X-Ray Emission From a Tabletop $X$-Pinch Device
X-Ray Emission From a Tabletop $X$-Pinch Device
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DOI：
10.1109/tps.2012.2207919
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发表时间：
2012-08
影响因子：
1.5
通讯作者：
Ran Zhang;X. Zou;Xinlei Zhu;Shen Zhao;Haiyun Luo;Xinxin Wang
中科院分区：
文献类型：
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作者：
Ran Zhang;X. Zou;Xinlei Zhu;Shen Zhao;Haiyun Luo;Xinxin Wang
在小型（2 m × 1 m × 1.5 m）脉冲电流发生器（~100 kA和60 ns）的基础上，构建了台式x -掐位装置并进行了测试。使用不同导线（5 μm、8 μm、10 μm和13 μm W导线以及13 μm和25 μm Mo导线）制作的x -引脚的负载电流几乎没有变化，这意味着导线的阻抗远低于负载部分的总阻抗。当上述导线用作两线负载时，始终观察到来自X-pinch的x射线脉冲。随着双线负载质量的增加，x射线发射相对于负载电流开始的时间延迟增加。正如预期的那样，x射线脉冲由一个单峰或两个亚纳秒脉冲宽度的重叠峰组成。x射线源通常是一个点或两个部分重叠的点，这与x射线脉冲的测量是一致的。x射线点源尺寸：5 ~ 50 μm。当负载电流足够大时，经常观察到两个时间间隔为10ns的x射线脉冲。第二个x射线脉冲的出现归因于等离子体的第二次挤压。
Based on a compact (2 m × 1 m × 1.5 m) pulsed-current generator (~100 kA and 60 ns), a tabletop X-pinch device was constructed and tested. The load current was almost unchanged for X-pinches made using different wires (5-, 8-, 10-, and 13-μm W wires and 13- and 25-μm Mo wires), which means that the impedance of the wires is much lower than the total impedance of the load section. When the aforementioned wires were used as a two-wire load, X-ray pulses from the X-pinch were always observed. As the mass of the two-wire load increases, the time delay of the X-ray emission relative to the beginning of the load current increases. As was expected, the X-ray pulse consists of a single peak or two overlapping peaks of subnanosecond pulsewidth. The X-ray source is usually one point or two partly overlapping points, which is consistent with the measurement of an X-ray pulse. The size of the X-ray point source ranges from 5 to 50 μm. Two X-ray pulses with a time interval on the order of 10 ns were often observed for a small-mass load when the load current is high enough. The appearance of the second X-ray pulse is attributed to the second pinch of the plasma.