Photoionizaton of Pure and Doped Helium Nanodroplets

Abstract

Helium nanodroplets, commonly regarded as the "nearly ideal spectroscopic matrix", are being actively studied for more than two decades now. While they mostly serve as cold, weakly perturbing and transparent medium for high-resolution spectroscopy of embedded molecules, their intrinsic quantum properties such as microscopic superfluidity still are subject-matter of current research. This article reviews recent work on pure and doped He nanodroplets using PI spectroscopy, an approach which has greatly advanced in the past years. While the notion of the ideal spectroscopic matrix mostly no longer holds in this context, photoionization techniques provide detailed insights into the photo-physical properties of pure and doped He nanodroplets and their relaxation dynamics following electronic excitation. Exploiting nowadays available high laser fields, even highly ionized states of matter on the nanoscale can be formed. Our particular focus lies on recent experimental progress including fs time-resolved spectroscopy, photoion and electron imaging, and novel sources of highly energetic radiation.

accepted by International Reviews in Physical Chemistry

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Cited by in corpus (9)

• Density Functional Theory of doped superfluid liquid helium and nanodroplets
• Quasiparticle approach to molecules interacting with quantum solvents
• Interatomic Coulombic decay in helium nanodroplets
• Fingerprints of angulon instabilities in the spectra of matrix-isolated molecules
• Angular self-localization of impurities rotating in a bosonic bath
• Inelastic scattering of photoelectrons from He nanodroplets
• Predissociation dynamics of lithium iodide
• Desorption Dynamics of Rb_2 Molecules off the Surface of Helium Nanodroplets
• Dopant-induced ignition of helium nanoplasmas -- a mechanistic study