Study on feasibility of variable energy slow-positron beams in characerization of arachidate Langmuir-Blodgett films

T. Marek, C. Szeles, É Kiss, A. Vértes, K. G. Lynn

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An extended set of arachidate Langmuir-Blodgett (LB-) films was studied by variable energy slow-positron beams. We studied the effect of the number of deposited monomolecular layers (MML), chemical composition, method of preparation and behaviour of the films in vacuum. The numeric analysis of the obtained S vs. E (W vs. E) curves showed that the method is capable to measure the thickness of the LB-films, and the measured Doppler-broadening parameters are sensitive to the chemical composition and the time spent in vacuum. The results confirmed the stability of salt-based LB-films in ultra-high vacuum (UHV) conditions and showed the desorption of pure acid films. Our results suggest that positron beams provide valuable complementary information to results obtained by other techniques.

Original languageEnglish
Pages (from-to)686-688
Number of pages3
JournalMaterials Science Forum
Volume255-257
DOIs
Publication statusPublished - Jan 1 1997

Keywords

  • Langmuir-Blodgett Films
  • Positron Annihilation Spectroscopy
  • Positron-Beams
  • Thermal Desorption

ASJC Scopus subject areas

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

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