Berlin 2014 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 45: Velocity map imaging - focusing on intra- and interatomic dynamics SYPS 2 (with jDPG)

A 45.5: Hauptvortrag

Donnerstag, 20. März 2014, 18:00–18:30, Audimax

Velocity map imaging studies of quantum state resolved scattering at gas-solid and gas-SAMs surfaces — •David J. Nesbitt¹, Monika Gruetter³, J. Robert Roscioli², Carl Hoffman¹, and Daniel J. Nelson¹ — ¹JILA/University of Colorado, Boulder, CO, USA — ²Aerodyne Research Inc., 45 Manning Road, Billerica, MA, USA — ³University of Goettingen, Goettingen, Germany

This talk describes results from a novel surface-scattering technique which combines resonance enhanced multiphoton ionization (REMPI) with velocity-map imaging (VMI) to yield quantum-state and 2D velocity component resolved distributions in the scattered molecular flux. We will discuss work in hyperthermal scattering (Einc = 21(5) kcal/mol) of jet cooled HCl from i) Au(111) on flat mica surfaces and ii) -CH3 terminated self-assembled monolayers (SAM). These first data establish an exciting new class of experimental tools for exploring energy transfer and reactive scattering events on SAMs, liquid, and metal interfaces with quantum state resolved information on correlated internal and translational distributions.