Examples of the use of controlled nuclear fusion and its principles

At present, the more popular method is the tokamak device.

Let's start with the technology of controlled nuclear fusion.

Fusion differs from nuclear fission in that its start-up energy is huge. The hydrogen bomb is detonated by the atomic bomb (that is, the atomic bomb is first used, and then the deuterium or tritium is detonated by a large amount of energy brought by the atomic bomb ** to produce the hydrogen bomb**).

The same problem is with controlled nuclear fusion, where the reaction threshold of the nuclear material is so high that the energy it produces is so great that there is no container that can contain it without melting.

The solution to this problem is to place a fusion reactor in a tokamak device.

The tokamak device is simply a super magnet, and when the magnet is energized, it generates a huge magnetic field that can confine the hot material inside.

The device was originally proposed by the Soviets, and our country began to study it in the 80s, and it seems that there is a high device in Hefei at present. However, lagging behind the international level, the current highest technology content is the European Union, the United States, Japan and Russia jointly participate in a certain type of tokamak device, which seems to be able to achieve controlled nuclear fusion for about 100 seconds.

To add, cryogenic controlled nuclear fusion is still a global technical problem.

What is the principle of controlled nuclear fusion? Why does it take human technology to the next level?

...You're too professional in this question!!

It can completely solve the food problem. Solve the energy crisis of fossil fuel shortage once and for all. The water source problem has been completely solved.

The hegemony of the oil-based dollar will come to an end. Once nuclear fusion technology is realized, the great powers will have their eyes set on the vast universe.

Nuclear fusion is the process by which two lighter nuclei merge into one heavier nucleus and release energy. The most easily achievable fusion reaction in nature is the fusion of deuterium and tritium, isotopes of hydrogen, which has been going on on on the sun for 5 billion years. Controlled nuclear fusion is commonly known as artificial sun, because the principle of the sun is nuclear fusion reactions.

Nuclear fusion reactions rely mainly on hydrogen isotopes. Nuclear fusion does not produce the long-term and high levels of nuclear radiation that occurs in nuclear fission, does not produce nuclear waste, and certainly does not produce greenhouse gases, and basically does not pollute the environment) People understand that thermonuclear fusion started with the hydrogen bomb. Scientists want to invent a device that can be effectively controlled"Hydrogen bomb**"so that the energy continues to output steadily.

There are about three main ways of controllable nuclear fusion: gravitational confinement, inertial confinement and magnetic confinement, and the tokamak device that currently occupies the mainstream belongs to magnetic confinement, which mainly uses the isotope deuterium-tritium of hydrogen as a fusion fuel.

On the road to breaking through the fusion triple product, conventional tokamak devices have certain inherent shortcomings. At present, most of the world's tokamak devices are mainly for the purpose of experimental research, and the morphology and properties of the magnetic field confined to the plasma are continuously studied in depth. This requires that the confined magnetic field can operate stably for a long time.

Although the magnetic field can confine plasma at hundreds of millions of degrees Celsius, it is inherently unstable. A very large current is required to maintain a strong confined magnetic field. However, ordinary coils will inevitably heat up a lot after being energized for a long time with high intensity.

If we look at it from this point of view alone, there are many challenges in the long-term stable operation of conventional tokamaks.

Achieving the meaning of controlled nuclear fusion

The energy on Earth, whether stored in the form of ore fuels, wind power, water power, or plants and animals, is ultimately the sun: ore fuels are derived from the evolution of plants and animals millions of years ago, and the energy of plants and animals (today or before) is ultimately solar energy stored by the photosynthesis of plants at the bottom of the food chain.

The cause of wind is the uneven heat and cold caused by the heating of the atmosphere by the sun; The potential energy of hydraulic power also depends on the heating of the sun to evaporate and rise the water body in a low and flat position, and then be "transported" to a higher position in the form of precipitation, thus forming potential energy.

Therefore, no matter which energy source is used by human beings, in the final analysis, they are using solar energy, and the energy of the sun is the first to nuclear fusion, so if human beings master the method of releasing the energy of nuclear fusion in an orderly manner, it is equivalent to mastering the energy of the sun.

With an endless supply of fossil fuels, wind and hydropower, the idea that some advocate that modern industry will die out without energy is bankrupt. Therefore, controllable nuclear fusion reactors are deservedly called "artificial suns".

What you are asking is what is the final form of controlled nuclear fusion? The technology has been slow to take the form of the construction and development of large-scale fusion power plants.

According to information released by China's Ministry of Science and Technology, controlled nuclear fusion is a clean energy source and has been attracting attention in the energy sector. Controlled nuclear fusion can not only provide a large amount of cheap, reliable, and clean electricity, but also solve the problem of human energy shortage, while also reducing environmental damage. At present, the final form of controlled nuclear fusion technology should be the construction and development of large-scale nuclear fusion power plants.

This fusion power plant is built on a principle similar to that of a controlled fusion experimental device. This kind of equipment maintains a high-temperature plasma, realizes nuclear fusion reaction under the action of a magnetic field, generates a large amount of pin heat energy, and then converts this part of the energy into electricity by converting it into electricity.

Controlled nuclear fusion is currently only envisioned and has not yet materialized. Scientists say that in the short term, it will not be possible.

Introduction to nuclear fusion: Also known as nuclear fusion, fusion reaction or fusion reaction, it is a form of nuclear reaction in which two lighter nuclei are combined to form a heavier nucleus and a very light nucleus (or particle). In this process, matter is not conserved because a part of the matter in the nucleus of the atom that is being fused is transformed into photons (energy).

Nuclear fusion is the process of giving energy to active or "main-order" stars.