Journal article
Phonon spectrum in a plasma crystal
Physical review letters, Vol.89(3), pp.035001-350014
07/15/2002
DOI: 10.1103/PhysRevLett.89.035001
PMID: 12144397
Abstract
The Fourier spectra of longitudinal and transverse waves corresponding to random particle motion were measured in a two-dimensional plasma crystal. The crystal was composed of negatively charged microspheres immersed in a plasma at a low gas pressure. The phonons were found to obey a dispersion relation that assumes a Yukawa interparticle potential. The crystal was in a nonthermal equilibrium, nevertheless phonon energies were almost equally distributed with respect to wave number over the entire first Brillouin zone.
Details
- Title: Subtitle
- Phonon spectrum in a plasma crystal
- Creators
- S Nunomura - Max Planck SocietyJ Goree - University of IowaS Hu - University of IowaX Wang - University of IowaA Bhattacharjee - University of IowaK Avinash - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.89(3), pp.035001-350014
- DOI
- 10.1103/PhysRevLett.89.035001
- PMID
- 12144397
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Language
- English
- Date published
- 07/15/2002
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199756302771
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