Positron Annihilation Study of Cs-Deficient Pollucite

16th International Conference on Positron Annihilation

Guagliardo, P.^1 ; Vance, E.R.^2 ; Sudarshan, K.^1 ; Davis, J.^2 ; Williams, J.F.^1 ; Ranganathaiah, C.^1 ; Samarin, S.^1

Centre for Antimatter-Matter Studies, School of Physics, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia^1

Institute for Materials Engineering, Australian Nuclear Science and Technology Organisation, Menai, NSW 2234, Australia^2

关键词: Non-stoichiometric;    o-Ps lifetime;    Pollucites;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/443/1/012015/pdf
DOI  :  10.1088/1742-6596/443/1/012015

来源: IOP

【 摘 要 】

Positron annihilation has been applied to study a series of non-stoichiometric pollucite samples with the composition Cs(1-x)Al(1-x)Si(2+x)O6for x = 0.0-0.25. Lifetime results showed a monotonic increase in the o-Ps lifetime and intensity as the Cs concentration was reduced. This is consistent with literature suppositions that vacancies are created as the Cs content is reduced.