Chapter 49: Potato Sun
Nuclear fusion has been studied extensively since the time of mankind.
At that time, there was a famous joke. It is said that a scientist was asked how long it would take for controlled nuclear fusion to be achieved.
The scientist replied, fifty years.
Then, twenty years later, the man asked the scientist again how long it would take for controlled nuclear fusion to materialize. The scientist still replied that fifty years.
And then another twenty years, and then another twenty years, and every time the man asked the scientist, the scientist replied that it was fifty years.
So there is the stalk of "Fifty Years Forever". In other words, it will always take 50 years for controlled nuclear fusion to take place at any time.
This meme, of course, is used to ridicule the delay in the large-scale application of controlled nuclear fusion. Of course, it also reflects the difficulties of controlled nuclear fusion technology.
It should be noted that the term "controlled nuclear fusion" here should actually refer to controlled nuclear fusion with commercial application value, rather than controlled nuclear fusion in an absolute sense.
In the laboratory, controlled nuclear fusion technology has already been realized. Under the control of people, the fusion fuel gently releases the energy contained in it.
But the only key point is that it takes 400 parts of energy to drive this device that can produce fusion on nuclear fuel, but only 1 part of energy is produced after nuclear fuel fusion......
Controlled nuclear fusion: At present, there are two directions for human exploration. One is a magnetic restraint device, and the other is an inertial restraint device.
The reason why "constraints" are needed is that the temperature of nuclear fuel needs to be raised to hundreds of millions of degrees before it can start fusion. And with such a high temperature, it is clear that there is no material that can accommodate it.
In this case, only non-contact restraints can be adopted.
Magnetic confinement devices use magnetic fields to adopt a principle similar to magnetic levitation to control their position without touching nuclear fuel.
The inertial restraint device restrains them by a principle similar to that of archery - a container will shoot fusion fuel clusters, and while they are still in the air, they will be cauterized by a laser, raising their temperature to hundreds of millions of degrees Celsius, causing them to fuse to release energy. By the time they hit the ground, the fusion process has ended, the temperature has dropped, and the structure of the machinery can no longer be damaged.
This is called an inertial restraint device.
Until the end of human civilization, mankind has gained in both directions. But which route is the right one, no one knows.
Of course, Chen Yue didn't know.
"Since I don't know, let's go up together and study together."
Chen Yue was ruthless.
As a result, he decisively built two nuclear fusion research bases, one to study the magnetic confinement route and the other to study the inertial confinement route.
The research base for the magnetic confinement route is a little better, it covers an area of 1.6 square kilometers, and two nuclear fission power stations have been built to supply electricity, so the research base for studying the inertial confinement route is amazing.
Because it is currently in the stage of theoretical verification, completely ignoring the practical application, in order to allow more time for nuclear fuel to stay in the air, Chen Yue built a vacuum reactor with a length of 2.3 kilometers, and built ten power stations incidentally......
After three months of construction and another three months of commissioning, the study began.
Like humans, Chen Yue first studied deuterium-tritium fusion.
There are three naturally occurring isotopes of hydrogen, which are deuterium, deuterium, and tritium.
It is commonly known as hydrogen, which is made up of a proton and an electron, and does not contain neutrons.
The Sun, Jupiter, Saturn and other planets, their main constituent material is Ga. Among them, the sun is a star, which shines and heats through nuclear fusion, and the nuclear fusion carried out on the sun is mainly the fusion of the sun.
With the highest content and the richest reserves in the universe, why not use it for controlled fusion research?
The reason is simple: it is too difficult to obtain a high enough amount of energy to use it as a fusion fuel.
The energy density of the fusion of the depa is actually very low. Just like the sun, the sun is huge and has single-handedly illuminated the entire galaxy, but in fact, its energy density is unimaginably low.
For example, the potatoes that humans eat daily in the earth era actually have a self-respiration mechanism, that is, they can release heat. But the average person can't feel it, why?
Because it's so low.
Then, put the potatoes equal to the volume of the sun in the position of the sun - assuming that these potatoes will not collapse and squeeze due to their own gravity, there will be no other changes, and they will only maintain the shape of the potatoes, then this potato sun will be dozens of times brighter than the real sun, and can scorch the whole earth......
This shows how low the power of fusion inside the sun is.
If you want to increase the fusion power, as long as you can reach dozens of times the temperature and pressure of the sun's core, so that the fusion will also have extremely high power. But......
I can't do it.
In comparison, deuterium-tritium is simpler to coalesce, and higher power can be achieved at lower temperatures.
At the current level of technology, only deuterium-tritium fusion has the prospect of commercial application.
As a result, Chen Yue once again carried out the difficult research and advancement of the blue wisps of the road.
Chen Yue had a hunch that this would be a more difficult study than his own research on the miniaturization of nuclear fission devices and ion propulsion technology.
Because there are so many problems that need to be solved. For example, the confinement of high-temperature plasma, device stability, equipment reliability, neutron shielding technology, thermal conversion technology, and so on, each of which can become a bottleneck. And if a bottleneck cannot be bypassed, it means that this entire route is scrapped.
Under such circumstances, Chen Yue pushed forward with difficulty.
However, there is a more favorable condition than human civilization, that is, Chen Yue can go all out to devote the industrial and scientific research forces equivalent to an entire human civilization into this research, and there is no internal friction, no misunderstanding, no communication, ineffective loss is very low, and the utilization rate can even reach more than 95%.
In comparison, even if human civilization concentrates the strength of an entire civilization and goes all out, the utilization rate can reach more than 10%.
In this way, Chen Yue can be regarded as using the power equivalent of ten human civilizations to carry out research on controllable nuclear fusion technology with all his might.
In the age of Earth, the originator of the study of controlled nuclear fusion scientists once famously said.
"When society as a whole needs it, controlled nuclear fusion will be achieved."
And now, the equivalent of ten human civilizations are going all out to promote its progress and eagerly aspire to its realization......