Chapter 376 Mr. Kang, you are really cruel!
Chapter 376 Mr. Kang, you are really cruel!
After Kang Chi in the video drank a sip of tea, he continued: “The advantages of the magnetic confinement route are obvious. It can greatly reduce the requirements of experimental equipment for materials, and the time to maintain the fusion reaction can also be very long.”
”But its disadvantages are also obvious. The energy efficiency ratio of magnetic confinement is too low. In order to maintain a high-intensity magnetic field, it needs to consume a lot of energy, and it is very difficult to improve the ratio of input and output.”
”In the early stages of nuclear fusion research, humans mainly rely on experimental verification, so tokamaks and stellarators can become the mainstream. Through these devices, we have indeed successfully “enclosed” nuclear fusion.”
”But “enclosed” alone is not enough. As nuclear fusion research gradually shifts from the early experimental stage to the commercial stage, the ignition time has gradually become less important, and the improvement of Q value is the real problem that needs to be solved in the future.”
”At this time, the shortcomings of the magnetic confinement device will It is becoming more and more obvious that this device that relies entirely on magnetic confinement is actually just a “shortcut” that was taken in the early stage to reduce material requirements…”
When seeing this, Zhong Weijian couldn’t help but pause the video again and asked Cheng Tao: “What do you think?”
Cheng Tao shook his head helplessly: “I remember that before Kang Chi became the chief engineer, I said that I felt that the tokamak had reached a dead end.”
”Although Kang Chi’s joining has restored my confidence a little, if even he says so now, it means that this road may really not work…”
When the Eastern Super Ring was first established, Cheng Tao was the most staunch and powerful supporter. As the chief technical consultant of the EAST project, he has devoted no less effort to the Eastern Super Ring than Zhong Weijian.
Therefore, when Zhong Weijian heard Cheng Tao say this, his original firm belief in the tokamak could not help but waver at this moment.
But he quickly suppressed this terrible thought.
He always believed that the path of scientific research is actually the same, the only difference is the degree of tortuosity of different routes.
Before the real results are out, no one can be sure which route is accessible or not, flat or tortuous.
After calming down, Zhong Weijian continued to read.
”So do you think that the current mainstream magnetic confinement device can’t help us realize the commercialization of controlled nuclear fusion?”
A teacher from the Department of Physics of Su Province University quickly raised the question that Zhong Weijian wanted to ask most on the spot.
“I personally think so.” Kang Chi gave a positive answer directly, “Of course, magnetic confinement is not without merit. In some links, the role of magnetic confinement is still irreplaceable, so the word I used just now is actually ‘completely dependent on magnetic confinement’.”
”In other words, you are optimistic about the combination of magnetic confinement and inertial confinement?”
”Yes.” Kang Chi nodded and opened the next page of the PPT, “This is also what I will explain to you next, other non-mainstream controlled nuclear fusion technology routes.”
”We already know that the conditions for nuclear fuel to undergo nuclear fusion are high temperature and high pressure, and these two conditions are strongly correlated. The greater the pressure, the greater the temperature.”
”So whether it is a magnetic confinement or an inertial confinement device, in addition to controlling the energy after fusion occurs, the greater purpose is actually to generate high pressure so that the device can produce nuclear fusion. change, which is commonly known as ignition. ”
”Because the magnetic pressure is limited, the magnetic confinement device has always relied on extending the reaction time. To put it bluntly, it is a slow fire. Therefore, the energy generated by nuclear fusion is relatively stable and inefficient, and a large amount of energy is required to maintain the magnetic pressure. ”
”Since the magnetic confinement is not strong and the efficiency is low, is it possible to help the device pressurize by adding external force?”
”This is what the teacher just mentioned, the combination of magnetic confinement and inertial confinement. In professional terms, it is a magnetized target device.”
”So to understand what a magnetized target device is, we must first know what magnetic confinement and inertial confinement are.”
”I just mentioned magnetic confinement. It is the main direction at present, but the development of inertial confinement is actually not slow. In fact, some solutions are even easier to implement than magnetic confinement in theory.”
”Inertia means that by applyingAdd external force to make the nuclear fuel collide with each other at a very high speed, thus producing a fusion reaction. In fact, the hydrogen bomb is made by using inertial confinement. ”
Speaking of this, Kang Chi directly pulled over a blackboard and drew an ellipse on it: ”This is a hydrogen bomb. We will first put an atomic bomb inside, and at the same time place lithium deuteride on the other side, and then detonate the atomic bomb inside.”
”After the atomic bomb explodes, it will emit high-energy X-rays. After these rays hit the outer shell, they will rebound and then gather on the lithium deuteride. The ablation material on the surface of the lithium deuteride expands and melts at high temperature, and the shock wave generated compresses the lithium deuteride inward. At the same time, the atomic bomb explosion will produce a large number of neutrons, which will react with lithium atoms and become helium + tritium. ”
”Then a large amount of deuterium and tritium move in the very small space of the hydrogen bomb, and then collide to produce nuclear fusion, so bang-the hydrogen bomb explodes. ”
When the video was played to this point, you can imagine how many comments there were on it…
”Is it okay to bang for a while?”
”Fuck, is Mr. Kang teaching us how to make a hydrogen bomb?”
”I don’t feel sleepy anymore!”
”Wow, live broadcast of making a hydrogen bomb? Mr. Kang, you are really a jerk!”
”You’re overthinking it. Here is the mass-energy formula E=mc. Can you make an atomic bomb with it?”
”That’s right. In fact, you can find the structure diagram of a hydrogen bomb by searching it on the Internet, but how many countries can make a hydrogen bomb?”
”That’s because they didn’t listen to Mr. Kang’s open class!”
”…”
Seeing the comments floating like snowflakes on the video, Zhong Weijian couldn’t help but frowned: “How can I turn off these dense words? ”
Cheng Tao: “…”
After Kang Chi introduced the principle of hydrogen bomb, he wiped the whiteboard again, drew a straight line, and then drew an ellipse below:
”Suppose this straight line is the ground. We dig a hole in the ground, and then throw a miniature hydrogen bomb into it, let it explode inside, and lock the energy released by the hydrogen bomb inside. Can we use this energy to generate electricity?”
”The professional term for this plan is called ‘nuclear explosion fusion power station’. It was first proposed by the Los Alamos National Laboratory in the United States, and it is also the pioneer of the inertial confinement route.”
”Later, Academician Peng of our country optimized this plan, making it more feasible.”
(End of this chapter)