NDLI: Modeling and analysis of magnetic screening and other resistive sheath structure of wires in the Sanford effect range with improved conductivity models

Content Provider	IEEE Xplore Digital Library
Author	Cochran, F.L. Morse, R.L. Carroll, D.E.
Copyright Year	2000
Description	Author affiliation: Los Alamos Nat. Lab., NM, USA (Cochran, F.L.)
Abstract	Summary form only given, as follows. Because of array stability interest, individual Al wires in the range r=6 to 12 /spl mu/m and I/sub max/=8/spl times/10/sup 4/ to 1.6/spl times/10/sup 5/ Amp are studied by simulation with RAVEN and ALEGRA and by analysis, using I(t) forms of the Sandia Saturn generator both with and without prepulses. Qualitatively improved conductivities (/spl sigma/) are employed in the modeling. Radial motion of the expanded wires is found dominated by resistive quasi-static (RQS) magnetic field behavior (skin depths exceeding wire dimensions) because /spl sigma/ is greatly reduced by the Mott transition, giving approximately E/sub z/(r)=const. Then J(r) and Joule heating /spl sim//spl sigma/(r). The maximum current density, J/sub max/ moves from the core to the corona resulting in a screening of cores from Be and a drop in the voltage. A nearly hydrostatic balance with the RQS J/spl times/B forces is seen except when the rapidly rising current recompresses the wires.
File Size	81936
File Format	PDF
ISBN	0780359828
ISSN	07309244
DOI	10.1109/PLASMA.2000.854789
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic analysis Wires Stability analysis Analytical models Saturn Conductivity Magnetic fields Skin Heating Current density
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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