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Ultrafast dynamics of surface chemical bond-breaking studied by optical and x-ray lasers
  Molecular Physics seminar

Monday 22 April 2013
from 10:15 to 11:00
at FA31
Speaker : Henrik Öström (FYSIKUM, Stockholms Universitet)
Abstract : Reactions at surfaces form the basis for industrially important heterogeneous catalysis, but the microscopic processes governing these reactions are difficult to study experimentally. The combination of optical and x-ray laser experiments offer unique possibilities to gain insights in ultrafast dynamical processes at surfaces. I will present how we have studied a simple surface chemical reaction the breaking of a surface chemical bond in the CO/Ru(0001) system (Science 339, 1302 (2013); Phys. Rev. Lett, in press). We have determined both the desorption mechanisms and electronic structure dynamics prior to desorption. The x-ray experiments allow us to follow different dynamical processes as they occur on the surface and how the molecules enter a previously never observed precursor state. The complementary optical laser experiments allow us to correlate these dynamical processes with the desorption reaction.

Nordita  | Last modified 12 April 2013 16:01  |  HELP