A load structure with tailored density profile which delays the onset of the Rayleigh-Taylor instability development in imploding Z pinches by inverting acceleration of the magnetic field/plasma interface is proposed and studied numerically. This approach makes it possible to start gas-puff implosions from large radii (say, 8 cm) and produce significant K-shell yield with current pulse duration of 250 ns and longer. It could also be used to mitigate imprinting of initial perturbations into laser fusion targets.
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Cochran et al. (1996) studied this question.
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