Scientists with great souls, may God welcome you!

When you are with us, even strangers know

Your reputation is both wise and high

Not only in the furnace of death

We finally see the noble heart you show

Excerpted from a poem written by Ashlok, editor-in-chief of Berlin Daily, to commemorate the accident in 1943. (Forgive the heroes of East China.)

Slotin was very serious.

The two hemispherical beryllium balls are plutonium-239 inside. Because beryllium has good reflective neutron properties, it can be guaranteed that no neutrons will penetrate from the inside, so that people are safe outside.

Radiation disease is a terrible disease, but people in later generations are definitely too pretentious. After getting pregnant, they actually prevent their neighbors from using IFI. It is the biggest thing in the world. She has a baby. It is the most important thing in the world. If that little bit of electromagnetic radiation can cause personal injury, then there will be no safe place in the world.

Of course, this is a question of dose size.

When two balls approach each other, the neutron will have more opportunities to hit the nucleus and to what extent it is, only through experiments can we know.

This is basically a model of an ordinary nuclear bomb. The two hemispheres in front and back, and the explosive behind detonates. Pushing the two hemispheres together can complete a terrible chain reaction and turn it into a nuclear bomb explosion.

The key is this distance, which is achieved by transferring the middle gasket. When the thickness is marked on the gasket, you can know the distance and determine the real and effective critical situation through the reaction of different distances.

Slotin's expression was not too serious. For him, it was necessary to take his feet as light as he could. He had been so desperate in the past, especially during the test flight. When did he be nervous? If it weren't for the laboratory not to smoke, he really wanted to hold the cigarette butt in his mouth and complete this simple experiment.

Yes, for him, there is no difficulty.

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

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

The scale of the nucleus is quite small, and only when the distance is close to a certain value will a terrible chain reaction occur.

At this time, Slotin held a screwdriver in his right hand. When the upper hemisphere was about to contact the lower hemisphere, he stabbed the screwdriver in, pressed it between the two hemispheres, maintaining the gap between the upper and lower hemispheres.

"Move the gap." Slotin greeted.

Although his main operator was tested, just like doing surgery, there was only one main operator, and he still had to have an assistant.

Slotin was occupying both hands, holding the upper half of the ball in his left hand and the screwdriver in his right hand. At the same time, an assistant on his side was responsible for converting different gaps. Through such gaskets of different thicknesses, the distance between them was changed.

At this time, there were only two of them on the operating table. Two colleagues were paying attention to each other two meters away. Further away, in the corner of the room, there were four other personnel responsible for calculating.

The assistant carefully began to draw the gaps in it. The assistant was not as good as Slotin's psychological endurance. This thing was quite dangerous. If something happened, I am afraid that everyone present would die and the entire base would be ruined.

Otherwise, why call it Demonic Ball Heart?

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

Damn, there are mosquitoes in this broken desert. The vitality is so tenacious. The mosquitoes in Africa are quite powerful. Once you bite a lump, you may not be able to get out for ten days or half a month.

This mosquito flew towards the gap between the two hemispheres with no chance?

Just as the assistant looked at the mosquito's trajectory, there was a big hand in front of him.

"Wow!" Slotin's right hand quickly grabbed the mosquito, and his mouth was still laughing: "Look at whether you fly fast or my hand fast. In a while, I will pull your mouth down."

The assistant was stunned.

Where is the screwdriver in your hand? What you want to control is the Demon's core!

"Boom!" A crisp sound appeared in everyone's ears. Slotin originally had a screwdriver in his right hand, but now he used his right hand to slap the mosquito. The screwdriver poked inside, but it didn't steadily. After rolling down twice, it fell to the ground!

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

The gap was just pulled out and had not been replaced with a new one. Now, the only screwdriver inserted inside has fallen off!

At this moment, Slotin was stunned for a moment. What's going on?

Here, mosquitoes are the most annoying. He is right to kill mosquitoes, because the screwdriver is inside, and he feels it is inserted firmly!

But who would have thought that the screwdriver actually fell down?

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

To prevent accidents, Slotin was prepared with both hands, with a screwdriver in his right hand and a top half of the beryllium ball with his left hand.

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

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

Damn, it's not good!

At this moment, suddenly, his left hand slipped.

"Dong!" The sound was not loud, lighter than the sound just now, but at this moment, the arrival of the god of death had been announced.

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

The current situation also exceeded Slotin's expectations, so he stayed for a while.

The plutonium block above and the plutonium block below are in close contact, just like two cut eggs paired with the yolks completely matched together.

At the moment of contact, the terrifying chain reaction started.

A neutron impact generates four neutrons, bombards four nuclei, generates sixteen neutrons, and continues to bombard... Each impact reaction occurs almost in a shorter time than microseconds.

Neutrons cannot come out either. The outer beryllium shell envelops all the neutrons, reflects them back, and continues to participate in the reaction.

Therefore, this impact chain continues to extend downward, and more and more are behind it. This is the terrible thing of exponentiality. The density of neutrons grows rapidly in microseconds. Every time a new neutron is generated, it will continue to bombard other plutonium atoms, producing energy and more neutrons...

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

The fission of a single atomic nucleus releases only a few hundred megaelectron volts, but the advantage of quantity makes it quickly become a terrifying macroscopic energy.

In a short time, the gap between the two balls, and the plane parallel to the gap, expanding into the entire room, you can see the blue fluorescence generated by air ionization. At the same time, a huge heat wave has hit everyone's cheeks.
Chapter completed!