Surface positron and positronium states in real ionic crystals

K. P. Aref'ev, S. A. Vorob'ev, E. P. Prokop'ev, V. G. Starodubov

Research output: Contribution to journalArticlepeer-review


Positron annihilation has been used to examine the positron and positronium states at the surfaces of (100) and (110) faces of KCl and KCl-5% AgCl single crystals. The measured and theoretical parameters differ from the analogous bulk values; exposure of KCl to Ps atoms produces mainly A+′, F+′, and D+′ centers. It is shown that this method can be used to examine surface states and surface electron-density distributions.

Original languageEnglish
Pages (from-to)61-65
Number of pages5
JournalSoviet Physics Journal
Issue number1
Publication statusPublished - Jan 1978

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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