Bieske Laser Spectroscopy Group
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On the Chemistry
Building steps: Phil Wearne,
Berwyck Poad, Corinna Emmeluth,
Evan Bieske, Adam
Trevitt, Zoë Loh. Chris Thompson and Rosie Wilson.
We employ novel forms of infrared spectroscopy to explore the properties of charged complexes and clusters in the gas-phase. The ultimate goal is to understand the interaction between ions and neutral molecules. We have studied a variety of small clusters consisting of a halide anion (F–, Cl–, Br–, I–) "solvated" by one or several neutral molecules (H2, CH4, C2H2, C6H6), and more recently we complexes containing metal cations including, Li+-H2, Al+-H2 and Al+-(CH4)n.
Micro-
and nanoparticles are contained in a quadrupole ion
trap and probed using laser-based techniques. The aim is to
characterize small particles in the gas-phase where they are
unperturbed by interactions with solvent or substrate. By monitoring
scattered laser light it is possible to measure the
mass and charge of particles having diameters in the 0.5-10 µm
range, and to follow changes in the particle's size and shape.
