Behavior of the reemitted slow positron on hydrogen-adsorbed Ni (1 1 1) surface

We have analyzed the Doppler broadening spectra of the positron annihilation and reemitted slow positrons from hydrogen-adsorbed Ni (1 1 1) surface on different adsorbing conditions. It is shown that the escaping of reemitted slow positrons and ortho-positroniums from hydrogen-lightly adsorbed Ni (1...

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Bibliographic Details
Published in:Applied surface science 2008-09, Vol.254 (23), p.7989-7992
Main Authors: Hirota, K., Komagata, S., Arii, S., Kanazawa, I., Fukutani, K., Nozawa, K., Komori, F.
Format: Article
Language:English
Subjects:
Adsorbed hydrogen
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Ni surface
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other interactions of matter with particles and radiation
Physics
Positron annihilation
Reemitted slow positron
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Summary:We have analyzed the Doppler broadening spectra of the positron annihilation and reemitted slow positrons from hydrogen-adsorbed Ni (1 1 1) surface on different adsorbing conditions. It is shown that the escaping of reemitted slow positrons and ortho-positroniums from hydrogen-lightly adsorbed Ni (1 1 1) is more than that of hydrogen-saturatedly adsorbed Ni (1 1 1).
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2008.04.111