中国物理B ›› 2007, Vol. 16 ›› Issue (3): 772-777.doi: 10.1088/1009-1963/16/3/035
王真1, 徐荣昆2, 杨建伦2, 华欣生2, 李林波2, 许泽平2, 宁家敏2, 宋凤军2
Wang Zhen(王真)a)b), Xu Rong-Kun(徐荣昆)b), Yang Jian-Lun(杨建伦)b), Hua Xin-Sheng(华欣生)b), Li Lin-Bo(李林波)b), Xu Ze-Ping(许泽平)b), Ning Jia-Min(宁家敏)b), and Song Feng-Jun(宋凤军)b)
摘要: To investigate the imploding characteristics of cylindrical wire array, experiments with load current varying from 1.5\,MA to 1.7\,MA were carried out on the Qiangguang-1 facility. The complicated temporal-spatial distribution of x-ray radiation was measured by the one-dimensional (1D) x-ray imaging system. Other diagnostic equipments including the x-ray power meter (XRPM) and the time-integrated pinhole camera were used to record time-resolved x-ray power pulse and pinhole x-ray images. Analysis shows that the fast leading edge of the local x-ray radiation pulse is of primary importance in sharpening x-ray power pulse rather than the temporal synchrony and the spatial uniformity of implosion. Experimental results indicated that the better axial imploding synchrony, the faster the increase of x-ray power for an array consisting of 32 tungsten wires of 5\mum diameter than for the others, and the higher the x-ray radiation power with maximal convergence ratio (r_0/r_1) of 10.5. A `zipper-like' effect of x-ray radiation extending from the anode to the cathode was also observed.
中图分类号: (Z-pinches, plasma focus, and other pinch devices)