Competitive positron and positronium trapping in porous media

Zs Kajcsos, L. Liszkay, G. Duplâtre, K. Lázár, L. Lohonyai, L. Varga, P. M. Gordo, A. P. de Lima, C. Lopes de Gil, M. F. Ferreira Marques, D. Bosnar, S. Bosnar, C. Kosanovic, B. Subotic

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Positron annihilation acquired acceptance for structural investigation of solids but results in porous media-where positron lifetime spectroscopy (LT) reveals substantial Ps formation-were ambiguous. Data on zeolites lead to the conclusion that Ps trapping in competing "extended free volume" sites, inhomogeneous regions and grain boundaries occurs. Furthermore, positron trapping must also be considered. Systematic errors due to incomplete time range selection are discussed, significance and importance of corrections for 3γ/2γ counting efficiency differences are shown in practice.

Original languageEnglish
Pages (from-to)231-236
Number of pages6
JournalRadiation Physics and Chemistry
Volume76
Issue number2
DOIs
Publication statusPublished - Feb 1 2007

Keywords

  • Long-living o-Ps states
  • Positron annihilation in zeolites
  • Positronium trapping

ASJC Scopus subject areas

  • Radiation

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  • Cite this

    Kajcsos, Z., Liszkay, L., Duplâtre, G., Lázár, K., Lohonyai, L., Varga, L., Gordo, P. M., de Lima, A. P., Lopes de Gil, C., Ferreira Marques, M. F., Bosnar, D., Bosnar, S., Kosanovic, C., & Subotic, B. (2007). Competitive positron and positronium trapping in porous media. Radiation Physics and Chemistry, 76(2), 231-236. https://doi.org/10.1016/j.radphyschem.2006.03.041