NDLI: Plasma properties of radial foil explosions on the cornell beam research accelerator

Content Provider	IEEE Xplore Digital Library
Author	Gourdain, P.-A. Blesener, I.C. Gorenstein, A.Y. Greenly, J.B. Hammer, D.A. Kim, J.E. Knapp, P.F. Kusse, B.R. Pang, B.H. Pikuz, S.A. Schrafel, P.C. Shelkovenko, T.C.
Copyright Year	2010
Description	Author affiliation: Cornell University Ithaca, NY 14850 USA (Gourdain, P.-A.; Blesener, I.C.; Gorenstein, A.Y.; Greenly, J.B.; Hammer, D.A.; Kim, J.E.; Knapp, P.F.; Kusse, B.R.; Pang, B.H.; Pikuz, S.A.; Schrafel, P.C.; Shelkovenko, T.C.)
Abstract	High energy density (HED) plasmas, produced by diverse techniques such as lasers or pulsed power generators, can help scientists in understanding extreme states of matter as well as astrophysical phenomena. Radial foil configurations are novel experiements which can yield plasma pressures on the order of 0.5 Mbar on a IMA, 100 ns current rise time generator such as the COrnel Beam Research Accelerator (COBRA). In this experimental set-up, a thin metallic foil stretched on a circular anode connects to a very small "pin" cathode (1mm in diameter). Radial currents run through the foil then down the pin cathode, thereby generating an axi-symmetric toroidal magnetic field. These currents interact with the B field and the resulting JxB force lifts the foil upward. Very rapidly the plasma turns into a bubble shaped cavity, which expands swiftly (v∼200-300 km/s), until instabilities destroy the axial symmetry, bursting the bubble open. As the cavity moves away from the cathode a dense central plasma column with electron densities above $10^{20}$ $cm^{−3}$ forms. The background plasma created by current ablation focuses on the geometrical axis, forming a jet moving at a speed of 100 km/s. Its electron density is larger than $10^{19}$ $cm^{−3}.$ This jet is collimated by magnetic fields, which confines its mass during a large portion of the discharge.
Starting Page	1
Ending Page	1
File Size	114412
Page Count	1
File Format	PDF
ISBN	9781424454747
ISSN	07309244
e-ISBN	9781424454761
e-ISBN	9781424454754
DOI	10.1109/PLASMA.2010.5534002
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma properties Explosions Particle beams Acceleration Plasma density Plasma accelerators Cathodes Laser beams Optical pulse generation Toroidal magnetic fields
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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