Positron Annihilation in Materials under Ionizing Radiation
- 15 May 1966
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 44 (10) , 4007-4009
- https://doi.org/10.1063/1.1726563
Abstract
Positron-annihilation lifetime spectra in tritiated water and ice are described, and the effect of irradiation products on positron-annihilation rates in a medium is estimated. In a liquid medium the interference mainly comes from stable products accumulated during irradiation and in a solid medium from free radicals frozen in the lattice. It is also indicated that care must be taken in preparing samples for positron-annihilation experiments to avoid excessive radiation damage to the medium by the positron source.Keywords
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