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Positronium Decay Study of Pore Sizes in Silica Sol-Gels

Published online by Cambridge University Press:  25 February 2011

T. W. Zerda ,
G. Hoang ,
B. Miller ,
C. A. Quarles  and
G. Orcel
T. W. Zerda
Affiliation:
Physics Department, Texas Christian University, P. O. Box 32915, Fort Worth, TX 76129
G. Hoang
Affiliation:
Physics Department, Texas Christian University, P. O. Box 32915, Fort Worth, TX 76129
B. Miller
Affiliation:
Physics Department, Texas Christian University, P. O. Box 32915, Fort Worth, TX 76129
C. A. Quarles
Affiliation:
Physics Department, Texas Christian University, P. O. Box 32915, Fort Worth, TX 76129
G. Orcel
Affiliation:
Geltech, P. O Box 18, Alachua, FL 32615
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Abstract

Positronium annihilation has been used to measure pore diameters in silica sol-gels. The results have been compared to those obtained from the BET technique. Pore development in the presence of chemical additives and during the thermal treatment has been studied. A model relating positronium lifetime to the pore size has been proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 653
Copyright
Copyright © Materials Research Society 1988

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References

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