Using Absorption Imaging to Study Ion Dynamics in an Ultracold Neutral Plasma

Details Using Absorption Imaging to Study Ion Dynamics in an Ultracold Neutral Plasma Using Absorption Imaging to Study Ion Dynamics in an Ultracold Neutral Plasma

2003-10-02

arxiv.org/abs/physics/0310017v1

Physics

Atomic Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.92.143001

We report optical absorption imaging of ultracold neutral plasmas.Images are used to measure the ion absorption spectrum, which is Doppler-broadened. Through the spectral width, we monitor ion equilibration in the first 250ns after plasma formation. The equilibration leaves ions on the border between the weakly coupled gaseous and strongly coupled liquid states. On a longer timescale of microseconds, we observe radial acceleration of ions resulting from pressure exerted by the trapped electron gas.

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