Characterization of atomic defects and their aggregates using positron annihilation spectroscopy

Conference · Thu Nov 01 00:00:00 EST 1984

OSTI ID:6189885

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

Positrons localize in trapped states at a variety of defects 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 (USA)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 6189885
• Report Number(s): CONF-841157-65; ON: DE85006206
• Resource Relation: Conference: Symposium on the scientific basis for nuclear waste management, Boston, MA, USA, 26 Nov 1984
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALLOYS
DEFECTS
GAMMA SPECTROSCOPY
DATA ANALYSIS
METALS
POSITRONS
ANNIHILATION
TRAPPING
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
INTERACTIONS
LEPTONS
SPECTROSCOPY
360102* - Metals & Alloys- Structure & Phase Studies
645100 - High Energy Physics- Particle Interactions & Properties-Experimental