Kinetic energy oscillations in annular regions of ultracold neutral plasmasS. Laha, Y. C. Chen, P. Gupta, C. E. Simien, Y. N. Martinez, P. G. Mickelson, S. B. Nagel and T. C. KillianEur. Phys. J. D, 40 1 (2006) 51-56DOI: https://doi.org/10.1140/epjd/e2006-00131-2