Fig. 5: XPS during heating in a hydrogen atmosphere.

Peak area and top view of the C1s spectra recorded during heating of (~0.04 ML) 2-butyne-covered Co(0001) in the presence of 1 × 10−1 mbar H2 (0.2 K s−1, hν = 420 eV). The experimental data is shown by a solid red line, while the output of our kinetic model is shown as a dashed grey line.