Investigations into the Influence of Hydrogen and Defects on the Spectra of Lifetime of Positrons in Palladium

• Authors: R. Pietrzak , R. Szatanik , W. Smiatek
• Languages of publication: EN

Abstracts

EN

The influence of interstitial hydrogen concentration and structural defects caused by quenching of palladium, begun at different temperatures up to the temperature of liquid nitrogen or by stretching by external forces, on spectra of lifetimes of positrons in this metal was investigated. It was found that the spectra of positron lifetimes in the examined systems are best described by their distribution into two components. On the basis of the two-state model of annihilation, the conclusion was drawn that the initial temperature from which quenching of palladium is commenced and also the relative elongation, which is caused by external forces, markedly influence the concentrations and sizes of defects in the sample.

Keywords

EN

78.70.Bj

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2001
• Volume: 99
• Issue: 3-4
• Pages: 455-463

Dates

published

2001-03/04

received

2000-09-18

Contributors

author

R. Pietrzak

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

author

R. Szatanik

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

author

W. Smiatek

• Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.99.455