Ion Acoustic Waves in Ultracold Neutral Plasmas

Details Ion Acoustic Waves in Ultracold Neutral Plasmas Ion Acoustic Waves in Ultracold Neutral Plasmas

2010-05-25

arxiv.org/abs/1005.4670v1

Physics

Plasma Physics

4 pages, 4 figures

Scientific paper

We photoionize laser-cooled atoms with a laser beam possessing spatially periodic intensity modulations to create ultracold neutral plasmas with controlled density perturbations. Laser-induced fluorescence imaging reveals that the density perturbations oscillate in space and time, and the dispersion relation of the oscillations matches that of ion acoustic waves, which are long-wavelength, electrostatic, density waves.

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