Positron annihilation in neutron-irradiated germanium

Journal Article · Sun Apr 01 04:00:00 EST 1979 · Sov. Phys. - Solid State (Engl. Transl.); (United States)

OSTI ID:5880108

Bartenev, G M; Bardyshev, I I; Erchak, D P; Stel'makh, V F; Tsyganov, A D

The annealing of radiation defects in a germanium single crystal irradiated with 10/sup 18/ neutrons/cm/sup 2/ was studied by positron annihilation, ESR, and resistivity measurements. It was found that positrons are trapped by radiation defects. The intensity of the narrow component of the angular correlation of the annihilation radiation yielded the concentration of defect clusters in the irradiated sample n/sub d/approx. =3 x 10/sup 14/ cm/sup -3/. Three characteristic annealing stages were identified. At 160--200 /sup 0/C, point defects were annealed within the crystal. At 200--320 /sup 0/C, there was ''loosening'' of the clusters, and the charge state of the defects changed. At 320--550 /sup 0/C, the clusters were annealed.

• Research Organization: Institute of Physical Chemistry, Academy of Sciences of the USSR, Moscow
• OSTI ID: 5880108
• Journal Information: Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 21:4; ISSN SPSSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ANNIHILATION
BARYONS
BASIC INTERACTIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
GERMANIUM
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
METALS
NEUTRONS
NUCLEONS
PARTICLE INTERACTIONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS