"The advantages of controlled nuclear fusion are obvious: its raw materials are readily available, the extraction of hydrogen isotopes such as tritium from seawater, the huge reserves, and the large reserves of He3 on the moon; ”

"Of course, the disadvantages are also obvious: the reaction requirements of controlled nuclear fusion are extremely high, and they need to reach hundreds of millions of K-level high temperatures! Therefore, the requirements for other aspects, especially materials, are also particularly high, which leads to the fact that at present, there are no mature fusion reactors in the world, let alone large-scale commercialization. I believe that Mr. Li Yuanwu has the best understanding of this point, and everyone here is more or less clear......"

What is the old Mr. Li Yuanwu has the most experience!

Under the rostrum, Academician Li Yuanwu's nose was about to explode.

This kid is really more and more hateful the more you look at it, and the more you look at it, the more annoying it becomes!

It's just that after calming down a little, he also knows that what Liu Feng said is the truth.

Compared with controlled nuclear fission, controlled nuclear fusion is really much more complicated!

Let's start with the problems encountered in controlled nuclear fusion in history:

First of all, the difficulty of temperature has not been solved.

Because deuterium nuclei are charged, it is difficult to put them together due to the existence of Coulomb force, and nuclear fusion mainly relies on strong nuclear force, but the distance between nucleons must be less than 10fm before there is a nuclear force.

However, in order to get the nucleons that close, it is necessary to have an extremely high temperature (i.e., the kinetic energy of the particles) to overcome the Coulomb force, and the theoretical value of the required temperature is 560 million K, which was later revised to about 100 million K (because the average kinetic energy was mainly used in the past, and in fact the kinetic energy of many particles is greater than the average kinetic energy), but even 100 million K is not so fun!

First, what kind of container can withstand 100 million K?

Second, the fusion material cannot be cooled yet, and the reaction cannot continue when it is cooled.

Therefore, since the 50s of the last century, the M country and the Europeans have begun to try and summarize, and so far, several controllable nuclear fusion methods have been summarized: ultrasonic nuclear fusion, laser confinement (inertial confinement) nuclear fusion, and magnetic confinement nuclear fusion (tokamak).

At present, the most commonly used device in the world is the tokamak magnetic restraint device.

Tokamak is derived from the Latin toroidal, kamera, magnit, and kotushka, which are cyclic vessels that use magnetic confinement to achieve controlled nuclear fusion.

The current problem of tokamak magnetic confinement devices is the Q value, that is, the increase of the ratio of output power to input power.

Because the Q value is less than 1, it is actually a loss, this kind of fusion will not have any economic benefits, and if you want a large Q value, the easiest way is to increase the material of a single nuclear fusion, but in this case, the requirements for energy absorption and control devices are high.

At present, although they have achieved a Q value of about 1.5, there are still two problems that have not been solved.

The first is to provide the energy required for high temperatures without interruption.

A Q value of 1.5 means that 15,000 tons of TNT-equivalent energy is produced, and 10,000 tons of TNT-equivalent energy must be invested, and it is continuous, just like in a sci-fi blockbuster: as soon as a sci-fi device is turned on, the lights of the whole city are extinguished!

This is, of course, absolutely impossible.

Secondly, even if you can continue to supply electricity, but you put in 100 kWh of electricity, and it produces 150 kWh of electricity, and if you want to convert it into electricity, if the conversion rate is less than 66%, it is still a loss!

And the generator technology with a conversion rate of up to 66% is probably not as simple as the controlled nuclear fusion technology!

Therefore, at present, all the major countries in the world have not made a breakthrough in this technology.

Thinking of these questions, the old gentleman had a black face.

Seeing Lao Li's reaction, Mr. Wang on the side couldn't cry or laugh, this kid, why do you have to provoke Lao Li......

Real gold is not afraid of fire, and the truth can become clearer and clearer in the debate.

Therefore, Liu Feng didn't care what the audience thought, and continued to preach:

"It's the opposite of controlled nuclear fusion. Controlled fusion reactions require extremely high requirements, but antimatter requires almost no requirements. The collision of positive and anti-anti-matter with each other and annihilation occurs naturally, without any control on our part, we only need to control the flow of positive and anti-matter encounters to achieve energy generation. ”

"Similarly, the reaction is extremely efficient, almost 100%, and the product is energy, which is completely free of pollution and non-radioactivity, and the only drawback is that it is difficult to obtain antimatter raw materials, which is indeed a great disadvantage compared to controlled nuclear fusion. ”

"However, whether nuclear fusion is more difficult to control, or whether antimatter is more difficult to obtain on a large scale, is the question that we need to discuss today. Do you have any objections to this?"

"I have an objection!"

Mr. Li Zhengwu has been holding back for a long time, and as soon as Liu Feng's question was raised, the old gentleman couldn't wait to raise his hand to ask.

"Professor Liu, let's not talk about who is more difficult in the large-scale acquisition of antimatter or the controllability of nuclear fusion, just the storage of antimatter is a big problem. Coincidentally, because of the ease with which positive matter and antimatter react, once we have produced a large amount of antimatter, what do we use to store it? As far as I know, at present, the scientific community does not have a set of technologies that can store antimatter in large quantities and for a long time. ”

Here it comes!

Liu Feng sighed in his heart.

The competitive nature of antimatter and controllable nuclear fusion is destined to deny the necessity of antimatter engineering, so as early as the beginning of the planning, he has systematically analyzed the experts engaged in nuclear fusion research, whether it is temperament or technical level, he has already evaluated it in his heart.

The academic level of this old Mr. Li Zhengwu is naturally nothing to say, the leader in the field of controlled nuclear fusion in China, if the academic level of scientists all over the world is graded, at least it is also an SS-level boss, full SSS level;

The two armies are fighting, one side knows itself and the other is waiting for the battle, but the other side has no knowledge of the opponent, and when they see the so-called 'flaws', they just rush forward, who can win in the end, the answer is already very clear!

In China, if you want to do great things, in addition to mastering sufficient resources, you must also grasp the people's hearts and let them be used by us; and why Liu Feng wanted to ask Zhang BU to convene this meeting is not because his qualifications are shallow and he cannot control the people's hearts.

In order to establish his authority, whether he is despicable or helpless, Mr. Li is destined to become his 'stepping stone' anyway.

Looking at the 'imposing' old Mr. Li, Liu Feng smiled, like a little fox:

Academician Li is right. Antimatter storage technology has always been a challenge. ”

"Just last year, Euratom used anti-hydrogen laser physics instruments to capture a considerable number of anti-hydrogen atoms in flight, but their storage time was only 0.172 seconds; the Fermi National Laboratory in country M is even better at this technology, and last year they were able to extend the storage time of antimatter atoms to 17 minutes; and even the air base in country M boasted that it could extend the storage time of antimatter to 3 months, as for whether it is true or false, it is difficult for us to verify. ”

"Let's just assume it's fake!"

"However, in any case, from the very beginning of the millisecond level, to the later 17 minutes, the extension of antimatter storage time is completely visible! And the reaction time of controlled nuclear fusion is still calculated in seconds, and has not achieved an order of magnitude improvement - this shows the fact that the improvement of antimatter storage technology is not difficult! Whether in theory or in fact, the storage time of antimatter that we extract every year is increasing exponentially......

"However, the fact that you have traveled 100 miles is less than 90, and although you are right, this does not mean that antimatter storage technology is easy to solve. ”

Mr. Li Zhengwu is still not convinced, and even a little disdainful of this set of rhetoric.

Engaging in scientific research is like a tortoise and rabbit race, although it seems that your research results have improved more than others, but who knows if there will be any bottlenecks, naps and so on?

If you don't reach the finish line in one day, then you can't say that your method is easier.

Liu Feng's trick is just a set of fooling primary school students, and he still wants to put it here to fool these academicians, is it because his donkey skills are poor?