Characterization of atomic defects and their aggregates using positron annihilation spectroscopy

Journal Article · Tue Jan 01 04:00:00 EST 1985 · Mater. Res. Soc. Symp. Proc.; (United States)

OSTI ID:6716657

Siegel, R W; Fluss, M J; Smedskjaer, L C

Positrons localize in trapped states at a variety of defect sites in solids, from which they subsequently annihilate with unique observable characteristics. As such, the positron is a valuable probe for the study of these defects. Positron annihilation spectroscopy (PAS) has made significant contributions in recent years to the determination of atomic defect properties in metals and alloys, and in molecular solids as well. It has also been used extensively in the monitoring and characterization of vacancy-like microstructure development, as occurs during post-irradiation annealing. The characterization of defects using PAS is selectively reviewed and some possibilities for using the positron as a localized probe of the atomic and electronic structure of atomic defects and their aggregates are discussed. 32 references, 4 figures.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 6716657
• Journal Information: Mater. Res. Soc. Symp. Proc.; (United States), Journal Name: Mater. Res. Soc. Symp. Proc.; (United States) Vol. 41; ISSN MRSPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ANNIHILATION
BASIC INTERACTIONS
DEFECTS
ELECTROMAGNETIC INTERACTIONS
ELEMENTS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
METALS
MOLYBDENUM
NICKEL
PARTICLE INTERACTIONS
PHYSICAL RADIATION EFFECTS
POSITRON-POSITRON INTERACTIONS
RADIATION EFFECTS
SPECTROSCOPY
TRANSITION ELEMENTS