Temperature dependence of positron annihilation in iron and vanadium |
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| Authors: | C W Schulte J L Campbell and J A Jackman |
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| Institution: | (1) Physics Department, University of Guelph, N1G 2W1 Guelph, Ontario, Canada |
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| Abstract: | The Doppler broadened lineshape is measured as a function of temperature for iron and vanadium; vacancies produce a strong
trapping effect in γ-Fe, but a weak effect in V. Threshold temperaturesT
t for trapping are 1280±25 and 1370±30 K. Empirical linear relationships betweenT
t
, self-diffusion energyQ
SD
and monovacancy formation energyH
1v
F
are discussed and used to determineH
1v
F
values for γ-Fe and V. |
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| Keywords: | 78 70 |
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