Effect of Wire Diameter and Addition of an Axial Magnetic Field on the Dynamics of Radial Wire Array $Z$-Pinches
Effect of Wire Diameter and Addition of an Axial Magnetic Field on the Dynamics of Radial Wire Array $Z$-Pinches
复制标题
线径和附加轴向磁场对径向线阵列 $Z$ 箍缩动力学的影响
DOI：
10.1109/tps.2009.2036730
复制
发表时间：
2010
影响因子：
1.5
通讯作者：
Andrea Ciardi
中科院分区：
文献类型：
--
作者：
F. Suzuki;S. Lebedev;S. Bland;G. Hall;A. Harvey;J. Chittenden;A. Marocchino;S. Bott;J. Palmer;Andrea Ciardi
研究了1 mA 250 ns电流脉冲驱动径向线阵Z箍缩的工作原理。阴极直径和导线直径的变化不影响整个等离子体动力学，但控制着导线断裂的时间和夹点形成的时间。用测得的阴极全丝烧蚀次数来确定烧蚀速度(VABL)，得到VABL~(丝径)标度为-0.46。外加轴向磁场的实验表明，收缩的等离子体直径增大，这可能是由于内爆等离子体对轴向磁通量的压缩。
The operation of radial wire array Z-pinches driven by a 1-MA 250-ns current pulse was studied. Variation in the cathode diameter and wire diameter does not affect the overall plasma dynamics but controls the time of wire breakage and the time of pinch formation. The measured times of full wire ablation at the cathode were used to determine the ablation velocity (V abl), and the results give a scaling V abl ~ (wire diameter)-0.46. Experiments with added axial magnetic field show an increase in the pinched plasma diameter, possibly due to the compression of the axial magnetic flux by the imploding plasma.