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UFN, 2002 Volume 172, Number 1, Pages 67–83 (Mi ufn1973)

This article is cited in 96 papers

INSTRUMENTS AND METHODS OF INVESTIGATION

Positron annihilation spectroscopy in materials structure studies

V. I. Grafutin, E. P. Prokop’ev

Institute for Theoretical and Experimental Physics (Russian Federation State Scientific Center), Moscow

Abstract: A relatively new method of materials structure analysis — positron annihilation spectroscopy (PAS) — is reviewed. Measurements of positron lifetimes, the determination of positron 3γ- and 2γ-annihilation probabilities, and an investigation of the effects of different external factors on the fundamental characteristics of annihilation constitute the basis for this promising method. The ways in which the positron annihilation process operates in ionic crystals, semiconductors, metals and some condensed matter systems are analyzed. The scope of PAS is described and its prospects for the study of the electronic and defect structures are discussed. The applications of positron annihilation spectroscopy in radiation physics and chemistry of various substances as well as in physics and chemistry of solutions are exemplified.

PACS: 71.60.+z, 78.70.Bj, 82.55.+e

Received: March 20, 2001

DOI: 10.3367/UFNr.0172.200201c.0067


 English version:
Physics–Uspekhi, 2002, 45:1, 59–74

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