“阳”加速器钼丝X-pinch初步实验研究
Preliminary experimental study of Mo X-pinch on “Yang” facility
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摘要: 在“阳”加速器上进行了直径分别为10, 15, 20 μm, 交叉角为32°,45°,60°的钼（Mo）丝X-pinch实验。“阳”加速器产生的电流峰值约520 kA，上升时间80 ns。实验中通过X射线功率谱仪和纳秒分幅相机等仪器对Mo丝X-pinch辐射特性进行了诊断。实验表明：Mo丝X-pinch过程中会出现多次X射线爆发，箍缩过程中产生的热点辐射出能量超过3 keV的X射线，探测到的最小热点直径小于30 μm。Abstract: A series of experiments studying Mo wire X-pinch were carried out on “Yang” facility. This facility generated a peak current of about 520 kA with 80 ns rise time. The X-pinch load was composed of two identical Mo wires with a diameter of 10 μm, 15 μm or 20 μm, crossing at an angle of 32°,45° or 60°. X-ray power meter and X-ray framing camera were utilized to measure the power of the X-ray radiation and take X-ray imaging respectively. The results showed that one or more intense X-ray bursts occured and hot spots emitting X-rays of energy exceeding 3 keV were formed. The smallest hot spot was less than 30 μm in diameter.
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Key words:
- x-pinch /
- x-ray imaging /
- hot spot /
- plasma /
- accelerator
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