Characterization of electrostatic shock in laser-produced optically-thin plasma flows using optical diagnostics

T. Morita, Y. Sakawa, Y. Kuramitsu, S. Dono, H. Aoki, H. Tanji, J. N. Waugh, C. D. Gregory, M. Koenig, N. C. Woolsey, H. Takabe

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Abstract

We present a method for evaluating the properties of electrostatic shock in laser-produced plasmas by using optical diagnostics. A shock is formed by a collimated jet in counter-streaming plasmas in nearly collisionless condition, showing the steepening of the transition width in time. In the present experiment, a streaked optical pyrometry was applied to evaluate the electron density and temperatures in the upstream and downstream regions of the shock so that the shock conditions are satisfied, by assuming thermal bremsstrahlung emission in optically thin plasmas. The derived electron densities are nearly consistent with those estimated from interferometry.

Original languageEnglish
Article number072701
JournalPhysics of Plasmas
Volume24
Issue number7
DOIs
Publication statusPublished - Jul 1 2017

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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