Velocity Map Imaging the Scattering Plane of Gas Surface Collisions
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.
Cite
@article{arxiv.1606.03222,
title = {Velocity Map Imaging the Scattering Plane of Gas Surface Collisions},
author = {David J. Hadden and Thomas M. Messider and Joseph G. Leng and Stuart J. Greaves},
journal= {arXiv preprint arXiv:1606.03222},
year = {2016}
}
Comments
8 pages, 5 figures, to be submitted to journal