Nunomura, S. ; Goree, J. ; Hu, S. ; Wang, X. ; Bhattacharjee, A. ; Avinash, K. (2002) Phonon spectrum in a plasma crystal Physical Review Letters, 89 (3). Article ID 035001. ISSN 0031-9007
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Official URL: http://journals.aps.org/prl/abstract/10.1103/PhysR...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.89.035001
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
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 102913 |
| Deposited On: | 09 Mar 2018 10:45 |
| Last Modified: | 09 Mar 2018 10:45 |
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