Real-time study of oxygen reaction on Si(100)

The reaction of oxygen on Si(100) surfaces from 700 to 950°C has been studied in real time with about 10-<>s resolution, by use of pulsed molecular-beam reactive scattering. The oxygen reaction probability is roughly proportional to the normal component of the incident ve- locity of the O2 molecule. An intermediate step between the initial adsorption of oxygen and the desorption of SiO was observed. © 1987 The American Physical Society.