Bright Sword: I took Li Yunlong to work in military industry

Chapter 657: Plutonium is still needed to depopulate the Japanese

Sun Desheng led the 59 Type modified tanks of the Independent Regiment Cavalry Battalion and swept across the entire Hebei area. All the Japanese who dared to block the road were rushed past, and all the checkpoints set up were like paper.

It’s not the Japs’ fault that they didn’t try hard, but rather that they were truly unable to stop the Independent Regiment’s Cavalry Battalion, which was like a steel torrent.

Based on the preparations made by the Japanese before invading China, China had no large or heavy armored vehicles, and there were not even a few tanks. What's more, the Eighth Route Army did not even have a few trucks. Although the Japanese strengthened their tactics and equipment against armored vehicles after the Battle of Zhongtiao Mountain, these preparations were as ridiculous as the Japanese's individual weapons in front of the Type 59 modified.

On the way back, Sun Desheng and his team did not follow the rules and drills of marching for two hours and maintaining for one hour as they did during the forced march. All people were under his command, and as long as there was no devastating damage to the Type 59 Mod itself and as long as the Type 59 Mod could still maintain its mobility, they would not stop.

Therefore, the return journey was extremely quick.

Sun Desheng ordered that once an exchange of fire with the Japanese defenders at the checkpoint was completed, an opening must be opened at all costs to cover the tank where Yu Min was located and quickly break out of the Japanese encirclement, and then the tanks involved in the exchange of fire would withdraw from their positions.

Since the Japs had no suitable anti-tank weapons, their counterattacks were completely ineffective.

Crossing steep mountains and rivers, the cavalry battalion of the independent regiment continued to create records for the maximum speed of tank advances on the battlefields of China and even the world, and they were also constantly pushing the limits of the Type 59 modified tank.

When Sun Desheng drove his tank across the border between Hebei and Shanxi, the worry in his heart finally settled down a little.

However, he still did not dare to relax at all. As long as he did not hand over the young Yu Min to Minister Yu, Sun Desheng would not be able to let go of his worries completely.

......

"Director, according to the plan you mentioned before, we have designed and completed the extraction of the first batch of ammonium diuranate in the laboratory, but there is a very troublesome problem. That is, based on the Jindi uranium mine we have discovered, even if all the ammonium diuranate is extracted, it will only be about 50 tons.

According to our current indigenous production capacity, it will take at least two years to produce 50 tons of ammonium diuranate.”

Chen Kan, with red eyes, did not even bother to change out of his white lab coat. He walked up to Yu Ye with a stack of documents and reported to him.

Well, it’s called by job title when working.

"50 tons?"

Yu Ye was muttering the data that Chen Kan had just reported, with a frown on his face.

50 tons of ammonium diuranate, calculated based on the uranium element, is about 38 tons, but this is not uranium 235 that can be used to make atomic bombs.

The abundance of uranium 235 in nature is about 0.711%, which means that the total amount of uranium 235 that can be refined in the future is about 0.271 tons.

0.271 tons is just 271 kg.

The critical mass of uranium is around 25kg, and this is only achieved after designing an efficient and high-quality neutron reflection layer. If it is a bare sphere, it will reach an astonishing 52kg.

These two hundred kilograms of uranium 235 are simply not enough.

In another timeline, the first live atomic bomb dropped by the United States on Hiroshima used 64 kg of uranium 235, so the more than kilograms of fission material that may be produced in the future is not enough at all.

"Only 5 to 10 atomic bombs, what can they do? If uranium is used as the fissile material, it will be very inefficient and will not achieve the goal of nuking the entire Japanese country."

Yu Ye sighed softly.

"Director, what did you say?"

Chen Kan only heard Yu Ye mumbling something, but he didn't hear clearly what he was saying.

If he knew that his beloved teacher was thinking that there was not enough material to make an atomic bomb and that his idea of ​​nuclearizing the entire Japanese territory could not be realized, he would immediately work harder and make sure his teacher didn't have such concerns.

"Oh, nothing, go ahead. First, follow our previous plan and complete the extraction of ammonium diuranate. At least we have to do the preparatory work first.

As for the rest, we’ll talk about it later.”

Yu Ye waved his hand, signaling Chen Kan to continue with his own work.

After Chen Kan left, Yu Ye frowned, picked up a pen and began to calculate on the manuscript paper. Even if the uranium mine just discovered near Taiyuan was taken into account, the final uranium production would probably be only about 300 tons. This would require several years of technological improvement, and Yu Ye could not wait at this speed.

"It seems that we have no choice but to build a reactor, using plutonium 239 as the main fissile material."

Yu Ye made up his mind. Since he had decided to resolve the war with the most explosive nuclear explosion to achieve the goal of depopulating the Japanese, the best way was to do it in one step.

Produce a large amount of plutonium 239 as fission material, complete the construction of the hydrogen bomb trigger, use the hydrogen bomb as the main weapon to cover the Japanese homeland, and complete all the work in one wave without leaving any beginning or end.

Just as he was thinking, a confidential telegram was delivered to Yu Ye's desk.

"Sun Desheng has returned to Jindi and is expected to return to Taiyuan in 4 hours and bring the target back."

The short telegram entered Yu Ye's eyes. He was a little worried at first, but after reading this telegram, Yu Ye's brows instantly relaxed.

I was just thinking about how to maximize the explosive efficiency of the existing fissionable materials, but I didn't expect that a solution would come up immediately.

He needs such a brain to help him, to help this nation unravel the mystery of thermonuclear fusion, and to bring true peace to this nation.

Yu Ye's eyes were fixed on the word "target" in the short telegram. He knew too well what these two words meant.

It can be said that without him, there would be no hydrogen bomb in China.

From another perspective, Yu Min possesses extremely high talent. His own interest is actually in the field of quantum mechanics, and he is not very good at thermonuclear reactions. However, he still sacrificed his academic future and turned his full attention to the research on thermonuclear weapons needed by China. This spirit of dedication is extremely great.

“Don’t worry, this time, I’m here and I won’t let you sacrifice too much time and energy in the thermonuclear field. Give China five years.

For the rest of your time, I will make sure you do the quantum mechanics research you love most.

This time, you will definitely have a chance to take the top spot in theoretical physics!"

Yu Ye murmured in a low voice. He was looking forward to seeing what kind of dazzling brilliance Yu Min in this timeline would bring.

"Help me prepare the car, I want to go to Taiyuan!"