Two-dimensional 2γ angular correlation study of delocalized positronium in alkali halides

Yasuyoshi Nagai, Haruo Saito, Yasuyuki Nagashima, Nobuhiko Kobayashi, Toshio Hyodo

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4 Citations (Scopus)


The two-dimensional angular correlation of positron annihilation radiation (2D-ACAR) from KCl and KI single crystals at low temperatures has been measured. The intensities of the narrow peaks resulting from the Bloch modulation of the delocalized positronium (Ps) are studied. The intensities of the peaks except for those at the momenta corresponding to the (000) and (200) reciprocal-lattice vectors are very low for both KCl and KI. The experimental results for KCl are compared with the calculations made by Zhang and Song. Calculations with simpler approximations are also performed for both KCl and KI.

Original languageEnglish
Pages (from-to)11239-11246
Number of pages8
JournalJournal of Physics Condensed Matter
Issue number50
Publication statusPublished - 1997 Dec 15
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics


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