Positronium interactions in synthetic zeolites: Effect of adsorbed water

L. Liszkay, Zs Kajcsos, G. Duplâtre, K. Lázár, G. Pál-Borbély, H. K. Beyer

Research output: Contribution to journalConference article

15 Citations (Scopus)

Abstract

Synthetic Na-mordenite and Na-Y zeolites were studied by means of positron lifetime measurements and extended Doppler spectroscopy. From the lifetime and Doppler parameters (parapositronium peak, 3γ-annihilation ratio etc.) the influence of water on the formation and annihilation of orthopositronium o-Ps in the channels and cages was investigated. A comparison with thermogravimetry (TG) measurements has shown that the long-lived (o-Ps) component appears already at relatively high water content. The reversible temperature dependence at elevated temperatures might indicate thermal equilibrium of o-Ps with the zeolite lattice.

Original languageEnglish
Pages (from-to)377-379
Number of pages3
JournalMaterials Science Forum
Volume363-365
DOIs
Publication statusPublished - Jan 1 2001
Event12th International Conference on Positron Annihilation - Munchen, Germany
Duration: Aug 6 2000Aug 12 2000

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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