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Emission of exoelectrons during oxidation of Cs via thermal activation of a metastable O-2 surface species

MPS-Authors
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Grobecker,  Ralph
Fritz Haber Institute, Max Planck Society;

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Hongyue,  Shi
Fritz Haber Institute, Max Planck Society;

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Bludau,  Horst
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21626

Hertel,  Tobias
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons255463

Greber,  T.
Fritz Haber Institute, Max Planck Society;

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Böttcher,  Artur
Fritz Haber Institute, Max Planck Society;

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

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Ertl,  Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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PhysRevLett.72.578.pdf
(Publisher version), 261KB

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Citation

Grobecker, R., Hongyue, S., Bludau, H., Hertel, T., Greber, T., Böttcher, A., et al. (1994). Emission of exoelectrons during oxidation of Cs via thermal activation of a metastable O-2 surface species. Physical Review Letters, 72(4), 578-581. doi:10.1103/PhysRevLett.72.578.


Cite as: https://hdl.handle.net/21.11116/0000-0009-9DA9-8
Abstract
Exposure of Cs surfaces to O2 causes the emission of exoelectrons. With a Cs monolayer on Ru(0001) the maximum yield is observed with an already partly oxidized surface on which a metastable O-2 species could be identified. Thermally activated transformation (with an activation energy of 0.8 eV) of this phase leads to dissociation accompanied by exoelectron emission via Auger deexcitation.