Determination of radii of nanoobjects in porous systems and some defective materials by positron annihilation spectroscopy

Positron annihilation spectroscopy (PAS) is shown to be one of the effective modern methods to determine sizes of nano-objects (vacancies and vacancy clusters), free volumes of pores, cavities, voids, and their concentrations and chemical compositions in nanomaterials and porous systems. A brief rev...

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Bibliographic Details
Published in:Surface investigation, x-ray, synchrotron and neutron techniques x-ray, synchrotron and neutron techniques, 2009-12, Vol.3 (6), p.917-925
Main Authors: Grafutin, V. I., Prokop’ev, E. P., Timoshenkov, S. P., Funtikov, Yu. V.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Surfaces and Interfaces
Thin Films
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Summary:Positron annihilation spectroscopy (PAS) is shown to be one of the effective modern methods to determine sizes of nano-objects (vacancies and vacancy clusters), free volumes of pores, cavities, voids, and their concentrations and chemical compositions in nanomaterials and porous systems. A brief review is given of experimental studies on nanodefects in proton irradiated porous silicon, silicon, and quartz single crystals.
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451009060123