Jean, Y. C. ; Lu, X. ; Lou, Y. ; Bharathi, A. ; Sundar, C. S. ; Lyu, Y. ; Hor, P. H. ; Chu, C. W. (1992) Positron annihilation in C60 Physical Review B: Condensed Matter and Materials Physics, 45 (20). pp. 12126-12129. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v45/i20/p12126_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.45.12126
Abstract
Positron lifetime experiments have been performed in C60 as a function of (1) pressure up to 14.7 kbar, (2) temperature between 10 and 300 K, and (3) Oxygen pressure up to 2 atm. Nearly single lifetimes (356 ps, 98%) have been observed in C60 solids. A large lifetime-pressure variation [(9-3±0.5)×10−3 kbar−1] and a Monotonic lifetime-temperature variation [(1.5±0.2)×10−4 K−1] are observed while the presence of oxygen does not change the Positron lifetime. These results are interpreted in terms that the Positron is mainly annihilating with electrons near the interstitial octahedral sites of FCC lattices. Results of the calculated positron density distribution support this interpretation.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 53196 |
| Deposited On: | 05 Aug 2011 10:32 |
| Last Modified: | 05 Aug 2011 10:32 |
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