Ab initio investigation of helium bubble formation from trapped He+ ions in solid hydrogen

R. H. Scheicher, T. P. Das, K. Ishida, T. Matsuzaki, S. N. Nakamura, N. Kawamura, K. Nagamine

Research output: Contribution to journalArticlepeer-review

Abstract

We are involved in a program aimed at a first-principles examination of the possibility of helium bubble formation in solid hydrogen. Our procedure is based on an extension of the Hartree-Fock cluster approach that we have been using for study of individual He+ ions in solid hydrogen. The preliminary results of our cluster investigations of a particular configuration of two He+ ions in neighboring tetrahedral interstitial positions are presented here. It has been found that the hydrogen molecules common to the two He+ ions lead to a substantial attractive force between the ions that almost overcomes their inherent repulsion, leading to a binding energy for this configuration only slightly less than the binding energy for two well separated trapped He+ ions. The analysis of our results have suggested future investigations of different pairs of trapping sites which appear to be more favorable for providing higher binding energies for the He+ pairs.

Original languageEnglish
Pages (from-to)431-434
Number of pages4
JournalHyperfine Interactions
Volume138
Issue number1-4
DOIs
Publication statusPublished - 2001
Externally publishedYes

Keywords

  • Bubble formation
  • He in solid hydrogen
  • Muon catalyzed fusion

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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