Sorry if duplicate, I couldn't find it searching the forum:
"The team’s setup is known as a Z pinch, where the electric current in the plasma generates a magnetic field that “pinches” or compresses the plasma. Researchers have used the setup for decades for lab-based studies of the hot interiors of stars. And in the 1950s, scientists detected the signatures of neutrons generated by fusion reactions inside a Z pinch. But despite this initial success, researchers had largely given up on Z-pinch-based fusion reactors because of the unstable nature of the plasmas they produce.
Zhang and colleagues have found a way to get around this problem, generating a stable plasma from deuterium and hydrogen atoms. To do this, the team applied a shear force to the plasma as it advanced through the accelerator. This generated a radial flow that maintained the plasma—a solution to the stability problem predicted by theorists... [more]"
ETA: from Univ of Washington https://newatlas.com/nuclear-f…eakthrough-z-pinch/59257/