Vibrational modes of a negative ion in liquid helium

V. Celli, Morrel H. Cohen, M. J. Zuckerman

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


A general expression is obtained for the breathing mode and the surface-distortion modes of a negative ion or electron bubble in liquid He4 at low temperatures. The electron is assumed to be in a spherical potential well of finite depth. The modes are damped because of the excitation of compressional waves in the surrounding fluid. Numerical calculations indicate that the breathing mode gives rise to a broad resonance in the vicinity of 1011 sec-1 and that there is a rather sharp quadrupole distortion mode with frequency varying from 1.6 × 1011 to 5.6 × 1011 sec-1 as the external pressure varies from 0 to 20 atm.

Original languageEnglish (US)
Pages (from-to)253-256
Number of pages4
JournalPhysical Review
Issue number1
StatePublished - 1968
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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