According to a recent report by the Physicist's Organization Network, scientists at the US Department of Energy's Princeton Plasma Physics Laboratory conducted an investigation of plasma turbulence in the Tokemark nuclear fusion reactor using an inflatable imaging system and obtained a two-dimensional structure of edge turbulence And set up a large database that will help scientists find the main cause of heat and particle leaks in the Tokemark facility so that nuclear fusion can provide safe, clean and abundant energy to the world at an early date.
Nuclear fusion is a natural phenomenon that occurs in space, such as in the solar center, the natural powerful gravitational field will be high-temperature plasma constraints, making the nuclear fusion reaction inside, release huge energy, the other stars are the same. Designed like a Tokomak-like fusion device, a high-temperature plasma is controlled by a magnetic field to provide a steady flow of clean energy to humans through controlled nuclear fusion reactions, but high-temperature plasma frequently causes turbulence, causing heat and plasma loss, Nuclear fusion can not be sustained.
In a new study published in the latest issue of Plasma Physics magazine, PPPL physicist Stewart Zweiben led the team to obtain detailed data on the two-dimensional spatial turbulence correlation. They chose a representative Plasma samples were used to image the turbulence near the plasma edge using a gas imaging system during the outflow of the plasma 20. The gas in the gas imaging system is a source of neutral atoms that change as the turbulence intensity changes Glowing, fast cameras eliminate the two-dimensional details of these turbulences at high resolution, allowing researchers to recognize turbulence intensity fluctuations.
Zweiben and colleagues conducted computer analysis of the photographic data and found that the spatial structure of the turbulent flow is very similar to that of airborne clouds, just like some large clouds merge to form larger structures and some of the clouds divide into more Small structure, there will be a positive correlation or negative correlation between different turbulence, that is, some turbulence in the plasma will change along with the other turbulence.Zweiben said that the in-depth study of turbulence correlation can help scientists find the cause The turbulent location of the heat leak also helps to validate existing turbulence computer models.
