Positron and positronium studies of silica aerogel
Reference:
Edwardson, C. J., Grogan, M. D. W., Birks, T. A. and Coleman, P. G., 2011. Positron and positronium studies of silica aerogel. Journal of Physics: Conference Series, 262 (1), 012018.
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Official URL:
http://dx.doi.org/10.1088/1742-6596/262/1/012018
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Abstract
Variable-energy positron annihilation spectroscopy (VEPAS) has been used to probe the structure of gold nanoparticles suspended in a silica aerogel matrix by measuring the annihilation parameters S and W, and the ortho-positronium (o-Ps) fraction parameter F, as a function of incident positron energy. Correction methods have been developed to improve the sensitivity of F by removing background contributions to the number of recorded o-Ps annihilation events. Charging effects have also been observed and investigated.
Details
| Item Type | Articles | ||||
| Creators | Edwardson, C. J., Grogan, M. D. W., Birks, T. A. and Coleman, P. G. | ||||
| DOI | 10.1088/1742-6596/262/1/012018 | ||||
| Related URLs |
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| Departments | Faculty of Science > Physics | ||||
| Refereed | Yes | ||||
| Status | Published | ||||
| ID Code | 23202 | ||||
| Additional Information | 12th International Workshop on Slow Positron Beam Techniques for Solids, Surfaces, Atoms and Molecules, SLOPOS12. 1-6 August 2010. Magnetic Island, QLD, Australia. |
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