Optic-type vibrational modes of liquid chalcogens

Ayano Chiba, Yoshinori Ohmasa, Makoto Yao, Stephen M. Bennington

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We carried out inelastic neutron scattering (INS) measurements to study the dynamic structure of liquid (l-) Se and Te50Se50. The bond-stretching modes for both liquids were found to lie in higher energies than those forming a trigonal phase, showing that the chainlike molecules are more isolated than in the trigonal phase. The Q-dependence of the intensity of the dynamic structure factor was examined at the region of the stretching modes, and found to be explained by a simple model where we assumed completely out-of-phase motions of two atoms. The result shows the possibilities of extracting short-range structural information from such Q-dependences for these kinds of basically isolated molecules.

Original languageEnglish
Pages (from-to)301-304
Number of pages4
JournalJournal of Neutron Research
Volume12
Issue number4
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • Dynamic structure factor
  • Inelastic neutron scattering
  • Liquid chalcogens
  • Optic-type mode
  • Selenium
  • Tellurium

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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