High resolution Raman study of the two-roton bound state

C. A. Murray, R. L. Woerner, T. J. Greytak

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


A high resolution study has been made of the two-roton Raman scattering from liquid 4He at T=0.6K and SVP. This experiment shows conclusively that roton-roton interactions are necessary to explain the spectrum. From the shape of the two-roton peak the two-roton binding energy is estimated to be 0.22+or-0.07K. An intrinsic zero temperature linewidth of the pair equal to 0.11+or-0.01K has been found.

Original languageEnglish (US)
Article number003
Pages (from-to)L90-L94
JournalJournal of Physics C: Solid State Physics
Issue number6
StatePublished - 1975
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • General Engineering
  • General Physics and Astronomy


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