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arXiv · 1606.03222

Velocity Map Imaging the Scattering Plane of Gas Surface Collisions

David J. Hadden·Thomas M. Messider·Joseph G. Leng·Stuart J. Greaves
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Abstract

The ability of gas-surface dynamics studies to resolve the velocity distribution of the scattered species in the 2D sacattering plane has been limited by technical capabilities and only a few different approaches have been explored in recent years. In comparison, gas-phase scattering studies have been transformed by the near ubiquitous use of velocity map imaging. We describe an innovative means of introducing a surface within the electric field of a typical velocity map imaging experiment. The retention of optimum velocity mapping conditions was demonstrated by measurements of iodomethane-d3 photodissociation and SIMION calculations. To demonstrate the systems capabilities the velocity distributions of ammonia molecules scattered from a PTFE surface have been measured for multiple product rotational states.

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David J. Hadden, Thomas M. Messider, Joseph G. Leng, Stuart J. Greaves. 2016-06-10. Velocity Map Imaging the Scattering Plane of Gas Surface Collisions. https://doi.org/10.1063/1.4965970

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