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VACANCY FORMATION ENERGY IN MOLECULAR SOLID CH4
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WANG Shaojie (S.J.Wang);Y . C . Jean* |
Department of Physics, Wuhan University, Wuhan
*Department of Physics, University of Missouri-Kansas City, Kansas City MO.64110, U.S.A. |
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Cite this article: |
WANG Shaojie (S.J.Wang), Y . C . Jean 1988 Chin. Phys. Lett. 5 557-560 |
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Abstract The Doppler broadening energy spectra have been measured on high-purity condensed CH4 in temperature range from 30K to 105K. In solid phase and below the melting point, the variations of S-parameter with temperature were interpreted as o-Ps trapped in the thermally activated vacancy-type defects. A vacancy formation energy of 0.10±0.02eV was derived by positronium trapping model.
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Keywords:
3170K
7870B
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Published: 01 December 1988
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