Laser-plasma diamagnetism in the presence of an ambient magnetized plasma
نویسنده
چکیده
This work is an experimental study of the diamagnetic cavity created by a dense laser-produced plasma ~initially, n lpp /n0@1) expanding into an ambient magnetized background plasma (n052 310 cm) capable of supporting Alfvén waves. The experiments are carried out on the upgraded Large Plasma Device @W. Gekelman, H. Pfister, Z. Lucky, J. Bamber, D. Leneman, and J. Maggs, Rev. Sci. Instrum. 62, 2875 ~1991!# at UCLA. Two-dimensional data of both the diamagnetic cavity as well as visible light emission are presented and found to be rich in structure with spatially similar characteristics. Laser-plasma diamagnetism has been observed to be relatively unaffected by the presence of a background plasma for n lpp /n0'10 at time of peak diamagnetism. © 2004 American Institute of Physics. @DOI: 10.1063/1.1628233#
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