IMPLOSION SYMMETRY AND BURN EFFICIENCY IN ICF

被引:21
作者
ATZENI, S
机构
[1] Associazione EURATOM-ENEA sulla Fusione, Centro Ricerche Energia Frascati, 00044, Frascati
关键词
D O I
10.1017/S026303460000330X
中图分类号
O59 [应用物理学];
学科分类号
摘要
The effect of long-wavelength irradiation nonuniformities on the performance of single-shell, reactor targets is investigated by means of 2-D numerical simulations. The stages of target collapse, hot-spot formation, ignition, and burn are illustrated. Evidence is shown for the occurrence of the Rayleigh-Taylor instability during target stagnation. It is then shown that the sensitivity of a given family of targets to the nonuniformities of the driving pressure critically depended on the 1-D ignition margin and on the spark convergence ratio of the target. The tolerable levels of nonuniformity as a function of the perturbation mode number are determined, for selected targets, by means of a parametric numerical study.
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页码:233 / 245
页数:13
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