Electron screening and kinetic-energy oscillations in a strongly coupled plasma.

Academic Article

Abstract

  • We study equilibration of strongly coupled ions in an ultracold neutral plasma produced by photoionizing laser-cooled and trapped atoms. By varying the electron temperature, we show that electron screening modifies the equilibrium ion temperature. Even with few electrons in a Debye sphere, the screening is well described by a model using a Yukawa ion-ion potential. We also observe damped oscillations of the ion kinetic energy that are a unique feature of equilibration of a strongly coupled plasma.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Chen YC; Simien CE; Laha S; Gupta P; Martinez YN; Mickelson PG; Nagel SB; Killian TC
  • Start Page

  • 265003
  • Volume

  • 93
  • Issue

  • 26 Pt 1