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Electronic detection of collective modes of an ultracold plasma
K. A. Twedt, S. L. Rolston
Using a new technique to directly detect current induced on a nearby electrode, we measure plasma oscillations in ultracold plasmas, which are influenced by the inhomogeneous and t…
Electron Evaporation from an Ultracold Plasma in a Uniform Electric Field
K. A. Twedt, S. L. Rolston
Electrons in an expanding ultracold plasma are expected to be in quasi-equilibrium, since the collision times are short compared to the plasma lifetime, yet we observe electrons ev…
Observation of an ultracold plasma instability
X. L. Zhang, R. S. Fletcher, S. L. Rolston
We present the first observation of an instability in an expanding ultracold plasma. We observe periodic emission of electrons from an ultracold plasma in weak, crossed magnetic an…
Using Charged Particle Imaging to Study Ultracold Plasma Expansion
X. L. Zhang, R. S. Fletcher, S. L. Rolston
We develop a projection imaging technique to study ultracold plasma dynamics. We image the charged particle spatial distributions by extraction with a high-voltage pulse onto a pos…
Ultracold Plasma Expansion in a Magnetic Field
X. L. Zhang, R. S. Fletcher, S. L. Rolston +2
We measure the expansion of an ultracold plasma across the field lines of a uniform magnetic field. We image the ion distribution by extracting the ions with a high voltage pulse o…
Plasma Oscillations and Expansion of an Ultracold Neutral Plasma
S. Kulin, T. C. Killian, S. D. Bergeson +1
We report the observation of plasma oscillations in an ultracold neutral plasma. With this collective mode we probe the electron density distribution and study the expansion of the…