Stellarator After World War II, a number of researchers began considering different ways to confine a plasma. George Paget Thomson of Imperial College London proposed a system now known as z-pinch, which runs a current through the plasma. Due to the Lorentz force, this current creates a magnetic field that pulls the plasma in on itself, keeping it away from the walls of the reactor. This eliminates the need for magnets on the outside, avoiding the problem Fermi noted. Various teams in the UK had built a number of small experimental devices using this technique by the late 1940s.
stellarator after world war ii a number of researchers began considering different ways to confine a plasma george paget thomson of imperial college london proposed a system now known as z-pinch which runs a current through the plasma due to the lorentz force this current creates a magnetic field that pulls the plasma in on itself keeping it away from the walls of the reactor this eliminates the need for magnets on the outside avoiding the problem fermi noted various teams in the uk had built a number of small experimental devices using this technique by the late 1940s