The Rise of the Great Powers in the War of Resistance

The helicopter that Zhang Yunfei was on landed steadily on the apron next to the base. As soon as the plane came to a complete stop, a colonel officer walked over quickly and opened the hatch for Zhang Yunfei himself, and Zhang Yunfei walked down steadily.

"Stand at attention! Salute!!!"

With a loud shout, all the officers and soldiers on the small helicopter airport saluted Zhang Yunfei together. Everyone's eyes were full of respect and excitement.

Zhang Yunfei's prestige and prestige are not only very high among the common people, but also in the army. Today, everyone can see Zhang Yunfei up close with their own eyes. These officers and soldiers are naturally excited and respectful. .

Zhang Yunfei returned a military salute, and then said in a confident voice: "Comrades have worked hard!"[

Zhang Yunfei took a general look around just now, and the conditions here are still relatively difficult. This is a no-man's land, not suitable for human habitation. However, for the sake of confidentiality and safety, the base was put here.

Accompanied by several officers and the person in charge of the base, Zhang Yunfei walked to the base not far away. Through the introduction of the staff around him, the colonel officer just now is the person in charge of the army here, and the person in charge of the base has the last name Zhong, a middle-aged man in his 50s and [-]s.

"Chairman, please!" The person in charge of the base led Zhang Yunfei and others into a surface building, followed the passage, and descended to a depth of several tens of meters.

Along the way, Zhang Yunfei visited several laboratories and shook hands with many excited researchers, while the person in charge of the base kept reporting the whole situation to Zhang Yunfei.

Although Zhang Yunfei has never been here in person.However, Zhang Yunfei has read some information and documents about this base, and even signed and issued some important documents by Zhang Yunfei himself. It is even better than what was reported in the materials, and the scale is also very large.

Here's the building.At that time, a lot of manpower and material resources were spent.Zhang Yunfei still knew about it, but he didn't expect it to be just over two years since the start of construction.There is progress on this scale.

The person in charge of the base saw that Zhang Yunfei was more confused.He also took the opportunity to report: "Chief, since Oppenheimer came a few months ago, many problems have been solved. Scientific research is progressing very quickly."

Zhang Yunfei nodded, thinking in his heart, Oppenheimer is indeed a great man, he has really made a lot of money in this business, and only a few warships have been exchanged for such an outstanding talent.

"Go! Let's go see Mr. Oppenheimer."

Originally, Oppenheimer was going to greet Zhang Yunfei in person. Although he was a Jew, Oppenheimer also knew what kindness was.

After coming here, Oppenheimer certainly knew how much Zhang Yunfei attached importance to the atomic bomb. He not only invested a lot of manpower and material resources, but also provided himself with a right-hand assistant. Satisfied one by one.

After working here for a few months, Oppenheimer is now full of energy and motivation, which is completely different from when he first came to China. Oppenheimer would like to thank Zhang Yunfei face to face for creating such a good scientific research for himself. condition.

At the beginning, even in the United States, the United States did not pay much attention to me. I just arrived in China. Not only did Zhang Yunfei personally meet him, but he also entrusted me with the important task of appointing myself as the chief scientist of this scientific research base.

Oppenheimer wanted to welcome Zhang Yunfei in person, but Zhang Yunfei was afraid of affecting Oppenheimer's scientific research work, so Zhang Yunfei still didn't let Oppenheimer interrupt his scientific research work to welcome him.

When Zhang Yunfei saw Oppenheimer, Oppenheimer was wearing a white coat, explaining something to a group of people in a spacious laboratory.

These people, including Chinese and foreigners with blond hair and blue eyes, surrounded Oppenheimer and were listening to Oppenheimer's explanation carefully.

Oppenheimer, who was explaining, saw Zhang Yunfei and his party coming, immediately interrupted the explanation, and walked over excitedly. Although Oppenheimer and Zhang Yunfei had only met once, Oppenheimer had a deep impression on Zhang Yunfei. I have thought of Zhang Yunfei many times.

Walking in front of Zhang Yunfei, Oppenheimer said excitedly: "Oh! Dear Chairman Zhang, it is my honor to see you again, thank God so much."

Oppenheimer spoke a lot in English in one breath, and his gratitude was beyond words. [

Zhang Yunfei naturally also felt Oppenheimer's gratitude. Seeing that Oppenheimer had finished speaking, without waiting for the translator next to him to translate, Zhang Yunfei smiled and offered his hand.

Oppenheimer was flattered, and excitedly stretched out his hands to hold Zhang Yunfei's hand tightly, Zhang Yunfei smiled and said: "Mr. Oppenheimer, I'm still used to being here, if you have any requirements or difficulties, just tell me. "

The staff next to him were slightly surprised to see Zhang Yunfei's fluent English, and thought in their hearts, Zhang "Chairman" is also proficient in English, it's really unexpected!

Most of these people were not Zhang Yunfei's entourage. Zhang Yunfei's entourage didn't feel much qiguài for Zhang Yunfei's fluent English. Those who were familiar with Zhang Yunfei also knew that Zhang "Chairman" could also speak fluent Japanese.

If it is Zhang Yunfei's old subordinate, everyone knows that in the early days of the Anti-Japanese War, Zhang "Chairman" even went deep into the enemy's rear and killed many little ghosts by virtue of his fluent Japanese.

Zhang Yunfei and Oppenheimer had an exchange, and it didn't take long for Oppenheimer to talk about his current research work. When it came to his old line of work, Oppenheimer was eloquent and eloquent, while Zhang Yunfei was patient. listen carefully.

Although Zhang Yunfei has a much more detailed understanding of the atomic bomb than ordinary people, and knows a lot. In this era, there are really few people who can know about the atomic bomb, except for some professional scientific researchers and some nuclear physicists, but Zhang Yunfei is still patient. listen.

Listening to Oppenheimer's explanation, Zhang Yunfei gained a detailed understanding of the atomic bomb and its development.

The atomic bomb is one of the nuclear weapons. It uses the light and heat radiation, shock wave and induced radiation of the nuclear reaction to cause lethality and destruction, as well as cause radioactive pollution on a large area, preventing the opponent's military A weapon of mass destruction that acts to achieve strategic goals.

Before introducing the structural principles of the atomic bomb, Oppenheimer first introduced the charge of the atomic bomb to Zhang Yunfei.At present, the charge of the atomic bomb mainly uses uranium 235. At present, the fissile substance that can be obtained in large quantities and can be used as the charge of the atomic bomb is limited to uranium 235.

The scientific work of the atomic bomb is mainly how to obtain high-concentration uranium 235. Before Oppenheimer came, this work was full of difficulties and progress was slow. After Oppenheimer came, this work has achieved a "breakthrough" progress.

After Oppenheimer came, in order to obtain the high-concentration uranium-235 needed for the manufacture of atomic bombs, he immediately adopted the "gas diffusion method". concentration of uranium 235.

With nuclear charges, as long as their volume or mass exceeds a certain critical value, an atomic bomb explosion can be achieved.It’s just that there is still a problem with the initiation of the atomic bomb, that is, how to do it: when it is not needed to explode, it will not explode; when it is needed to explode, it can explode immediately.

This work is exactly the research topic that Oppenheimer and his scientific research team are currently conducting. However, it has already begun, and Oppenheimer is going to realize it through the control of critical mass or critical size.

How to control the critical mass or critical size, Oppenheimer also has a rough plan, Oppenheimer is going to adopt the so-called gun structure.

In later generations, the first atomic bomb used this structure. For example, the atomic bomb (code-named "Little Boy") dropped by the United States on Hiroshima, Japan, used a gun-type structure. The bomb weighed about 4100 kg, had a diameter of about 71 cm, and a About 305 cm.The nuclear charge is uranium 235, and the explosive power is about 14000 tons of TNT equivalent.

In principle, the simplest atomic bomb adopts the so-called gun structure.Two pieces of uranium that are both less than the critical mass are separated by a certain distance and will not cause an explosion. When they are combined together, they will be greater than the critical mass and explode immediately.

Zhang Yunfei took half the care and patiently listened to Oppenheimer's report. After the report was over, Oppenheimer beamed brightly, as if he was very pleased with his results.

After listening to the report, Zhang Yunfei was naturally very happy. Unexpectedly, after Oppenheimer came, the research progress of the atomic bomb was so fast. He was already studying how to control the explosion, and the purification of uranium 235 had been solved. and has purified a lot of highly enriched uranium 235.

Having achieved such a great progress, Zhang Yunfei was also slightly excited, and immediately asked: "Dear Mr. Oppenheimer, I am very happy that you have achieved such a great achievement. When will your first atomic bomb be developed? Woolen cloth?"

After hearing Zhang Yunfei's words, Oppenheimer said proudly: "Dear Chairman Zhang, first of all, I would like to thank you for providing such good conditions for our research. We will work hard and repay your kindness. We strive to develop the first atomic bomb within a year."

"Good! That's great!" Zhang Yunfei was naturally very happy when he heard that the first atomic bomb would be developed within a year. [

Zhang Yunfei thought, when the first atomic bomb was dropped on the battlefield, I don't know what the United States thought, and exchanged such a talented scientist for himself.It is estimated that the United States is in the mood to hit the wall.

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