Collision-induced desorption of N-2 on Ni(100) studied with Fourier transform infrared spectroscopy

A collision-induced desorption (CID) phenomenon was investigated using a ne w combined system of a molecular beam and Fourier transform infrared spectr oscopy (FTIR). We have observed the desorption of N-2 from an Ni(100) surfa ce induced by collision with hyperthermal xenon atoms. FTIR spectra showed that N-2 molecules were removed randomly by the collision. The cross-sectio n of the CID depended on the incident energy of the xenon. For 1.23 eV this was 1.2 Angstrom(2). Ln addition, a difference between the mechanisms of C ID and thermal desorption was found. (C) 2000 Elsevier Science B.V. All rig hts reserved.