H2O-induced quenching of the negative-ion resonance scattering for N2 
physisorbed on Al(111)

Jacobi, Karl; Bertolo, M.; Geng, Peter; Hansen, W.; Astaldi, C.

doi:10.1016/0009-2614(90)85310-9

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H₂O-induced quenching of the negative-ion resonance scattering for N₂ physisorbed on Al(111)

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Jacobi, Karl
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Bertolo, M.
Fritz Haber Institute, Max Planck Society;

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Geng, Peter
Fritz Haber Institute, Max Planck Society;

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Hansen, W.
Fritz Haber Institute, Max Planck Society;

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Citation

Jacobi, K., Bertolo, M., Geng, P., Hansen, W., & Astaldi, C. (1990). H₂O-induced quenching of the negative-ion resonance scattering for N₂ physisorbed on Al(111). Chemical Physics Letters, 173(1), 97-102. doi:10.1016/0009-2614(90)85310-9.

Cite as: https://hdl.handle.net/21.11116/0000-0008-3CB4-A

Abstract

Monolayers of N₂ physisorbed on the Al(111) surface at 20 K, were investigated by means of high-resolution electron energy-loss spectroscopy (HREELS) and UV photoelectron spectroscopy (UPS). The N₂ stretching vibration at 290 meV is excited by negative-ion resonance scattering. By coadsorption of a 0.16 monolayer of H₂O, the N₂ stretching mode is strongly suppressed. This is explained as due to a complete quenching of the negative-ion resonance of N₂ by the H₂O molecules.