the extreme ultraviolet region, where photoelectrons undergo multiple inelastic collisions with He atoms in the nanodroplets. The resulting characteristic electron energy-loss features are identified by their dependence on photon energy and nanodroplet size and by comparison with a simple numerical simulation. Conditions for minimizing electron scattering with the He nanodroplets are discussed.
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