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2014 | 125 | 3 | 821-824
Article title

The Evidence of Quasi-Free Positronium State in GiPS-AMOC Spectra of Glycerol

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EN
Abstracts
EN
We present the results of processing of age-momentum correlation spectra that were measured for glycerol by the gamma-induced positron spectroscopy facility. Our research has shown that the shape of experimental s(t) curve cannot be explained without introduction of the intermediate state of positronium (Ps), called quasi-free Ps. This state yields the wide Doppler line near zero lifetimes. We discuss the possible properties of this intermediate Ps state from the viewpoint of developed model. The amount of annihilation events produced by quasi-free Ps is estimated to be less than 5% of total annihilations. In the proposed model, quasi-free Ps serves as a precursor for trapped Ps of para- and ortho-states.
Keywords
Contributors
  • Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218, Moscow, Russia
  • Moscow Engineering and Physics Institute, Dept. of Extreme States of Condensed Media, 115409, Moscow, Russia
author
  • Institute of Radiation Physics, Helmholtz-Zentrum, Dresden-Rossendorf P.O. Box 510119, 01314, Dresden, Germany
author
  • Institute of Radiation Physics, Helmholtz-Zentrum, Dresden-Rossendorf P.O. Box 510119, 01314, Dresden, Germany
  • Martin-Luther-University Halle-Wittenberg, Dept. of Physics, 06099, Halle, Germany
author
  • Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218, Moscow, Russia
  • Moscow Engineering and Physics Institute, Dept. of Extreme States of Condensed Media, 115409, Moscow, Russia
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv125n336kz
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