Physicists have called ice the ideal fuel for a fusion reactor. Calculations of an international team of physicists led by Egemen Colemen, a professor at Princeton University (USA), published the publication Nuclear Fusion.
Usually, scientists in experiments to create thermonuclear reactors and tokamaks use hydrogen gas as the main type of fuel. An international group of physicists from Princeton University has been conducting experiments on the DIII-D tokamak for several years. Scientists are testing the operation of one of the key components of the future device – the fuel injection system into the reactor.
In the course of the study, scientists presented a replacement for traditional gas injectors – a special ice cannon that can accelerate microscopic granules of ice to a speed of 1 km/s, after which they can already be introduced into the clouds from the plasma inside the tokamak.
This type of fuel will increase the productivity of the tokamak, scientists say.
At the end of last year, Chinese physicists heated up the plasma inside the East superconducting installation for thermonuclear fusion to 100 million degrees Celsius. This is six times the temperature of the solar core, which heats up to 15 million degrees Celsius.
Charged and heated plasma particles in a tokamak are held by magnetic fields that appear from the plasma itself. This makes it possible to ensure constant heating of atoms and to keep the plasma ring in one place. At the same time, scientists in a similar German tokamak hold plasma with the help of magnetic coils – they make atoms much more stable, however, they do not allow plasma to be heated to super-temperatures.