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Over the years, researchers have been studying the use of high-energy laser heating materials, in order to eventually produce fusion energy. Recently, the theoretical physicists at the Imperial College London in the UK proposed a new heating mechanism that produces a non-impact electrostatic shock wave with a high-energy laser that heats small pieces of solid material up to thousands of eV ) Level, higher than the center temperature of the sun. Relevant results published in the recent "Nature Newsletter" magazine.
The researchers said this is the first time they have proposed this approach and is expected to open new avenues for studying thermonuclear fusion energy - scientists have been seeking ways to mimic the sun to generate clean energy.
According to the Physicists Network, the heating rate of the new method is 100 times that of the fusion experiment conducted by Lawrence Livermore National Laboratory in California. In most materials, the laser energy heats the electrons in the material first, and the electrons heat the particles of the material-ions. The team's approach is to use laser-induced electrostatic shock waves to heat the ions directly and hence faster than indirect heating by electrons.
Often, when high-intensity lasers are applied to the material, the resulting electrostatic shock waves push the ions, accelerating them away from heating. The researchers found that if materials have a special ionic link, they get different accelerations through the shockwaves, causing friction, which in turn causes them to quickly warm up. This effect is the strongest in a solid containing two ions (such as plastic), with only one ion, it does not. In addition, the density is also one of the reasons heating up fast. When shock waves pass through a high-density material, the ions are squeezed together and the friction is much greater than with a low-density material.
The co-author, Mark Sherlock, Ph.D., professor of physics at the school, said: "The two ions are like matchsticks and matchboxes, and you both need it. A match will not burn itself."
Arthur Terrell, author of the paper, said one of the problems in fusion research is how to get energy from the laser at the right time and at the right place. And this method allows the energy directly into the ion.
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