Positron annihilation in lead

Positron annihilation in lead

The Doppler-broadening of the radiation from positrons annihilating in lead has been measured over the temperature range 4·2-600 K. The creation of mono-vacancies at the higher temperatures has been studied. On the basis of several hypotheses, including positron self-trapping and divacancy productio...

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Veröffentlicht in:Philosophical magazine. A, Physics of condensed matter. Defects and mechanical properties Physics of condensed matter. Defects and mechanical properties, 1978-11, Vol.38 (5), p.543-558
Hauptverfasser: Rice-evans, P., Chaglar, I., Khangi, F. A. R. El
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creator Rice-evans, P.
Chaglar, I.
Khangi, F. A. R. El
description The Doppler-broadening of the radiation from positrons annihilating in lead has been measured over the temperature range 4·2-600 K. The creation of mono-vacancies at the higher temperatures has been studied. On the basis of several hypotheses, including positron self-trapping and divacancy production, values of the monovacancy formation enthalpy have been estimated. The trapping of positrons by defects introduced by compression of the lead at 77 K has been investigated : complete annealing occurs before 300 K.
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title Positron annihilation in lead
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