First direct measurement of optical phonons in 2D plasma crystals
Plasma Physics
2015-05-13 v1
Abstract
Spectra of phonons with out-of-plane polarization were studied experimentally in a 2D plasma crystal. The dispersion relation was directly measured for the first time using a novel method of particle imaging. The out-of-plane mode was proven to have negative optical dispersion, comparison with theory showed good agreement. The effect of the plasma wakes on the dispersion relation is briefly discussed.
Keywords
Cite
@article{arxiv.0907.5145,
title = {First direct measurement of optical phonons in 2D plasma crystals},
author = {L. Couëdel and V. Nosenko and S. K. Zhdanov and A. V. Ivlev and H. M. Thomas and G. E. Morfill},
journal= {arXiv preprint arXiv:0907.5145},
year = {2015}
}
Comments
submitted to Physical Review Letters