Titlebook: Studying Complex Surface Dynamical Systems Using Helium-3 Spin-Echo Spectroscopy; Barbara A. J. Lechner Book 2014 Springer International P

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An Improved High Intensity Supersonic Helium Beam Source,ange. Furthermore, an improved skimmer mount design increases the signal intensity by 20 %. After a brief introduction to supersonic beam sources, the design of the new source is described and experiments characterising its performance are discussed.

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The Dynamics of Cyclopentadienyl on Cu(111),omponent lineshapes that allow the determination of the energy difference between fcc and hcp sites of 10.6 . 1.7 meV in a Bayesian method probing the probability space of all data combined. Molecular dynamics simulations provide a friction coefficient of 2.5 . 0.5 ..

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The Helium-3 Spin-Echo Experiment,sis a complex matter. To facilitate the interpretation of experimental results, the physical principles underlying the scattering process are described and an outline of the most common analysis techniques is given.

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The Dynamics of Cyclopentadienyl on Cu(111),potential energy surface and frictional coupling to the substrate are determined from measurements of dynamics of the molecule by helium-3 spin-echo. The molecule is remarkably mobile, moving in single jumps between adjacent hollow sites over an energy barrier of 41 . 1 meV. The data exhibit multi-c