Characteristics of the Z-pinch implosion plasmas on low current generators

The primary physical images of the low driven current (< 7MA) Z-pinch experiments on the three facilities, including the Angara-5-1 and S-300 in Russia, and the Qiangguang-I in China, were analyzed and summarized. The wire-array Z-pinch implosion processes were simulated by using a zero-dimensional model and an one-dimensional radial-magneto-hydrodynamic code. It is found that in the different pulse power driver, even if there are the same peak currents, the process of the wire-array plasma implosion and the compression state can be quite different due to the different rising-time of the current. Moreover, it is also found that not total mass of the wire-array takes part in the implosion process in the Z-pinch experiment.