Atomization and merging of two Al and W wires driven by a 1 kA, 10 ns current pulse
Atomization and merging of two Al and W wires driven by a 1 kA, 10 ns current pulse
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由 1 kA、10 ns 电流脉冲驱动的两根铝线和钨线的雾化和合并
DOI：
10.1063/1.4967358
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发表时间：
2016-11
影响因子：
2.2
通讯作者：
Qiu Aici
中科院分区：
文献类型：
--
作者：
Wu Jian;Li Xingwen;Lu Yihan;Lebedev S. V.;Yang Zefeng;Jia Shenli;Qiu Aici
通过实验研究了用辅助小电流脉冲预处理金属丝阵列Z箍缩负载中金属丝的可能性。结果表明，在1 kA、10 ns的电流脉冲作用下，Al丝（1cm长、15 μm直径）和W丝（1cm长、15 μm直径、2 μm聚酰亚胺涂层）的全部长度和约70%的长度通过欧姆加热转变为气态。用双波长（532 nm和1064 nm）激光干涉法研究了以1-3 mm的间距定位的线的膨胀和合并。气化丝在真空中自由膨胀，不同时刻的密度分布可以用气体进入真空的膨胀解析模型来描述。在线材的原子化焓附近的能量沉积下，铝蒸气柱的膨胀速度为5-7 km/s，大于钨丝的0.44 km/s。还估算了钨在532 nm和1064 nm的动态原子极化率。
Possibility of preconditioning of wires in wire array Z-pinch loads by an auxiliary low-level current pulse was investigated in experiments with two aluminum or two polyimide-coated tungsten wires. It was found that the application of a 1 kA, 10 ns current pulse could convert all the length of the Al wires (1 cm long, 15 μm diameter) and ∼70% of length of the W wires (1 cm long, 15 μm diameter, 2 μm polyimide coating) into a gaseous state via ohmic heating. The expansion and merging of the wires, positioned at separations of 1–3 mm, were investigated with two-wavelength (532 nm and 1064 nm) laser interferometry. The gasified wire expanded freely in a vacuum and its density distribution at different times could be well described using an analytic model for the expansion of the gas into vacuum. Under an energy deposition around its atomization enthalpy of the wire material, the aluminum vapor column had an expansion velocity of 5–7 km/s, larger than the value of ∼4 km/s from tungsten wires. The dynamic atomic polarizabilities of tungsten for 532 nm and 1064 nm were also estimated.
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影响因子：
2.2
作者：
Yang Li;L. Sheng;Jian Wu;Xingwen Li;Jizhen Zhao;Mei Zhang;Yuan Yuan-Yuan;B. Peng
通讯作者：
Yang Li;L. Sheng;Jian Wu;Xingwen Li;Jizhen Zhao;Mei Zhang;Yuan Yuan-Yuan;B. Peng
DOI：
10.25560/9515
发表时间：
2012
期刊：
--
影响因子：
--
作者：
G. Swadling
通讯作者：
G. Swadling
影响因子：
2.9
作者：
G. Sarkisov;I. Beigman;V. Shevelko;K. Struve
通讯作者：
G. Sarkisov;I. Beigman;V. Shevelko;K. Struve
DOI：
10.1103/physreve.77.056406
发表时间：
2008-05
期刊：
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子：
--
作者：
G. Sarkisov;S. Rosenthal;K. Struve
通讯作者：
G. Sarkisov;S. Rosenthal;K. Struve
影响因子：
4.6
作者：
P. Molmud
通讯作者：
P. Molmud