Scientists with great souls, may God welcome you!

When you're with us, even strangers know about it

Thou hast a great reputation for wisdom

Not just in the crucible of death

We finally see the noble heart you show

From a poem written in 1943 by Ashlock, editor-in-chief of the Berliner Zeitung, commemorating the accident. (Forgive me for the heroes of East China.) ）

Slotin was serious.

Two hemispherical beryllium balls, with plutonium-239 inside, can ensure that no neutrons will pass out of the inside because beryllium has a good neutron-reflecting property, so that people are safe outside.

Radiation sickness is a terrible disease, but the people of later generations are absolutely overly hypocritical, after pregnancy, actually prevent neighbors from using IFI, it is simply the world's biggest, she gave birth to a child that is the most important thing in the world, just that bit of electromagnetic radiation, if it can cause personal injury, then there is no safe place in the world.

Of course, there is a question of dosage size.

When the two balls are close to each other, the neutrons will have more opportunities to hit the nucleus, and how close they are is only known by experiments.

This is basically a model of an ordinary nuclear bomb, with two hemispheres in the front and back, and the explosives in the back detonate, and by pushing the two hemispheres together, you can complete the terrible chain reaction and turn it into the explosion of a nuclear bomb.

The key is this distance, which is achieved by transferring the gasket in the middle, and the thickness is marked on the gasket, so that the distance can be known, and the real and effective critical situation can be determined through the reaction of different distances.

Slotin's expression was not too serious, for him, it was necessary for him to be lightweight, he had died so many times before, especially during the test flight, which time had he been nervous? If it weren't for the fact that smoking was not allowed in the laboratory, he would really want to carry out this simple experiment with a cigarette butt in his mouth over and over again.

Yes, for him, there is nothing difficult.

Slotin stood in front of the two hemispheres, his left hand easily inserted into the thumb hole, grasped the beryllium-made upper hemisphere, and moved down with ease, facing the lower hemisphere below the platform.

The two hemispheres were originally separated, and the distance between them at the beginning was very large, so Slotin moved very quickly.

The scale of the nucleus is quite small, and it is only when the distance is close to a certain value that the dreaded chain reaction occurs.

At this time, Slotin's right hand was holding a screwdriver, and when the upper hemisphere was about to make contact with the lower hemisphere, he poked the screwdriver into it, and put it between the two hemispheres, maintaining the gap between the upper and lower hemispheres.

"Move the gap filler." Slotin beckoned.

Although the experiment is his main operator, it is the same as doing surgery, it is not enough to have only one main surgeon, and there must be an assistant.

Slotin held both hands, holding the upper hemisphere in his left hand and a screwdriver in his right, while an assistant on his side was responsible for switching between the different gaps. By using such gaskets of different thicknesses, the distance between them can be changed.

At this time, there were only two of them on the side of the console, and two colleagues were watching two meters away from them, and farther away, in the corner of the room, there were four other personnel responsible for calculating.

The assistant carefully began to smoke the gap filler, the assistant does not have the psychological endurance of Slotin, this thing is quite dangerous, once there is an accident, I am afraid that everyone present will die, and the entire base will be finished.

Otherwise, why is it called the Demon Sphere Heart?

Just as the assistant had just pulled out the thick gap filler and had not inserted the thin one, he heard a buzzing sound in his ears.

Damn, in this broken desert, there are still mosquitoes, the vitality is really tenacious, and this African mosquito is quite powerful, once you bite a pimple, you may not be able to get down for ten days and half a month.

This mosquito actually flew towards the gap between the two hemispheres?

Just when the assistant was looking at the trajectory of the mosquito, there was a big hand in front of him.

"Wow!" Slotin's right hand grabbed the mosquito with agility, and his mouth was still laughing: "Look if you fly fast, or my hand is fast, in a while, I will pull your mouth down." ”

The assistant was stunned.

Where's the screwdriver in your hand? You're going to control the demon core!

"Boom!" A crisp voice appeared in everyone's ears, Slotin was originally holding a screwdriver in his right hand, but now he used his right hand to shoot mosquitoes, the screwdriver poked inside, did not steady, rolled down twice, and fell to the ground!

In an instant, everyone's eyes looked over, and everyone's eyes were filled with fear.

The gap filler has just been pulled out, and it has not been inserted into a new one, and now, the only screwdriver inserted in it, has fallen off!

At this moment, Slotin was also stunned, what's going on?

Here, mosquitoes are the most annoying, and he is right to fight mosquitoes, because the screwdriver is in it, and he feels that it is firmly plugged in!

But who would have thought that the screwdriver would actually fall?

It doesn't matter, I'm still holding it with my left hand!

In order to prevent accidents, Slotin prepared with both hands, a screwdriver in his right hand, and the upper part of the beryllium ball in his left hand.

Don't be afraid, don't be afraid.

Slotin's psychological quality is quite strong, this sudden situation is nothing at all, and now, his left hand is firmly grasping the upper hemisphere!

Damn, it's not good!

At this moment, suddenly, his left hand actually slipped.

"Boom!" The voice was not loud, softer than the voice just now, but at this moment, the arrival of death had been announced.

If you know that you are prone to sweating, Slotin will definitely put some anti-slip powder on your hands before doing the experiment!

The current situation also exceeded Slotin's expectations, and he was stunned for a moment.

The plutonium on top is in close contact with the plutonium on the bottom, as if two cut eggs are on top of each other, and the yolks are completely together.

At the very moment of contact, the terrible chain reaction was activated.

One neutron hits, four neutrons are produced, four nuclei are bombarded, sixteen neutrons are generated, and the bombardment continues... Almost every impact reaction occurs in less time than a microsecond.

The neutrons can't come out, and the outer shell of the beryllium, which encapsulates all the neutrons, reflects them back, and continues to participate in the reaction.

So, this chain of impacts, constantly extending downwards, more and more later, this is the exponential horror, the neutron density grows insanely in microseconds, and every new neutron produced will continue to bombard other plutonium atoms, producing energy and more neutrons...

There is no barrier between the two plutonium hemispheres, the neutrons are growing wildly, and at the same time, the energy is growing at a terrible rate.

The fission of a single nucleus releases only a few hundred trillion electron volts, but the numerical superiority makes it quickly become a macroscopic terrifying energy.

In a short period of time, the gap between the two balls, the plane parallel to the gap, expanded to the entire room, and the blue fluorescence produced by the ionization of the air could be seen, and at the same time, a huge heat wave had hit everyone's cheeks.

It's over!