Published May 1991 | Version v1
Journal article Metadata-only

Helium physisorption on internal surfaces of radiation-induced cavities in aluminum: a positron annihilation study

Creators

  • 1. Dept. of Physics, Univ. of Texas at Arlington (USA)
  • 2. Saha Inst. of Nuclear Physics, Calcutta (India)

Description

Positron lifetime spectra have been measured as a function of temperature in the range 10-295 K for aluminum single crystals irradiated with 0-40 MeV α particles to a total dose of ≅ 5x1017 cm-2. We present results for the temperature dependence of the lifetime component representing annihilations of the positrons trapped in helium-filled cavities. We discuss these results in terms of positron diffusion and helium physisorption on the internal surfaces of the irradiation-induced cavities. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Instruments and Methods in Physics Research, Section B
Journal Volume
56/57
Journal Issue
pt.1
Series
Nucl. Instrum. Methods Phys. Res., Sect. B.
Journal Page Range
578-581
ISSN
0168-583X
CODEN
NIMBE

Conference

Title
11. international conference on the application of accelerators in research and industry.
Dates
5-8 Nov 1990.
Place
Denton, TX (United States).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23004019
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ADSORPTION; ALPHA PARTICLES; ALUMINIUM; ANNIHILATION; CAVITIES; DIFFUSION; HELIUM; INELASTIC SCATTERING; KEV RANGE 01-10; KEV RANGE 10-100; KEV RANGE 100-1000; LIFETIME; LOW TEMPERATURE; MEDIUM TEMPERATURE; MEV RANGE 01-10; MEV RANGE 10-100; MONOCRYSTALS; PHYSICAL RADIATION EFFECTS; POSITRONS; SURFACES; TEMPERATURE DEPENDENCE; TRAPPING; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; CHARGED PARTICLES; CRYSTALS; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; HELIUM IONS; INTERACTIONS; IONIZING RADIATIONS; IONS; KEV RANGE; LEPTONS; MATTER; METALS; MEV RANGE; NONMETALS; PARTICLE INTERACTIONS; RADIATION EFFECTS; RADIATIONS; RARE GASES; SCATTERING