Positron annihilation in a single TiO2 crystal

D. Tsur*, M. Blau, M. Weger

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Positron annihilation in a single crystal of rutile (TiO2) is investigated by analysing the energies of the emitted gamma -rays. The anisotropy in the energy distribution for emission parallel and perpendicular to the crystal c axis is measured and found to be 2.3+or-0.3% for k=0, and it vanishes at k=3.7+or-0.3 mrad, where k is the resultant positron-electron momentum. The anisotropy is attributed to covalency of the oxygen 2p shell.

Original languageEnglish
Article number018
Pages (from-to)1257-1260
Number of pages4
JournalJournal of Physics C: Solid State Physics
Volume7
Issue number7
DOIs
StatePublished - 1974
Externally publishedYes

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