On the other side, Peng Hongxi stood beside Xu Chuan, with some expectation and some nervousness in his cloudy old eyes, and in addition, there was a trace of worry.

The importance of the first wall material for controlled nuclear fusion technology is undeniable.

The high-energy neutron beams produced during deuterium-tritium fusion are a worldwide problem, and if they are not solved, there will be no hope for controlled nuclear fusion.

And now, a glimmer of hope is just around the corner, which naturally makes him look forward to and nervous.

As for the concern, part of it comes from the current experiment, worrying that the materials they have developed may not be as good as the anti-neutron irradiation effect in high-energy neutron irradiation.

But more comes from the national treasure-level young scholar in front of him.

Compared with others, as a manager in charge of the day-to-day technical aspects of controlled nuclear fusion, he often has daily contact with the person in front of him to discuss various tasks, and he also understands his thoughts to a large extent.

If today's experiments confirm the neutron irradiation resistance of that zirconia carbon composite, then the next step is the construction of a demonstration reactor.

This will be the first demonstration reactor in China and the first in the world.

But you must know that two years ago, controlled nuclear fusion was still manipulating high-temperature and high-density plasma in seconds, but now, in the blink of an eye, demonstration reactors that can generate real electricity and use commercially are about to start building.

I have to say that in his opinion, this step is indeed a bit big.

There are still many problems in controlled nuclear fusion technology that have not been fully solved, such as tritium self-sustaining, although there are ideas, but not specifically perfected, or key problems such as magnetic surface tearing in the tokamak device, which have only been suppressed and not completely solved, and even the operation time of high-density plasma, they have not completed at least 24 hours of operation.

At this point, the construction of the demonstration reactor was directly started, which in his opinion was a bit too urgent.

Of course, in this mind, the older generation is cautious and cautious, and the idea of making contributions after seeking a complete understanding also occupies a part.

Compared with the younger generation, the older generation has experienced a lot of hardships, and when the country has nothing, they have stepped on a road with insufficient funds, materials and personnel, so that they have developed a cautious mind to ensure that nothing goes wrong.

After all, at that time, the motherland was really poor and could not afford all kinds of profligacy.

Of course, today, the motherland has become relatively rich and powerful, and it is completely feasible to use money, funds and manpower to save time through trial and error, especially in the field of controlled nuclear fusion.

Because the first wall material has not yet been solved, every deuterium-tritium fusion experiment is quite precious and will not take long.

However, Xu Chuan had great hopes for the material this time, risking some damage to the first wall to increase the time of deuterium-tritium fusion to two minutes.

As the ICRF heating antenna ceased to function, the temperature in the Dawn reactor chamber began to decrease rapidly.

The heat generated by the fusion of a small amount of deuterium-tritium raw material is not enough to maintain its own reaction, coupled with the operation of the water-cooled deflector, the temperature of the plasma in the chamber quickly falls below the million level, and continues to decrease steadily.

After waiting for the device to cool down completely, under the personal leadership of Zhao Hongzhi, two engineers wearing radiation protective suits quickly entered the reactor chamber and removed the previously deployed material samples and control samples from the first wall.

The staff who received the sample carefully and kept it in the corresponding vessel.

These samples will be sent to the institute to test the residues of the samples through special testing equipment.

The most important thing is the neutron radiation damage test.

Whether it is the value of DPA, or the neutron penetration rate of the material and other parameters, it determines whether this carbon composite with zirconia as an additive can really be applied to the first wall.

When the last set of experimental samples was removed, the engineers in charge of overhauling the equipment quickly entered the reactor chamber with the inspection equipment and began to evaluate the damage to the first wall material, the deflector, the overall structure and other components.

The two-minute fusion reaction of deuterium-tritium feedstock doubled the time they had ever started before. No one knows how much damage would be done to the first wall and the fusion reactor structure in this case.

Of course, damage to the Daybreak reactor is not the focus at the moment.

At this moment, everyone's attention is focused on the anti-neutron irradiation materials that have been sent to the research institute, which is the key to the real fate.

As the materials were sent into the testing room, leaders such as Xu Chuan and Peng Hongxi followed.

The first thing to do is, of course, neutron irradiation damage detection.

This is the core.

Under the personal chairmanship of Professor Zhao Guanggui, it took nearly two hours for the DPA destructive physical analysis test and neutron penetration and residue test report to come out.

When Zhao Guanggui came out with the test report, almost everyone in the laboratory surrounded him.

"How did it turn out?"

"Is it up to par?"

"How's the test result, Professor Zhao?"

The sound of gossip and inquiry kept sounding, and Zhao Guanggui stood in the crowd, holding the thin test report tightly in his hand, and met Xu Chuan's gaze.

With excitement and excitement in his eyes, he nodded vigorously, and said excitedly and tremblingly: "Judging from the test report, the carbon composite material with zirconia as a catalyst has shown quite excellent performance in the face of high-level neutron irradiation for two minutes!" Neutron irradiation injury. Fully compliant with the first wall material needs! ”

Hearing this, the laboratory erupted in violent cheers.

Peng Hongxi opened his mouth slightly, and his eyes were a little moist.

Gao Hongming was even more joyful and couldn't help himself.

A smile of joy spread across everyone's faces.

The result of neutron irradiation damage is the most important key.

There is no problem with this inspection, which means that the first wall material, it is done!

Hearing Zhao Guanggui's report, Xu Chuan also had a smile on his face, he reached out and took the test report from the other party's hand, and read it carefully.

[Irradiation conditions: deuterium-tritium fusion, irradiation temperature is 2945.15K]

[Irradiated materials: experimental group (zirconia carbon composites) control group (austenitic steel + tungsten gold)],

[DPA production rate: experimental group (0.0067%), control group (7.4%)]

[Neutron penetration rate: experimental group (99.958%), control group (59.81%)]

[Self-repair of Freneckel crystal defects: experimental group (grain boundary remodeling observed, current efficiency of 58.92%), control group (no traces of remodeling detected)]

【. 】

The values of one item crossed his eyes, and the corners of Xu Chuan's mouth hooked a trace of arc.

Judging from the test report, the zirconia carbon composite material still shows quite excellent performance in the face of 14.1Mev high-energy neutron irradiation generated by deuterium-tritium fusion.

Not only is the destructive physics of DPA quite good from a data point of view, but the grain boundary reconstruction ability granted by the atomic cycle technology also shows quite strong performance in the material.

It can repair the damage caused by the irradiation of small amounts of neutrons, and reconstruct the damaged carbon nanotube and zirconium crystals to maintain the stability of the material itself.

As for the neutron penetration, although it is slightly reduced in the high-energy region, it does not affect the overall performance, and the lost neutrons are less than a dime a dozen compared to the amount of neutrons produced by deuterium-tritium fusion energy, which is completely acceptable.

I have to say that today's experiment was quite successful.

Zirconia carbon composites, as expected, exhibited extremely good properties.

Staring at the test report in his hand, Xu Chuan thought about it, with a smile on his lips, the construction of the demonstration pile can begin.

It's just that I have to write a letter again.

After handing over the rest of the work to Peng Hongxi, Xu Chuan returned to his office with the test report of the zirconia carbon composite material.

The white letter paper lay out on the table, and after pondering for a while, organizing the language, the signature pen in his hand fell on the paper.

【Dear Excellency:】

[Hello, recently, Qixia controllable nuclear fusion project ushered in a major breakthrough. 】

[I believe you should already know that in the first wall material, through the unremitting efforts of many researchers in the institute, we have found a material suitable for the first wall of the controlled nuclear fusion reactor chamber]

[In terms of controllable nuclear fusion technology, Qixia controllable nuclear fusion engineering has mastered many puzzle pieces. First of all, in terms of plasma confinement, the Daybreak Fusion device has completed more than two hours of high-density plasma operation (of course, we can do it longer if needed), and on the first wall material, now that we have found the right material, I believe we have enough ability to solve the remaining problems. 】

[The progress of the Daybreak fusion device has given us hope that controlled nuclear fusion technology will be realized in the near future, and there is nothing better than this dream. 】

[Of course, this is inseparable from the country's long-term strong support and trust. 】

【. 】

After spending some time, Xu Chuan wrote the letter and handed it to Zheng Hai.

The purpose of writing this letter is not to ask for scientific research funds, and the last time the 20 billion yuan of funds has not been spent. On the one hand, I wrote a letter to report the good news, and on the other hand, I asked the above to arrange for people to come and handle the construction of the demonstration reactor.

The experimental reactor and the demonstration reactor are two completely different things, the latter is much larger than the former in terms of scale and supporting equipment, and it is more cumbersome to build.

Of course, in addition to that, there is also the preparation of the above.

With the first wall material resolved, he now has enough information to make controlled nuclear fusion.

After all, some of the latter problems are no more difficult than the long-term control of the turbulence of the first wall material and high-temperature high-density plasma.

And if the problem of controlled nuclear fusion is really solved, the impact will be absolutely earth-shattering.

Not only in the economic and energy sense, but also in the political sense.

Even controlled nuclear fusion itself needs to be properly arranged and disposed of.

PS: There is another chapter in the evening, asking for a monthly pass.