Plasma confinement system with outer electrode having liquifiable material and methods for use

A plasma confinement system comprising:

• an inner electrode;
• an intermediate electrode that at least partially surrounds the inner electrode, wherein an acceleration region is radially between the inner electrode and the intermediate electrode;
• and
• an outer electrode that at least partially surrounds the intermediate electrode, wherein an assembly region is between a first end of the inner electrode and a second end of the outer electrode, the outer electrode comprising:
• a solid shell that at least partially surrounds the assembly region;
• and
• an electrically conductive material within the assembly region and disposed on the solid shell on a longitudinal axis of the plasma confinement system, at the second end of the outer electrode, wherein the electrically conductive material has a melting point within a range of 180° C. to 800° C. at 1 atmosphere of pressure,
• wherein the plasma confinement system is configured to establish, via a voltage applied between the inner electrode and the solid shell of the outer electrode, a Z-pinch plasma through which current is to flow between the first end of the inner electrode and the electrically conductive material at the second end of the outer electrode.