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gao_epr13-1.pdf2013-02-24 23:08:13Lan Gao

Global Magnetic Self-Organization at High Energy Densities

Author: Lan Gao
Requested Type: Consider for Invited
Submitted: 2013-01-14 14:45:48

Co-authors: P. M. Nilson, I. Igumenshchev, G. Fiksel, R. Yan, J. R. Davies, D. Martinez, V. Smalyuk, M. G. Haines, D. H. Froula, R. Betti, D. D. Meyerhofer

Contact Info:
Laboratory for Laser Energetics
250 East River Rd.
Rochester, NY   14623

Abstract Text:
While a decisive role is played in many astrophysical situations by strongly driven flows, the effect of these flows on magnetic self-organization and reconnection is unknown. Until now, direct measurements of global magnetic self-organization in strongly driven systems have not been obtained. In this talk, results from ablatively driven foil experiments on the Omega EP Laser Facility will be presented. The data show the generation of multiple local magnetic reconnection structures, seeded and forced by Rayleigh-Taylor (RT) instability growth. Self-similar behavior is observed in the growing cellular magnetic field structures. The data are quantitatively consistent with a bubble competition and merger model that predicts the RT modulation growth in real space, linking the cellular magnetic fields with the RT bubble and spike growth. These observations provide the first evidence for global magnetic self-organization at high energy densities.

Characterization: 4.0


University of Texas

Workshop on Exploratory Topics in Plasma and Fusion Research (EPR2013)
February 12-15, 2013
Fort Worth, Texas

EPR 2013