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A study of the effect of deformation on the shape of the angular correlation of positron annihilation radiation
Author(s) -
Brümmer Otto,
Dlubek Günter
Publication year - 1977
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19770120510
Subject(s) - annihilation , gaussian , positron , annihilation radiation , deformation (meteorology) , radiation , gaussian function , parabola , physics , positron annihilation , kinetic energy , intensity (physics) , nuclear physics , materials science , atomic physics , optics , classical mechanics , quantum mechanics , meteorology , electron
The influence of plastic deformation on the shape of the angular correlation of positron annihilation radiation has been studied for Al and Ag. The experimental curves were fitted to the sum of a parabola and a Gaussian under inclusion of the effective resolution function of the apparatus. The obtained results show that not only the intensity but also the width of the parabolic and Gaussian components are changed. Estimations in the manner proposed by H AUTOJÄRVI yield experimental values for the kinetic, potential and binding energy of positrons localized at dislocations.