A remarkable increase of positron annihilation rate in supercritical fluid xenon

Tomonari Sumi, Hideo Sekino

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4 Citations (Scopus)


An anomalous increase of positron annihilation rare caused by a decrease of the temperature has been observed in supercritical fluid 4He along isochors by an experiment. By using a molecular simulation, we demonstrate the similar increase in supercritical fluid xenon at the temperature that is far away from the liquid-vapor phase transition. The phenomenon can be interpreted as a sudden clustering of xenon atom that is induced by a self-trapping of the positron.

Original languageEnglish
Pages (from-to)294-297
Number of pages4
JournalChemical Physics Letters
Issue number4-6
Publication statusPublished - May 27 2005


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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