用X-pinch对双丝Z箍缩进行轴向X射线背光照相?

物理学报

用X-pinch对双丝Z箍缩进行轴向X射线背光照相?

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赵屾, 朱鑫磊, 石桓通, 邹晓兵, 王新新. 2015: 用X-pinch对双丝Z箍缩进行轴向X射线背光照相?, 物理学报, null(1): 015203. doi: 10.7498/aps.64.015203

引用本文:

赵屾, 朱鑫磊, 石桓通, 邹晓兵, 王新新. 2015: 用X-pinch对双丝Z箍缩进行轴向X射线背光照相?, 物理学报, null(1): 015203. doi: 10.7498/aps.64.015203

Zhao Shen, Zhu Xin-Lei, Shi Huan-Tong, Zou Xiao-Bing, Wang Xin-Xin. 2015: Axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source, Acta Physica Sinica, null(1): 015203. doi: 10.7498/aps.64.015203

Citation:

Zhao Shen, Zhu Xin-Lei, Shi Huan-Tong, Zou Xiao-Bing, Wang Xin-Xin. 2015: Axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source, Acta Physica Sinica, null(1): 015203. doi: 10.7498/aps.64.015203

用X-pinch对双丝Z箍缩进行轴向X射线背光照相?

清华大学电机系,北京,100084

Axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source

摘要: 利用PPG-1脉冲电流源(400 kA,100 ns),同时驱动X-pinch和双丝Z箍缩负载。用X-pinch作为X射线源,对双丝Z箍缩进行了轴向背光照相的初步实验。得到了双丝Z箍缩在r-θ平面上随时间演化的图像,观察到了丝阵Z箍缩所有早期过程,包括丝芯膨胀、冕层等离子体产生、等离子体向丝阵中心的运动、先驱等离子体形成。利用阶跃光楔滤片,对上述背光图像进行了等离子体质量面密度的标定,首次得到了在r-θ平面上双丝Z箍缩等离子体质量面密度的时空分布图像。
- X-pinch /
- Z箍缩 /
- X射线背光照相 /
- 阶跃光楔滤片
Abstract: The axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source was conducted on PPG-1, a pulsed power generator with a current of 400 kA in amplitude and 100 ns in pulse width. Its time-resolved axial backlighting images are obtained. In the backlighting images all the physical processes similar to those occurring in the early stage of the wire-array Z-pinch are observed, including the expansion of the high-density wire core surrounded by low-density coronal plasmas, the motion of the coronal plasma toward the axis of the wire-array, and the formation of precursor plasma. The areal mass density of the plasma shown in the backlighting images is calibrated with step-wedge filters. And the time-resolved radial distributions of the areal mass density of the plasma from the two-wire Z-pinch are obtained.

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用X-pinch对双丝Z箍缩进行轴向X射线背光照相?

清华大学电机系,北京,100084

关键词:

摘要: 利用PPG-1脉冲电流源(400 kA,100 ns),同时驱动X-pinch和双丝Z箍缩负载。用X-pinch作为X射线源,对双丝Z箍缩进行了轴向背光照相的初步实验。得到了双丝Z箍缩在r-θ平面上随时间演化的图像,观察到了丝阵Z箍缩所有早期过程,包括丝芯膨胀、冕层等离子体产生、等离子体向丝阵中心的运动、先驱等离子体形成。利用阶跃光楔滤片,对上述背光图像进行了等离子体质量面密度的标定,首次得到了在r-θ平面上双丝Z箍缩等离子体质量面密度的时空分布图像。

English Abstract

Axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source

清华大学电机系,北京,100084

Keywords:

Abstract: The axial backlighting of two-wire Z-pinch using an X-pinch as an X-ray source was conducted on PPG-1, a pulsed power generator with a current of 400 kA in amplitude and 100 ns in pulse width. Its time-resolved axial backlighting images are obtained. In the backlighting images all the physical processes similar to those occurring in the early stage of the wire-array Z-pinch are observed, including the expansion of the high-density wire core surrounded by low-density coronal plasmas, the motion of the coronal plasma toward the axis of the wire-array, and the formation of precursor plasma. The areal mass density of the plasma shown in the backlighting images is calibrated with step-wedge filters. And the time-resolved radial distributions of the areal mass density of the plasma from the two-wire Z-pinch are obtained.

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