China Education Equipment Procurement Network News: According to the British "New Scientist" report recently, the British AWE (formerly known as the British Atomic Weapons Development Research Center) company, Rutherford Appleton Laboratories and Lawrence Livermore California Scientists in the laboratory said they will work together to develop laser nuclear fusion as a clean energy source.
When the nuclei of lighter elements such as deuterium and tritium meet, they will aggregate into heavier nuclei and release huge energy. This process is nuclear fusion. Manually controlled continuous fusion reaction can be divided into two categories: magnetic confinement nuclear fusion and inertial confinement nuclear fusion (laser nuclear fusion, particle beam nuclear fusion and current pulse nuclear fusion). Currently, the European Joint Annular Accelerator (JET) in Karam, United Kingdom, and the International Thermonuclear Fusion Experimental Reactor (ITER), which are testing reactors under construction in France, all use magnetically constrained nuclear fusion devices. Magnetically confined nuclear fusion uses powerful electric pulses to bombard heavy hydrogen to generate plasma. Before fusion occurs, scientists need to apply a strong magnetic field to confine the plasma firmly. However, it is difficult to do this because the plasma will soon leak or become unstable.
Now, scientists plan to use laser nuclear fusion to generate electricity. Compared with magnetically confined nuclear fusion, laser nuclear fusion produces higher temperatures and higher pressures. Therefore, nuclear fusion occurs faster, and only needs to limit the plasma to a few billionths of a second. Laser nuclear fusion is the use of laser to irradiate nuclear fuel to cause nuclear fusion reaction. Because it is very similar to the hydrogen bomb explosion in many aspects, since the advent of lasers in the 1960s, scientists have begun to use high-power lasers to make fusion fuel occur. Fusion reaction to study some important physical problems of nuclear weapons.
Laser fusion reactors do not produce large amounts of hot material that may melt. However, nuclear fusion neutrons are very dangerous. Tritium in fuel is also radioactive and will release beta particles. It is dangerous for humans to inhale such particles, and its half-life is very long, 12.5 years.
Today, the world ’s largest nuclear fusion laser device is the National Ignition Device (NIF) at Lawrence Livermore National Laboratory. Scientists in this laboratory hope that by the end of next year, enough energy will be generated from nuclear fusion to generate The laser pulse thus achieves "ignition". Ignition is a self-sustaining reaction that can generate a lot of energy far beyond the "profit and loss" point.
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