Scattering of electronically excited sulphur dioxide from graphite

Franz Kaspar; Karl Ludwig Kompa; Christoph Mueller; Hartmut Schroeder

doi:10.1117/12.20616

1 August 1990 Scattering of electronically excited sulphur dioxide from graphite

Franz Kaspar, Karl Ludwig Kompa, Christoph Mueller, Hartmut Schroeder

Proceedings Volume 1279, Laser-Assisted Processing II; (1990) https://doi.org/10.1117/12.20616
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

So2 molecules in a He-seeded molecular beam were electronically excited with a XeC1 excimer laser and scattered from the basal plane of graphite in an UHV chamber. Their characteristic scattering features were measured by counting those molecules which radiate after scattering. The survival probability of SO2 scattered from graphite is 2.5 * lO-. This implies that the probability of detecting excited molecules which have collided twice on the surface is already negligible. In this favourable case, the dynamics of scattering can be described with a hard cube model. The parallel component of the momentum is conserved, whereas the perpendicular component in our case is reduced to almost half of its initial value.

Citation Download Citation

Franz Kaspar, Karl Ludwig Kompa, Christoph Mueller, and Hartmut Schroeder "Scattering of electronically excited sulphur dioxide from graphite", Proc. SPIE 1279, Laser-Assisted Processing II, (1 August 1990); https://doi.org/10.1117/12.20616

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