Positron Annihilation in Polycrystalline Silver Samples Subjected to the Stretching Force
J Pajak; W Rudzińska; R Pietrzak; Cz Szymański; W Smiatek; J Pajak; Institute of Physics, Opole University, Oleska 48, Opole, 45-052, Poland; W Rudzińska; Institute of Physics, Opole University, Oleska 48, Opole, 45-052, Poland; R Pietrzak; Institute of Physics, Opole University, Oleska 48, Opole, 45-052, Poland; Cz Szymański; Institute of Physics, Opole University, Oleska 48, Opole, 45-052, Poland; W Smiatek; Institute of Physics, Opole University, Oleska 48, Opole, 45-052, Poland
Журнал:
Physica Scripta
Дата:
2003-01-01
Аннотация:
Angular distributions of the positron annihilation quanta, positron lifetime and resistivity were measured for polycrystalline silver samples deformed by uniaxial tension up to different deformation degrees. The S parameter as a function of deformation degree of the sample has been determined. The data obtained for silver samples elongated up to different elongation degrees indicate the dominant role of vacancies and larger defects type clusters created during the deformation process. The positron annihilation data are corroborated by results obtained by resistivity measurements.
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