Defect trapping of ion-implanted deuterium in nickel
Trapping of ion-implanted deuterium by lattice defects in nickel has been studied by ion-beam-analysis techniques in the temperature range between 30 and 380 K. The deuterium-depth profiles were determined by measuring either the ..cap alpha.. particles or the protons from the /sup 3/He-excited nuclear reaction D(/sup 3/He,..cap alpha..)p, and the deuterium lattice location was obtained by means of ion channeling. Linear-ramp annealing (1 K/min) following a 10-keV D/sup +/ implantation in nickel produced two annealing stages at 275 and 320 K, respectively. The release-vs-temperature data were analyzed by solving the diffusion equation with appropriate trapping terms, yielding 0.24 and 0.43 eV for the trap-binding enthalpies associated with the two stages, referred to as an untrapped solution site. The 0.24-eV trap corresponds to deuterium close to the octahedral interstitial site where it is believed to be trapped at a vacancy, whereas it is suggested that the defect correlated with the 0.43-eV trap is a multiple-vacancy defect. The previously air-exposed and electropolished nickel surface was essentially permeable; the surface-recombination coefficient was determined to be K> or approx. =10/sup -19/ cm/sup 4//s at 350 K.
- Research Organization:
- Institute of Physics, University of Aarhus, DK-8000 Aarhus C, Denmark
- OSTI ID:
- 5458244
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 53:5; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
ALPHA PARTICLES
ANNEALING
BARYONS
BEAMS
CHANNELING
CHARGED PARTICLES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DEUTERIUM IONS
DISTRIBUTION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXCITATION
FERMIONS
HADRONS
HEAT TREATMENTS
HELIUM 3
HELIUM ISOTOPES
INFORMATION
ION BEAMS
ION IMPLANTATION
IONS
ISOTOPES
LIGHT NUCLEI
LOW TEMPERATURE
MEDIUM TEMPERATURE
METALS
NICKEL
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PROTONS
SPATIAL DISTRIBUTION
STABLE ISOTOPES
TRANSITION ELEMENTS
TRAPPING
VERY LOW TEMPERATURE