Current distribution between an X-pinch and a current-return rod or parallel X-pinches

Summary form only given. Current distribution between X-pinches and copper current-return rods was studied, considering the effect of mutual influence between different branches. In the experiment of current distribution between an X-pinch and a copper current-return rod, the current in the X-pinch is roughly the same with that in the current-return rod until the X-ray burst, which reflects that the current in the copper rod flows on its surface, and that the current in the X-pinch flows on the plasma rather than the wires, resulting in a same impedance of significantly different wires. For the same kind of wire, the bigger the diameter, the longer the plasma lasts, and the longer the current in the X-pinch equals to that in the current-return rod. In the experiment of current distribution between two Xpinches, the current flowing through the two X-pinches does not depend on the diameter or material of the X-pinch, confirming that X-pinches of different materials and diameters have the same impedance. The amplitude of current flowing in the X-pinch farther from the polyformaldehyde isolation rod is always slightly higher than the other, indicating the influence of the mutual inductance between the branch circuits.