Abstract
The initial dissociative chemisorption probability of on Fe(111) is found to increase by a factor of ≃ with increasing kinetic energy, rising from ≃1× at ≃0.09 eV to over 1× at 4.3 eV. This probability also increases with decreasing surface temperature, suggesting that reagent energy provides access to an intermediate state, such as -, whose population also increases with kinetic energy, consistent with the accepted mechanism at low energies.
- Received 30 March 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.2768
©1987 American Physical Society