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利用“阳”加速器对平行面多金属钨丝(直径17μm,丝间距1mm,丝数3根或5根)负载进行了Z箍缩聚爆实验研究。在峰值为350kA,上升沿约80ns的电流作用下,使用针孔成像技术和X射线诊断技术,获得多钨丝等离子体融合图像及相应的软X射线辐射信号。对金属丝聚爆过程中负载电流变化对实验影响进行了分析,并探讨了引起聚爆过程中的等离子体柱腊肠型不稳定性、扭曲型不稳定性和“热点”及其周围弥散斑等现象的原因。
A Z-pinch polyphosphate experiment was carried out on a parallel-surface multimetallic tungsten wire (17μm in diameter, 1mm wire spacing, 3 wires or 5 wires) using a “positive” accelerator. Under the current of about 350kA peak and about 80ns rising edge, multi-tungsten plasma fusion images and corresponding soft X-ray radiation signals were obtained using pinhole imaging and X-ray diagnostic techniques. The influence of the change of load current during the process of polychrome wire explosion on the experiment was analyzed, and the plasma column sausage instability, twisting instability and “hot spots” and the surrounding diffuse spots The reason of the phenomenon.