Abstract
The use of ion beam methods for determining the adsorbate coverage of single crystal surfaces can lead to absolute values with uncertainties less than 0.05 ML (1 ML = 1 monolayer ≃ 1015 atoms cm-2) in favourable cases. This accuracy arises from the availability of reliable nuclear reaction cross section data for light ions incident at MeV energies on low atomic number atoms, specifically H(D), C and O isotopes. Examples of such coverage measurements are given for CO/Pt(lll) at 185K assayed separately for C and O, O2/Ni(100) at 300K determined for both chemisorbed O16 and O18, and C2D4/Pt(lll) at 100K determined through measurements of both C and D.
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© 1991 Plenum Press, New York
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Mitchell, I.V., Lennard, W.N., Massoumi, G.R., Griffiths, K. (1991). The Measurement of Absolute Surface Coverages Using Nuclear Reaction Analysis. In: Brongersma, H.H., van Santen, R.A. (eds) Fundamental Aspects of Heterogeneous Catalysis Studied by Particle Beams. NATO ASI Series, vol 265. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5964-7_34
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