The binding of alkali atoms to the surfaces of liquid helium and hydrogen

F. Ancilotto, E. Cheng, Milton Walter Cole, F. Toigo

Research output: Contribution to journalArticle

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Abstract

Alkali atoms have been shown previously to have only unstable binding states inside liquid4He. We calculate the equilibrium configurations and binding energies of single alkali atoms near the liquid-vapor interface of4He and3He. A simple interface model is used to predict the surface deformation due to the presence of the atoms. A more realistic density functional model yields somewhat higher energies in the case of4He. For all alkali atoms, we find the surface binding energies to be around 10 to 20 K. A similar analysis with atom-H2 interactions finds that alkali atoms tend to submerge into liquid H2, with the exception of Li.

Original languageEnglish (US)
Pages (from-to)323-329
Number of pages7
JournalZeitschrift für Physik B Condensed Matter
Volume98
Issue number3
DOIs
StatePublished - Sep 1 1995

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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