Related Experiment Video
Updated: Sep 2, 2025

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
A new endstation for extreme-ultraviolet spectroscopy of free clusters and nanodroplets
Björn Bastian1, Jakob D Asmussen1, Ltaief Ben Ltaief1
1Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark.
Abstract:
In this work, we present a new endstation for the AMOLine of the ASTRID2 synchrotron at Aarhus University, which combines a cluster and nanodroplet beam source with a velocity map imaging and time-of-flight spectrometer for coincidence imaging spectroscopy. Extreme-ultraviolet spectroscopy of free nanoparticles is a powerful tool for studying the photophysics and photochemistry of resonantly excited or ionized nanometer-sized condensed-phase systems. Here, we demonstrate this capability by performing photoelectron-photoion coincidence experiments with pure and doped superfluid helium nanodroplets. Different doping options and beam sources provide a versatile platform to generate various van der Waals clusters as well as He nanodroplets. We present a detailed characterization of the new setup and show examples of its use for measuring high-resolution yield spectra of charged particles, time-of-flight ion mass spectra, anion-cation coincidence spectra, multi-coincidence electron spectra, and angular distributions. A particular focus of the research with this new endstation is on intermolecular charge and energy-transfer processes in heterogeneous nanosystems induced by valence-shell excitation and ionization.
More Related Videos
Related Concept Videos
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
Atomic Emission Spectroscopy: Instrumentation
UV–Vis Spectrometers
UV–Vis Spectroscopy: Molecular Electronic Transitions
Atomic Absorption Spectroscopy: Atomization Methods
Atomic Emission Spectroscopy: Lab

