Russian scientists modeled the behavior of metal in a thermonuclear reactor  Literally a few days ago we reported that the first hybrid thermonuclear reactor will be created in Russia, but special materials will be needed for its work, and as it became known, domestic specialists developed a technology that allows real-time monitoring of the The conditions of thermonuclear fusion will affect the materials. This will greatly facilitate and accelerate the creation of super-powerful and energy-efficient reactors.
The development is being conducted on the basis of the Institute of Nuclear Physics. GI Budker of the SB RAS, and the data on it are published in the journal Physica Scripta. The new technology will find its application in the design of the ITER thermonuclear reactor under construction. According to scientists, the plasma temperature in the ITER chamber will be about 150 million degrees Celsius. Traditional methods of analysis are applied after thermal exposure, so they do not allow to fully predict the behavior of the material at such high loads. The new method allows real-time diagnostics.
"At our experimental BETA test bench, we use a powerful electron beam to create a thermal shock. It gives relatively little background light, which usually hinders. In doing so, we monitor the state of the surface according to the structure of its thermal glow and the scattering of laser radiation on it. The combination of the pulse heating method and the techniques developed by us allows real-time monitoring of surface changes. We managed to find out that with uniform heating, hot regions with increased deformation can be formed on it. "
At the moment, the most suitable material for a thermonuclear reactor is tungsten. During pulsed heating, the material greatly expands, and then contracts and cools as it cools. The new technology of Russian scientists allows to predict the behavior of metal, because the loads can be short-lived. In this case, it is worthwhile to be especially careful.
"With a heating pulse duration of less than one thousandth of a second, during which tungsten manages to heat several thousand degrees, we observed the formation of cracks a few seconds after the exposure, when the material had cooled to room temperature."