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2001 | 99 | 3-4 | 465-472
Article title

Surfaces of Electron-Emitting Glasses Studied by a Slow Positron Beam

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Languages of publication
EN
Abstracts
EN
Semi-conducting glasses used for electron multipliers and microchannel plate devices are obtained by surface modification of Pb or Bi-reach silicon-based glasses. The reduced layer extends down to 200-500 nm, much more than the effective depth of the electron-emitting layer. By the use of slow-positron beam we monitor the structural changes undergoing in near-to-surface layers after isothermal annealing. The measurements suggest a possible correlation between secondary-electron emission coefficient and the Doppler-broadening S-parameter. On these samples there were also performed atomic force microscopy, secondary electron emission, differential scanning calorimetry, and electric conductivity measurements.
Keywords
EN
Contributors
author
  • Institute of Physics, Pedagogical University, Arciszewskiego 22B, 76-200 Słupsk, Poland
author
  • Faculty of Technical Physics and Applied Mathematics, Technical University, Narutowicza 11/12, 80-952 Gdańsk, Poland
author
  • Faculty of Technical Physics and Applied Mathematics, Technical University, Narutowicza 11/12, 80-952 Gdańsk, Poland
  • Faculty of Technical Physics and Applied Mathematics, Technical University, Narutowicza 11/12, 80-952 Gdańsk, Poland
author
  • Istituto Nazionale per la Fisica della Materia, Unita' di Trento, 38-050 Povo, Italy
author
  • Istituto Nazionale per la Fisica della Materia, Unita' di Trento, 38-050 Povo, Italy
author
  • Istituto Nazionale per la Fisica della Materia, Unita' di Trento, 38-050 Povo, Italy
author
  • Istituto Nazionale per la Fisica della Materia, Unita' di Trento, 38-050 Povo, Italy
References
  • 1. A.M. Then, C.G. Pantano, J. Non-Cryst. Solids, 120, 178, 1990
  • 2. K. Trzebiatowski, A. Witkowska, M. Chybicki, Polish Ceramic Bulletin, 19, 157, 1998
  • 3. A. Zecca, M. Bettonte, J. Paridaens, G.P. Karwasz, R.S. Brusa, Meas. Sci. Technol., 9, 409, 1998
  • 4. R.S. Brusa, G.P. Karwasz, N. Tiengo, A. Zecca, F. Corni, G. Ottaviani, R. Tonini, Phys. Rev. B, 61, 10154, 2000
  • 5. P. Ashoka-Kumar, K.G. Lynn, D.O. Welch, J. Appl. Phys., 76, 4935, 1994
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv99n323kz
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