Some Observations on the Surface Sensitivity of Photoelectron Spectroscopy

Details Some Observations on the Surface Sensitivity of Photoelectron Spectroscopy Some Observations on the Surface Sensitivity of Photoelectron Spectroscopy

Dec 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972rspsa.331..383b&link_type=abstract

Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 331, Issue 1586, pp. 383-394

Physics

11

Scientific paper

As an essential preliminary to applying a number of different photoelectron spectroscopic methods to investigate the mechanism of solid/gas reactions their surface sensitivity has been explored. Data are reported for the sensitivity of e.s.c.a. for H2O, CO2 and CO adsorbed on Au. Also the interaction of mercury vapour with Au has been studied, adsorption and lattice penetration of the mercury being observed by monitoring the Hg(4f) peaks. In general, less than 10% of a monolayer of H2O and CO2 is detectable by X-ray photoelectron spectroscopy. Significant chemical shifts are observed between C(1s) present as an impurity in the Au lattice and C(1s) in adsorbed CO2, and also between O(1s) in H2O(ads) and CO2(ads). The surface sensitiveness of u.v. and X-ray photoelectron spectroscopy are compared.

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