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Investigation of the effect of temperature on the positron annihilation in solid and liquid tin
Author(s) -
Rudzinska W.,
Szymanski Cz.,
Chabik S.,
Rozenfeld B.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170221122
Subject(s) - tin , positron annihilation , annihilation , melting point , vacancy defect , melting temperature , kinetics , positron , activation energy , materials science , condensed matter physics , thermodynamics , physics , chemistry , nuclear physics , metallurgy , composite material , quantum mechanics , electron
Abstract The temperature dependence of the counting rate, F ( T ), has been measured in tin. A sudden increase in the counting rate, connected with the creation of vast defects acting as positron traps, has been observed on passing through the melting point. Both the F ( T ) and angular correlation curves indicate that the defected areas decay with increasing temperature. The kinetics of this effect has been discussed and the vacancy formation energy, being equal to E ν = 0.50 ± 0.02 eV, has been determined.