Patrick McQuillen

Ion acoustic waves in ultracold neutral plasmas.

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.

Imaging the evolution of an ultracold strontium Rydberg gas

Clouds of ultracold strontium

Velocity Relaxation in a Strongly Coupled Plasma

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Creating and studying ion acoustic waves in ultracold neutral plasmas

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Ion temperature evolution in an ultracold neutral plasma

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High-resolution ionization of ultracold neutral plasmas

Rydberg atoms are created by two-photon excitation of laser-cooled

Ion holes in the hydrodynamic regime in ultracold neutral plasmas

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The role of collisions and strong coupling in ultracold plasmas

atoms. The spontaneous evolution of the cloud of low orbital angular momentum (low-

Demonstrating universal scaling for dynamics of Yukawa one-component plasmas after an interaction quench

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Emergence of kinetic behavior in streaming ultracold neutral plasmas

) Rydberg states towards an ultracold neutral plasma is observed by imaging resonant light scattered from core ions, a technique that provides both spatial and temporal resolution. Evolution is observed to be faster for the