Abstract
Enhanced implosion stability has been experimentally demonstrated for magnetically accelerated liners that are coated with of dielectric. The dielectric tamps liner-mass redistribution from electrothermal instabilities and also buffers coupling of the drive magnetic field to the magneto-Rayleigh-Taylor instability. A dielectric-coated and axially premagnetized beryllium liner was radiographed at a convergence ratio [] of 20, which is the highest CR ever directly observed for a strengthless magnetically driven liner. The inner-wall radius displayed unprecedented uniformity, varying from 95 to over the 4.0 mm axial height captured by the radiograph.
- Received 12 August 2015
DOI:https://doi.org/10.1103/PhysRevLett.116.065001
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