Release that Witch Chapter 1191: Rare elements

Roland picks out a lead box, opens the lid, holds the silver-white metal block in it, and feels that its heavy weight is not much different from a piece of pure iron before it is excited. If you lick two mouthpieces, it can be regarded as basically harmless. If you don't have a deep enough understanding of it, it may be hard to imagine just looking at the appearance, how amazing the power is contained in its small body.

With it, human beings have for the first time hit the threshold of mass-energy conversion.

Compared to all previous chemical gunpowder, this step is a new step.

Roland roughly counts the number of lead boxes, about 50, ignoring the weight of the container. Each box is calculated based on one kilogram of storage, which is a full fifty kilograms of uranium 235. Its purity is close to 100%. .

And there are more than one lead cabinet in this room.

If you put them all together ...

Is the research institute really "high energy"?

"How can these things be used to become what you called Splendor of the Sun?" Nightingale curiously, "Make a special machine, or ignite and ignite? I don't think they can burn."

"Want to know?" Roland couldn't help laughing, "Easier than you think, just put the metal blocks in the box together and they will automatically emit light and heat. Just this cabinet The uranium in it is enough to raz the Neverwinter City to the ground, so the responsibility of the Lucia is great.

The scene suddenly fell into a dead silence.

Lucia covered his mouth, and his eyes were frightened.

"... No," it took a while for Azima to find it difficult to set up a channel. "Do you mean that if we are not careful, we might ruin the city?"

Nightingale flickered, grabbed the lead box in Roland and put it back in the cabinet, then grabbed his hand and dragged it outward.

"Hey ... wait, what are you going to do?"

"Do you still need to ask!" Nightingale hurriedly, "Of course it will take you out of the city and let people take these things away! Lucia, go to notify Wendy and ask her to contact the administrative office!"

"I ... I'm also going to see His Highness Tilly," Azima gritted his teeth, "only she can call Sleeping Spell."

"Stop me, I'm kidding"

In the room, the chickens and dogs jumped for a while. It took Roland a while to calm everyone down.

"Are you sure you're just kidding?" Nightingale didn't feel good.

"cough cough, of course ... I just talk about the principle," he added quickly, "but actually it is not that easy to achieve the stimulus. Even if I try my best, it may not guarantee success. . "

Lucia breathed a sigh of relief, "Your Majesty ... you scared my feet."

"It's not very funny," Nightingale glanced at him, "if Wendy and Scroll hear this, whether it's a joke or not"

"I'm afraid they will require the new research institute to be moved away from Neverwinter City, right?" Roland helplessly.

"You know, or move you to a safe place."

"Well, when I didn't say those words before ..." He cleared his throat. "As long as you don't say it, Wendy and Scroll won't know."

"Maybe a bird has heard it." Nightingale leaned out the window.

"Cut the news, a bottle of Chaos Drink." Roland did not hesitate.

"The deal." She blinked away before the three.

Looking at the stunned Lucia and Azima, Roland shrugged, "Uh ... don't care, this is part of the joke."

After a while, Nightingale returned to the house, "No suspicious target was found, but the reward"

"Still works."

Her expression finally calmed down, humming to the side and chewing dried fish.

"That ... Your Majesty," Azima hesitated before he said solemnly, "What you said before wasn't all a joke, was it? Because you repeatedly emphasized the need to pay attention to weight when formulating rules, and to Confused or misplaced, you can even control each lead box precisely to four kilograms, and weigh it with the container, which can ensure the metal blocks in the box are equal. "She paused," And, You said that if there is an accident at the institute or there are signs of others breaking in, the first thing to do is to notify the guards to block the scene, and then immediately return to the castle to report instead of entering the hospital to check situation. This proves that ... they do Danger, right? "

Roland looked at her with a bit of surprise, "Nice observation. You are basically correct. In addition to toxicity, weight is also one of the key factors, so the purpose of being placed separately." Can judge the extract from the rules and regulations. The nature of it is prudent and meticulous. Is it because of this carefulness that she awakens her ability to trace back to the origin ... "But weight alone can only endanger the research institute, and want to make it into Devil. weapon, you need another thing. "

"Those particles that stand alone?" Azima responded quickly.

"Not exactly, but at least half guessed."

The composition of natural uranium ore is very complicated. In addition to uranium compounds, it is usually accompanied by many radioactive materials. Most of them are secondary products after decay. Some have completely lost their radioactivity and become stable bodies. Still on the way to long decay. Although Radiation Race initially refined the ore during the construction of the cursed temple, the basic composition is still roughly the same. This can be seen from the extraction results of Lucia.

The most abundant one is uranium 238. Although it cannot be made into weapon, it can be recognized by ceremonial magic cube, and its efficiency is almost the same as that of uranium 235, so it was sent to the Northern Slope Mountain backyard.

Second is uranium 235, which can be regarded as weapon grade with a purity of more than 90%. The content in nature is extremely low, accounting for only 1% of natural uranium elements, so the first one that I want to follow the "radiant radiation" route. The difficulty is refining, and this is also a barrier that most people cannot overcome.

But it is not the rarest subsequent decay products such as plutonium, radium, plutonium, and plutonium. Theoretically, one match is rare, and what Roland needs is the naturally occurring plutonium 210, which is also the plutonium family. Is the most common isotope.

As the flowers of the motherland cultivated by the nine-year compulsory education, Roland is familiar with the two elements of radium and tritium. Madam Curie, who is repeatedly mentioned in the textbook, is kept in history because he discovered them. Although the half-life of plutonium 210 is only a hundred days, and its content is so ridiculous that Madame Curie's multiple extractions have failed and ended, she still has the strong radioactivity exhibited by the ore solution. Pointed out its existence.

Whether it is radium or thorium, it can be used to make neutron sources. This is also related to the second difficulty of bright radiation: detonation.

The principle of the first generation nuclear weapon is very simple, even as simple as a sentence can be summarized: nuclide fission releases energy. Specifically for uranium, after receiving a neutron, uranium 235 will be excited into unstable uranium 236, and then split into two lighter nuclides and more free neutrons. The mass difference between them is It turns into energy.

Obviously, the released neutrons will collide with other nuclides. If they continue to circulate in this way, it will be a chain reaction. At the same time, the huge energy burst will be the same as the explosion.

But in the micro-world, the gap between the nucleus is like Tianyuan. As written in the textbook, if the atom is regarded as a football field, then the nucleus is just an ant above. If you are unlucky, the neutrons will soon fly out of bounds and the reaction will stop. To ensure that every ant is hit, it is necessary to pile enough pitches on its periphery to ensure that no matter which direction the neutron flies, an ant crosses its path.

Reflecting in the macro world, what is obvious is quality and shape.

In fact, the critical mass is not a fixed value. It is like a course in a line that is obviously not as good as a stacked course. Specific results require a lot of calculations based on their shape. Roland also heard a piece of anecdotal information about the failure of the war due to someone's miscalculation. Of course, as a latecomer standing on the shoulders of giants, he naturally did not have to start from scratch. Numerous experiments have proved that when the object is spherical, the critical mass is the smallest, and uranium 235 is 52 kilograms.

He has limited the amount of uranium in each lead box to less than one kilogram, which is considered cautious enough.

But the so-called critical mass is not fixed. If the area of ​​the stadium can be greatly reduced, or enough extra neutrons are provided for the nuclide, its critical value will drop significantly. The former is the principle of implosion bombs. Detonating explosives are arranged on the periphery of the bomb body. When the explosion occurs, the reactants are squeezed to one place instantly, making its density increase sharply, thereby exceeding the threshold. For the existing technology of Neverwinter City, whether it is to calculate the critical mass of irregular monomers or precisely control the explosive detonation of the center of the explosive, there are too many difficulties, so Roland will focus on the latter

Using a neutron source to ensure the continued fission reaction. u