Dissociative recombination of antiprotonic atomcules p̄He+ with positronium: Towards antihydrogen synthesis?

Sébastien Sauge, Pierre Valiron, István Mayer

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Abstract

We investigate the reactive association of metastable antiprotonic helium 'atomcules' ([p̄He+]nl) with positronium(Ps). In the framework of the Born-Oppenheimer approximation, we further discuss the evolution and stability of the intermediate complex (α, p̄, e+, 2e-) using a classical trajectory approach for treating the nuclei (α, p̄). We predict two possible channels for the atomcule-Ps reaction depending upon the atomcule principal quantum number n:n≥38 states dissociate to H̄, whereas, n<38 states form a new class of metastable atomcules, which could be confirmed by laser spectroscopy. The present work illustrates the pertinence of simple chemical physics concepts to the study of exotic processes involving antimatter.

Original languageEnglish
Pages (from-to)330-336
Number of pages7
JournalChemical Physics Letters
Volume334
Issue number4-6
DOIs
Publication statusPublished - Feb 9 2001

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ASJC Scopus subject areas

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

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