A coupled channel study on a binding mechanism of positronic alkali atoms

Yoshihiro Kubota, Yasushi Kino

研究成果: Article査読

7 被引用数 (Scopus)

抄録

In order to investigate the binding mechanism of weakly bound states of positronic alkali atoms, we calculate the energies and wavefunctions using the Gaussian expansion method (GEM) where a positronium (Ps)-alkali ion channel and a positron-alkali atom channel are explicitly introduced. The energies of the bound states are updated using a model potential that reproduces well the observed energy levels of alkali atoms. The binding mechanism of the positronic alkali atom is analyzed by the wavefunctions obtained. The structure of the positronic alkali atom has been regarded as a Ps cluster orbiting the alkali ion, which is described by the Ps-alkali ion channel. We point out that the fraction having the positron-alkali atom configuration is small but plays an indispensable role for the weakly bound system.

本文言語English
論文番号023038
ジャーナルNew Journal of Physics
10
DOI
出版ステータスPublished - 2008 2 25

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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