Armor Frenzy

Fortunately, twelve people don't need much oxygen. Ye Han provides three pieces of oxygen ice every day. If the second team can't use up, there is still half an oxygen brick left over. The three groups of oxygen ice made in one morning are enough for two. The team breathed for three days, which did not affect the progress of the investigation at all.

While the second team was busy building the base, the third team's investigation work had already been carried out in seven, seven, eighty-eight, and there was no need to add more people to the third team. Ye Han was busy for another half a week, and finally completed the investigation work in the lake area.

After more than 20 days of uninterrupted work, a large amount of first-hand information was obtained from large-scale sampling and analysis, and the three groups determined that the crater is a super-large crater lake.

The thickness of the ice layer is different at different locations in the lake area. Although there is no time to investigate the detailed thickness of the ice layer, the impurity content of the ice sample can roughly infer the ice layer condition at the sampling point.

About 60% of the ice layer in the glacial lake contains more impurities. Ye Han and others believe that the ice layer in such an area is thinner. There is no basis for making such a judgment, but everyone thinks that most of the impurities in the ice are the result of the boiling lake water that brought the bottom sediment to the surface when the impact occurred countless years ago.

The three groups did not care about the thickness of the ice layer, but during the investigation, Ye Han found that the ice ore with a lot of impurities was not only of poor quality, but also contained a certain amount of radioactive substances in the impurities. Merely filtering the impurities would not solve the problem at all, and the water must be removed. radioactivity to ensure water safety.

Ye Han broke out in a cold sweat, and couldn't help but feel fortunate that the living cabin had been using circulating water.

Circulating water is only psychologically uncomfortable, but radiating water is directly fatal!

Although the surface of the moon is not a real cosmic space, but the environment is basically the same, radiation is everywhere, and it is impossible to compare the ice of the moon with the ice of the earth!

The vacuum on the moon, extreme high temperature and low temperature can kill the invisible, but the most dangerous is not the extreme environment, but the radiation from the universe!

The protection of the earth's magnetic field can block deadly rays and protect the earth's biosphere; although the Tiangong or the International Space Station is located in outer orbit, the orbital height does not exceed the protection range of the earth's magnetic field and is in a safe position.

But the moon, which is 380,000 kilometers away, has long been out of the protection of the earth's magnetic field. The magnetic field of the moon itself is pitifully weak. The moon is naked and exposed to ferocious solar storms and cosmic rays like no clothes.

High-energy particles from space can penetrate the human body, damage DNA, break gene chains, and increase the risk of cancer and other diseases. Therefore, all humans operating on the lunar surface must take precautions.

The weight of the lunar spacesuit is five times that of the astronauts. This design is far from simply increasing the load to ensure health. Most of the load comes from the protective layer in the spacesuit.

In the eyes of ordinary people, an excessively thick protective layer is unnecessary, and it is actually the case. To protect ordinary cosmic rays, a too thick protective layer is not required.

But there are no absolutes. The radiation from distant supernovae is not so simple. It contains heavy metal ions with a speed close to the beam, that is, the nucleus of the metal element after it has lost its outer electron.

If this thing is assembled into a bundle, the power is equivalent to the ion cannon in science fiction, but those who have studied physics know that the same **** repel each other, the nucleus is positively charged, and the repulsion will separate the metal ions, so there will be no large number of metal ions bombarding one at the same time. location situation

If the problem of same-sex repulsion cannot be solved, the so-called ion cannon can only stay on paper forever!

The danger does not only come from space. When the particles in the cosmic rays hit the surface of the moon, it will trigger a micro-nuclear reaction and produce a large number of dangerous secondary particles, so the surface of the moon is always radioactive.

From the sky to the ground, the damage of the moon to human beings is all-round. It can even be said that the moon is full of maliciousness to human beings, let alone the construction of a lunar base, even if it appears on the surface of the moon, it is full of danger.

The reason why the temporary base is placed in the crater is also due to safety considerations. After all, there is a mountain inside the crater, and the cosmic radiation received is always smaller than that outside the mountain.

It is not too late to make amends.

Ye Han began to focus on the radioactivity of ice mines. The results not only proved the idea that there are many impurities and poor quality, but also found that the closer the ice sample is to the surface, the stronger the radiation, but the radiation from the ice sample taken ten centimeters below the ice surface in the thick ice area is extremely weak. It meets the safety standards for drinking water; almost no radiation can be detected in ice samples taken under 20 cm below the ice.

Ye Han and others believe that this is because there is no atmosphere on the surface of the moon, and the surface of the glacial lake directly contacts the cosmic space. It is normal for the lunar soil and moon dust covering the lake to be contaminated with a little radioactive material. Only the surface of the glacial lake is light.

When the Moon Palace plan was formulated, the radiation protection issue of the lunar surface base had already been rigorously demonstrated, and the safety of water was also discussed. The ice mine is much easier than staring at the water treatment device from morning to night, and the water supply efficiency is not the same.

The radiation situation of the ice mine is only a by-product of the investigation mission, and it is an unexpected harvest of the investigation mission. However, this result is of great significance to the Moon Palace Project, and even fundamentally solves the problem of water use for the base.

Not just now, but also in the future!

The survey results seem to put the cart before the horse... Heavy water is a nuclear raw material and a very important strategic resource. The question is, can the most important resource be more important than water resources?

From this point of view ~www.readwn.com~ the results are more important than the survey itself.

Of course, the investigation of heavy water has not been relaxed, but the results were beyond everyone's expectations. Most ice samples could not find heavy water at all, even those ice samples with serious radioactivity were no exception.

The ice samples containing heavy water were less than 10% of the total samples. When Ye Han's sampling points were marked on the map, he immediately discovered that all the heavy water-containing collection points came from an area due south of the temporary base. Here It was temporarily designated as a heavy water area by Ye Han.

The heavy water area is an irregular circular area. The northern edge is more than 500 meters away from the temporary base, and the center is 3.6 kilometers away from the base. The entire heavy water area covers an area of ​​nearly 30 square kilometers.

The ice sample with the highest content came from 4.5 kilometers south of the temporary base, reaching a record 9.5%!

When the result came out, Xu Hua thought it was a malfunction of the testing equipment, and after repeated testing with different water samples several times, he had to accept the result.

Immediately, this piece of ice caused a sensation in the entire base. When the satellite flew over the base again, the news caused a sensation in the entire ground command center.