Overview

• Fresh footage captures pink plasma confined in the ST40 spherical tokamak, with injected lithium shifting from red to green as it traces magnetic field lines.
• The high-speed color camera records at 16,000 frames per second, helping researchers locate impurity radiation and check whether lithium reaches the plasma core, according to Tokamak physicist Laura Zhang.
• Tokamak Energy reports sustaining plasma at tens of millions of degrees under magnetic confinement, demonstrating conditions relevant to fusion experiments.
• The Oxford facility is in a multi-million upgrade focused on lithium experiments in partnership with the U.S. Department of Energy and the UK Department for Energy Security and Net Zero, with amounts reported as $52 million or £42 million.
• Company statements frame the results as experimental progress and improved diagnostics rather than evidence of net-energy gain or a commercial fusion system.