PL EN


Preferences help
enabled [disable] Abstract
Number of results
2001 | 99 | 3-4 | 379-384
Article title

Liquation of Vycor Glasses - Study by Positron Annihilation Lifetime Method

Content
Title variants
Languages of publication
EN
Abstracts
EN
Two Vycor glasses of different percentages of the components were liquated between 725 K and 950 K and leached in order to produce pores. Little intermolecular voids characterized by ortho-positronium lifetime valueτ_2≈1.5 ns were observed simultaneously. At the first stage of pore formation the intensity I_2 decreased considerably for both glasses, while at liquation temperatures higher than 825 K it increased again. The increase in I_2 resulted from changes in the properties of the bulk material. The growth ofτ_2 in this range of temperatures was also observed.
Keywords
EN
Contributors
author
  • Institute of Physics, Maria Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland
author
  • Department of Chemical Physics, Faculty of Chemistry, Maria Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 3, 20-031 Lublin, Poland
author
  • Department of Chemical Physics, Faculty of Chemistry, Maria Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 3, 20-031 Lublin, Poland
References
  • 1. Y.C. Jean, in: Positron Spectroscopy of Solids, Eds. A. Dupasquier, A.P. Mills Jr., IOS Pub., Amsterdam 1995, p. 563
  • 2. S.J. Tao, J. Chem. Phys., 56, 5499, 1979
  • 3. M. Eldrup, D. Lightbody, J.N. Sherwood, Chem. Phys., 63, 51, 1981
  • 4. B. Jasińska, A.E. Kozioł, T. Goworek, J. Radioanal. Nucl. Chem., 210, 617, 1996
  • 5. K. Ciesielski, A.L. Dawidowicz, T. Goworek, B. Jasińska, J. Wawryszczuk, Chem. Phys. Lett., 289, 41, 1998
  • 6. Y. Kobayashi, W. Zheng, E.F. Meyer, J. McGervey, A. Jamieson, Macromolecules, 22, 2302, 1989
  • 7. T. Goworek, C. Rybka, J. Wawryszczuk, Phys. Status Solidi B, 89, 253, 1978
  • 8. W. Brandt, R. Paulin, Phys. Rev. Lett., 21, 193, 1968
  • 9. K. Venkateswaran, K.L. Cheng, Y.C. Jean, J. Phys. Chem., 88, 2465, 1984
  • 10. J. Kansy, Nucl. Instrum. Methods A, 374, 235, 1996
  • 11. B. Jasińska, A.L. Dawidowicz, T. Goworek, Phys. Chem. Chem. Phys., 2, 3269, 2000
  • 12. B. Jasińska, A.L. Dawidowicz, Mater. Sci. Forum, to be published
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv99n311kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.