Abstract Numerical computation based on a zero-dimensional thin-plasma-shell model has been carried out to study the scaling of the maximum kinetic energy per unit length, the current amplitude and the compression ratio for the imploding Z-pinch liner driven by peaked current pulses. A dimensionless scaling constant of 0.9 with an error less than 10% is extracted at the optimal choice of the current and liner parameters. Deviation of the chosen experimental parameter from the optimal exerts a minor influence on the kinetic energy for wider-shaped and slower-decaying pulses, but the influence becomes significant for narrower-shaped and faster-decaying pulses. The computation is in reasonable agreement with experimental data from the Z, Saturn, Blackjack 5 and Qiangguang-I liners.
Received: 07 March 2003
Revised: 31 July 2003
Accepted manuscript online:
PACS:
52.58.Lq
(Z-pinches, plasma focus, and other pinch devices)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10035020).
Cite this article:
Zeng Zheng-Zhong (曾正中), Qiu Ai-Ci (邱爱慈) Numerical study of the scaling of the maximum kinetic energy per unit length for imploding Z-pinch liner 2004 Chinese Physics 13 201
[1]
X-ray observations of tungsten wire array Z-pinch implosions on QiangGuang-1 facility Zhang Fa-Qiang(章法强), Li Zheng-Hong(李正宏), Xu Ze-Ping(许泽平), Xu Rong-Kun(徐荣昆), Yang Jian-Lun(杨建伦), Guo Cun(郭存), Xia Guang-Xin(夏广新), Chen Jin-Chuan(陈进川), Song Feng-Jun(宋凤军), Ning Jia-Min(宁家敏), Wang Zhen(王真), Xue Fei-Biao(薛飞彪), Li Lin-Bo(李林波), Qin Yi(秦义), Ying Chun-Tong(应纯同), and Liu Guang-Jun(刘广均). Chin. Phys. B, 2006, 15(9): 2058-2064.
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