Laser-Driven Magnetic-Flux Compression in High-Energy-Density Plasmas
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Gotchev-2009-Laser-Driven Magnetic-Flux Compression in High-Energy-Density Plasmas.pdf
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Author(s)
Gotchev, O. V.
Chang, P. Y.
Knauer, J. P.
Meyerhofer, D. D.
Polomarov, O.
Li, C. K.
Manuel, Mario J.-E.
Petrasso, Richard D.
Seguin, Fredrick Hampton
Betti, R.
Date Issued
November 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Gotchev, O. V. et al. “Laser-Driven Magnetic-Flux Compression in High-Energy-Density Plasmas.” Physical Review Letters 103.21 (2009): 215004. © 2009 The American Physical Society
Version
Final published version
Abstract
The demonstration of magnetic field compression to many tens of megagauss in cylindrical implosions of inertial confinement fusion targets is reported for the first time. The OMEGA laser [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] was used to implode cylindrical CH targets filled with deuterium gas and seeded with a strong external field (>50 kG) from a specially developed magnetic pulse generator. This seed field was trapped (frozen) in the shock-heated gas fill and compressed by the imploding shell at a high implosion velocity, minimizing the effect of resistive flux diffusion. The magnetic fields in the compressed core were probed via proton deflectrometry using the fusion products from an imploding D[subscript 3]He target. Line-averaged magnetic fields between 30 and 40 MG were observed.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.103.215004
