Radiation characteristics and implosion dynamics of tungsten wire array Z-pinches on the YANG accelerator

被引：0

作者：

黄显宾 ^{[1
]}

杨礼兵 ^{[1
]}

李晶 ^{[1
]}

周少彤 ^{[1
]}

任晓东 ^{[1
]}

张思群 ^{[1
]}

但加坤 ^{[1
]}

蔡红春 ^{[1
]}

段书超 ^{[1
]}

陈光华 ^{[1
]}

章征伟 ^{[1
]}

欧阳凯 ^{[1
]}

李军 ^{[1
]}

张朝辉 ^{[1
]}

周荣国 ^{[1
]}

王贵林 ^{[1
]}

机构：

[1] Institute of Fluid Physics,China Academy of Engineering Physics

来源：

Chinese Physics B | 2012年 / 21卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Z-pinch; tungsten wire array; X-ray radiation; implosion dynamics;

D O I：

暂无

中图分类号：

O53 [等离子体物理学];

学科分类号：

070204 ;

摘要：

We investigated the radiation characteristics and implosion dynamics of low-wire-number cylindrical tungsten wire array Z-pinches on the YANG accelerator with a peak current 0.8-1.1 MA and a rising time ～ 90 ns.The arrays are made up of(8-32)×5 μm wires 6/10 mm in diameter and 15 mm in height.The highest X-ray power obtained in the experiments was about 0.37 TW with the total radiation energy ～ 13 kJ and the energy conversion efficiency ～ 9%(24×5 μm wires,6 mm in diameter).Most of the X-ray emissions from tungsten Z-pinch plasmas were distributed in the spectral band of 100-600 eV,peaked at 250 and 375 eV.The dominant wavelengths of the wire ablation and the magneto-Rayleigh-Taylor instability were found and analyzed through measuring the time-gated self-emission and laser interferometric images.Through analyzing the implosion trajectories obtained by an optical streak camera,the run-in velocities of the Z-pinch plasmas at the end of the implosion phase were determined to be about(1.3-2.1)×10 7 cm/s.

引用

页码：414 / 421

页数：8

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