Thermal desorption in the lattice gas model – H adsorbed on Si(1 0 0)

Thermal desorption rate in the lattice gas model has a diverging enhancement near saturation coverage, which is sometimes overlooked. It exists even for interacting adsorbates in the lattice gas model. This divergence disappears when there are adsorbed sites with slightly higher energies. An example, H/Si(1 0 0), is discussed in connection with this feature.