He Atomic Beam Scattering Study of Pt(111) Super-Structure Surface Induced by High Energy Molecular Beam of H 2 O
The super-structure, Pt(111)-(2×2), is investigated both by He atomic beam scattering (HAS) and low energy electron diffraction. The structure is produced by irradiation of a high energy H 2 O molecular beam, which is accelerated up to about 300 meV by dilution in He gas molecules. The HAS result sh...
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| Published in | Japanese Journal of Applied Physics Vol. 38; no. 2R; p. 868 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
01.02.1999
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| Online Access | Get full text |
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| Summary: | The super-structure, Pt(111)-(2×2), is investigated both by He atomic beam scattering (HAS) and low energy electron diffraction. The structure is produced by irradiation of a high energy H
2
O molecular beam, which is accelerated up to about 300 meV by dilution in He gas molecules. The HAS result shows that the structure is stable at 200 K and becomes unstable as the sample temperature is raised to 300 K. The observed structure is believed to be due to reconstruction of the Pt(111) surface, which is caused by H atoms produced during the collision process of H
2
O molecules with sufficiently high energy for dissociation. |
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| ISSN: | 0021-4922 1347-4065 |
| DOI: | 10.1143/JJAP.38.868 |