1998 Volume 19 Issue 4 Pages 257-258
We have calculated the desorption curves of molecular hydrogen from hydrogenated diamond surfaces as the rate-determining step is the bondbreaking between carbon and hydrogen atoms at CHχ(χ=1, 2, 3) species on surfaces. We can simulate the broad curve of H2 desorption by assuming the normal distribution of activation energies of desorption even though a simple rate equation of first-order desorption can not reproduce.