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

C.E. Simien; P.G. Mickelson; P. Gupta; S.B. Nagel; S. Laha; T.C. Killian; Y.C. Chen; Y.N. Martinez

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

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arxiv physics/0310017 v1 pith:3XPJMLOP submitted 2003-10-02 physics.atom-ph physics.plasm-ph

C.E. Simien , Y.C. Chen , P. Gupta , S. Laha , Y.N. Martinez , P.G. Mickelson , S.B. Nagel , T.C. Killian This is my paper · ORCID

classification physics.atom-phphysics.plasm-ph

keywords absorptioncoupledequilibrationimagingionsneutralplasmaultracold

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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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