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2005 | 107 | 4 | 642-650
Article title

Role of Trapped and Solvated Electrons in Ps Formation

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Abstracts
EN
Role of trapped and solvated electrons in Ps formation is discussed. Combination of thermalized positron with such electrons is possible from the viewpoint of the energy balance and may results in Ps formation. This process proceeds during all e^+ lifetime in matter. Fitting of raw experimental e^+ - e^- annihilation spectra has to be based on an adequate physical input, which often leads to necessity of nonexponential deconvolution of the spectra. We have interpreted the Ps formation data in polyethylene, ethylene-methylmethacrylate and polymethylmethacrylate in dark and in light vs. time of the measurement and temperature. Parameters characterized accumulation of trapped electrons and their recombination with counter ions and positrons are obtained.
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Contributors
author
  • Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
author
  • Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
author
  • Photonics Research Institute, AIST, Umezono 1-1-1, Tsukuba, Ibaraki 305-8568, Japan
author
  • Japan Atomic Energy Research Institute, 319-1195 Tokai, Japan
author
  • Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
References
  • 1. O.E. Mogensen, Positron Annihilation in Chemistry, Springer-Verlag, Berlin 1995
  • 2. S.V. Stepanov, V.M. Byakov, in: Principles and Applications of Positron and Positronium Chemistry, Eds. Y.C. Jean, P.E. Mallone, D.M. Schrader, World Scientific Publ., Singapore 2003, p. 117
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  • 5. C. He, T. Suzuki, V.P. Shantarovich, L. Ma, M. Matsuo, K. Kondo, Y. Ito, Phys. Lett. A, 313, 223, 2003
  • 6. T. Hirade, Radiat. Phys. Chem., 68, 375, 2003
  • 7. N. Suzuki, T. Hirade, F. Saito, T. Hyodo, Radiat. Phys. Chem., 68, 647, 2003
  • 8. T. Suzuki, C. He, V. Shantarovich, K. Kondo, E. Hamada, M. Matsuo, L. Ma, Y. Ito, Radiat. Phys. Chem., 66, 161, 2003
  • 9. C. He, T. Suzuki, L. Ma, M. Matsuo, V.P. Shantarovich, K. Kondo, Y. Ito, Phys. Lett. A, 304, 49, 2002
  • 10. Dauwe, B. Van Waeyenberge, N. Balcaen, Phys. Rev. B, 68, 132202, 2003
  • 11. Ito, T. Suzuki, Radiat. Phys. Chem., 66, 343, 2003
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n414kz
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