First Plasma

First Plasma refers to the initial state of plasma in a nuclear fusion process, particularly in experimental fusion reactors like tokamaks. Plasma is a hot, ionized gas made up of charged particles. In fusion research, achieving First Plasma means that the device successfully generates and contains this ionized gas for the first time. This milestone is critical as it marks the transition from construction to operation, demonstrating the reactor's ability to create conditions necessary for fusion, which could eventually lead to clean and limitless energy production.