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1993 | 83 | 3 | 267-271
Article title

Positron Annihilation in Tektite and Hyalite

Content
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Languages of publication
EN
Abstracts
EN
Positron lifetime spectra as well as one-dimensional angular distributions of photons coming from the two-photon annihilation of an electron-positron pair were measured at room temperature for samples of natural tektite and hyalite. The data were used for estimation of positronium characteristics in the specimens. The characteristics were analysed in terms of parameters of pores trapping the positronium atoms before their decay. In the analysis two models of the traps were taken into account, i.e. the square potential wells of spherical symmetry with barriers of finite and infinite heights. It was found that the linear dimensions of the pores resulting from these two-trap models are almost the same and they are of the order of 1 nm.
Keywords
EN
Year
Volume
83
Issue
3
Pages
267-271
Physical description
Dates
published
1993-03
References
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv83z305kz
Identifiers
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