The speed of photons is the speed of light, and α particles are only about 5% of the speed of light, and there is nothing human can do to use them to propel a spaceship of thousands of tons and tens of thousands of tons in a certain period of time.

This is also why Zhao Zongyao wrote it in the form of a "summary", and he himself felt that it was impossible to make it in his lifetime......

This is even more true for the base, Lin Ju's new mission is to study a fusion radiation thruster with a thrust of 1,000 tons, and the progress of 10 million tentatively is still 0, not even the lowest 0.1%, far beyond the current world capacity.

However, this at least shows that radiation propulsion is feasible, and the base is not currently capable of conducting research on it.

Even laser-confined inertial plasma fusion, the third-generation fusion technology realized by that world line, can only be admired for its technical difficulty.

The year 2039 in another world does not mean that their technological level is the same as this world line, and the core temperature of their fusion reactor exceeds 1.5 billion degrees Celsius, and they are charging towards 2 billion degrees, which is the target of a low-energy maintenance reactor.

Controlling the rampaging and irregular plasma at 1.5 billion degrees Celsius and obediently reacting according to the predetermined route? This requirement is no different from a dream for current scientists.

After all, the higher the temperature, the more intense the movement of the particles, and the exponential increase in the difficulty of interference, it is unimaginable how chaotic the particles can be at a core temperature of 1.5 billion.

"How? How sure are we? ”

Lin Ju flipped through the scratch paper scattered on the table and raised the questions he was most concerned about.

Ye Changsi raised his head and sighed at this time, blinking his bloodshot eyes.

"Future...... This technical route of the other world is quite excellent, and it has almost exhausted all the means that humans can think of, especially the weak force constraints...... It's counterintuitive, but it's not a furnace design drawing, we just have a reliable basis.

In fact, it is impossible for us to achieve it at all, the front-end technology alone is too much and too complicated, ten years, twenty years? If more information is not obtained, twenty years of continuous investment should be able to solve the problem of front-end technology. ”

Twenty years? Lin Ju was about to say something, but was interrupted by Cheng Nankai, who stood up.

"Twenty years is just an ideal number, in fact we have to spend 10 years studying particles."

Cheng Nankai slowly sorted out a few manuscripts:

"I mainly spent time studying Yu Qian's formula, and it was indeed correct, but it was only a rule.

If we are going to use it to make restraints, we have to know more about it, and the weak force is fermion...... That is, the force between particles such as neutrinos, electrons, etc., which needs to be studied with the help of K mesons. ”

In 1949, scientists saw a strange particle in a photograph of cosmic rays for the first time, and four years later, this particle was artificially obtained with a powerful accelerator, which was later named K meson.

There are four types of K mesons, two of which have positive and negative charges and are denoted as K±, and the other two are uncharged and denoted as K° and K.

Therefore, the K-24 meson is called a singular particle, which means that the generation time of this kind of particle is very short, only about 10-24 seconds; However, the average life expectancy is generally more than 10-10 seconds, which is relatively long.

Cheng Nankai explained what K meson is, and then said:

"K mesons, which need to be obtained through a particle accelerator."

"And what is needed is a very large, very high-energy accelerator, preferably larger than the LHC (the world's largest hadron collider) in Europe." Ye Changsi followed up and added.

"This process cannot be omitted unless we have the most direct drawings of the fusion device and the construction technology, but if we want to really master it, we still need accelerators."

“……”

Speaking of accelerators, Lin Ju immediately understood, the base can't afford it.

The cost of particle accelerators is too exaggerated, it took 21 billion euros to build an LHC in Europe, and the maintenance and energy consumption of this thing are extremely exaggerated, starting a few hundred million or more than a billion, and the electrical power is comparable to that of a small city.

With an LHC (Large Hadron Collider) with a diameter of 8.6 kilometers and a circumference of 27 kilometers, the LHC (Large Hadron Collider) is a larger accelerator than all of it, and it really takes the power of the whole country to complete.

Therefore, when Lao Yang Shangshu did not recommend that the country engage in accelerators, it was not profitable and extremely expensive, which was really costly and unrewarding for the country at that time.

Even if the domestic price is lower, I am afraid that at least 100 billion yuan will have to be invested to make a super-large accelerator, and the aerospace and military aspects have increased the expenditure by hundreds of billions compared with the original world, and it is too difficult to get an accelerator project.

Besides, how to convince the above to spend such a large price to do the accelerator?

Fortunately, Ye Changsi took the initiative to say:

"The theoretical value of this book is very high, we don't need to rush to carry out the fusion project for the time being, just the preliminary theoretical research will take a lot of time, and we will not need those equipment that is out of time.

But I still have a suggestion to increase the number of nuclear scientists to more than 100, and see if we can participate in EAST, at least not purely theoretical research to collect some data. ”

Cheng Nankai: "My opinion is similar, and frankly speaking, only Lao Ye has the ability to carry out research now, and at least about three A-level or above scientists are needed, and what is needed in the field of high-energy physics is an excellent genius." ”

"Hmm......"

Lin Ju understands very well that the most cutting-edge physics does not need quantity, a genius who is not born in a hundred years is more useful than a scientist from 100 disciplines, it needs an extremely smart brain and creativity, this kind of talent is completely discovered by luck.

And the domestic ...... Lin Ju suddenly thought of Academician Yu who he met in Qiongzhou, he was actually a super genius in the field of fusion, and Lao Yang was too, but they were all too old to carry out high-intensity scientific research work.

We can only hope that when the system task will be completed again, and we will send over such super talents as Einstein, Bohr, Fermi, or two coins, so that we can hope to carry out these physics explorations that are difficult for ordinary people to understand.

Or the system is kind enough to give an A-level skill card, Lin Ju guessed that the advance space station or the moon landing must be a major achievement, if only there was such a reward.

Although Ye Changsi frankly explained that the content involved in this book was too complicated for the base, Lin Ju was still itched by the prospect of nuclear fusion, after all, nuclear fusion can make people see the dawn of the sea of stars, and he can now be sure that the nuclear fusion technology will succeed in this century.

"So how do we go about joining EAST? It's the world's leading fusion project, and I'm afraid it's hard for us to get in. ”

Lin Ju finally asked a question, but Ye Changsi just smiled and pointed at Cheng Nankai.

"Don't underestimate yourself, Xiao Cheng is probably the most promising nuclear physicist of the younger generation in the eyes of the Academy of Sciences now, and it must be no problem for him to come forward."

(End of chapter)