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VOLUME 42 (1985) | ISSUE 9 | PAGE 360
Coalescence of magnetic islands in a current sheet
A parameter which controls the change in the magnetic structure of a current sheet has been found experimentally. When the value of this parameter is below a threshold, the magnetic islands that arise during the onset of the tearing-mode instability move away from each other. In the opposite case, the islands coalesce, with the result that an extended current sheet is converted into a current filament.