PL EN


Preferences help
enabled [disable] Abstract
Number of results
2001 | 99 | 3-4 | 321-328
Article title

A Study of Positron Properties in Quartz Crystals and Synthetic Silica Glass

Content
Title variants
Languages of publication
EN
Abstracts
EN
The monoenergetic positron beamline "SPONSOR" at Rossendorf has been used to investigate the positron behaviour in a naturally grown Brasilian quartz, two synthetic quartz crystals of different origin, and synthetic silica glass. The measurements allow us to obtain the positron diffusion length of free positrons and Bloch para-positronium, if formed, in these materials. In addition, hydrothermal treatment of a synthetic quartz has been used to introduce hydrogen into the crystal up to a certain depth. The presence of hydrogen is found to influence the formation of para-positronium. The depth distribution of hydrogen has been measured independently by nuclear reaction analysis, and will be discussed in comparison with the results deduced from the positron studies.
Keywords
EN
Contributors
author
  • Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Rossendorf, Postfach 51 01 19, 01314 Dresden, Germany
author
  • Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Rossendorf, Postfach 51 01 19, 01314 Dresden, Germany
author
  • Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
author
  • Institut für Kernphysik, Universität Frankfurt, August-Euler-Str. 6, 60486 Frankfurt/Main, Germany
author
  • Institut für Kernphysik, Universität Frankfurt, August-Euler-Str. 6, 60486 Frankfurt/Main, Germany
References
  • 1. M. Hasegawa, M. Saneyasu, M. Tabata, Z. Tang, Y. Nagi, T. Chiba, Y. Ito, Nucl. Instrum. Methods B, 166-167, 431, 2000
  • 2. G. Brauer, G. Boden, A. Balogh, A. Andreeff, Appl. Phys., 16, 231, 1978
  • 3. M. Saneeyasu, M. Hasegawa, Z. Tang, M. Tabata, M. Fujinami, Y. Ito, S. Yamaguchi, Mater. Sci. Forum, 255-257, 460, 1997
  • 4. M. Fujinami, N.B. Chilton, K. Ishii, Y. Ohki, J. Phys. IV (France), 3, 169, 1993
  • 5. W. Anwand, H.-R. Kissener, G. Brauer, Acta Phys. Pol. A, 88, 7, 1995
  • 6. D. Endisch, H. Sturm, F. Rauch, Nucl. Instrum. Methods B, 84, 380, 1994
  • 7. A. van Veen, H. Schut, J. de Vries. R.A. Hakvoort, M.R. Ijpma, in: Positron Beams for Solids and Surfaces, Eds. P.J. Schultz, G.R. Massoumi, P.J. Simpson, AIP Conf. Proc., Vol. 218, American Institute of Physics, New York 1990, p. 171
  • 8. O. Dersch, F. Rauch, Fresenius J. Anal. Chem., 365, 114, 1999
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv99n302kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.