Into Unscientific

Just as Zhu Guangya expected.

The appearance of the nationally produced gas exchange membrane plunged the entire conference room into an ecstatic atmosphere.

Not to mention ordinary experts, even big guys like Lao Guo and Qian Wushi couldn't help but shake their fists a few times.

after all

Gas exchange membranes involve the refining of enriched uranium.

In a sense.

The importance of enriching uranium is on the same level as the theoretical design of an atomic bomb, and is similar to the nonlinear neutron transport equation.

In the future life where Xu Yun traveled through time.

Even if the relevant binding treaties on nuclear testing and the quantity of uranium mines are not taken into account, many countries are still unable to extract enriched uranium with an abundance of more than 90%.

Of course.

The above sentence refers to the refining that relies entirely on one's own industrial level, and does not include the situation of calling daddy to import equipment.

all in all.

The news of nationally produced gas exchange membranes was a shot in the arm for today's group meeting, and it was off to a pretty good start.

After a while.

An old expert with gray hair and a band of tape wrapped around the legs of his glasses raised his hand:

"Comrade Chengzong, you said that about 10 kilograms of enriched uranium can be extracted by the end of the year. Is this expected progress or actual progress?"

Yang Chengzong was slightly startled, but he quickly understood what the old expert wanted to express:

This is asking about the mass production of gas exchange membranes.

After all, in addition to centrifuges for refining uranium, the number of gas exchange membranes is also a key factor.

According to what Yang Chengzong said.

This kind of gas exchange membrane requires a relatively high cost to produce, so its production capacity is an issue that must be paid attention to.

Fortunately, Yang Chengzong was not unfamiliar with the relevant data of gas diffusion membranes, so he quickly adjusted the situation:

"Comrade, your question is very valuable and critical."

"But you can rest assured. With the coordination of the organization, we have already contacted our comrades from the Shanghai Naval Research Institute."

"The Naval Research Institute will use ship-level equipment to assist us in the production of gas exchange membranes. The current output is about 2,000 sheets per week."

"As for the equipment losses required to produce ten kilograms of enriched uranium by the end of the year, well, converted into a weekly value, it is about more than 1,400 sheets."

"So the current production capacity of gas exchange membranes alone can easily afford the refining of enriched uranium. At the same time, we have also made a long-term plan with the comrades of Mohai. In three months, the production capacity of gas exchange membranes can be expanded to more than 3,000 pieces. .”

I heard these six words: Shanghai Naval Research Institute.

Before the veteran expert who spoke spoke, a hint of obvious surprise appeared on Xu Yun's face.

Huh.

It's actually them?

This is an old acquaintance

Students with good memory should remember it.

In the real world that Xu Yun traveled through, Huadun Biotech once encountered an equipment crisis:

Nutrien refused to provide the production line of FOERDA-T632 sequence to Huadun Biotech and included it in the embargo list of the Wassenaar Agreement.

That production line is the core production equipment of "One Mantis". Without it, the entire product cannot be produced at all.

So Xu Yun went to Yongcheng in person and found Lin Zhenhua, the director of Hanhua Group, and took Lao Su to visit his grave.

In the end, Lin Zhenhua contacted a naval unit and used the navy's production equipment to create a set of modules.

And that naval unit happens to be.

The Naval Research Institute in Shanghai.

The result was unexpected.

In the current copy, Xu Yun unexpectedly heard their names again.

But this is normal.

The precision of gas exchange membranes is basically around the micron level. Nowadays, it is impossible for any ordinary state-owned enterprise in China to be able to do it. The target can only be the military industry.

And due to current circumstances.

At present, inland military industrial enterprises are either responsible for the production of various weapons, or are in the process of relocation in the third-line depth strategy, and it is basically impossible to free up too many manpower and equipment.

So naturally.

This production task fell into the hands of the Navy.

The Shanghai Naval Research Institute is now the top naval research unit in the country and is responsible for the research of various ships and even submarines.

Therefore, it is inevitable that gas exchange membranes will be produced from them.

"The output is more than 2,000 sheets per week?"

The old expert repeated the numbers reported by Yang Chengzong, quickly calculated in his mind, and finally nodded with satisfaction:

"That's enough."

This old expert's name is Yang Wei, and he was originally an engineer in charge of uranium enrichment-related projects at the Institute of Atomic Energy.

It was just that the bearing center of the base experimental group lacked experts two years ago, so Yang Wei was transferred to the 221 base.

However, the change of position does not affect Yang Wei's professionalism.

After a few simple mental calculations.

He then roughly judged that the figures given by Yang Chengzong could indeed afford the expected uranium enrichment and purification, and could even make a surplus.

And as Yang Wei spoke these words.

The matter of gas exchange membranes has come to an end for the time being.

Yang Chengzong and Qian Gaoyun quickly sat back in their seats, and the right to speak was once again handed over to Zhu Guangya.

"Ahem."

Zhu Guangya quickly cleared his throat and said to everyone in the audience:

"Comrades, thank you Comrade Yang Chengzong for your introduction."

"With the breakthrough in gas exchange membrane technology, we are now one step closer to the successful production of atomic bombs."

"But we have an old saying in China: He who travels a hundred miles has half a mile."

"It means that walking a hundred miles to ninety miles can only be considered half the journey. It means that the closer something is to success, the more difficult it is and the more seriously it must be taken."

Do not know why.

When explaining the meaning of this sentence, Zhu Guangya glanced at Li Jue.

Li Jue:

".?"

Then Zhu Guangya paused and continued:

"And when this sentence is applied to our atomic bomb project, it is related to the production of parts on the application side."

"The theoretical group led by Comrade Lu Guangda and others have completed the first ninety miles, and the remaining ten miles need to be completed by our comrades in the experimental group."

"That's why our meeting today is called a handover meeting. Firstly, it is a formal handover, and secondly, it is to allocate specific research and development tasks."

Say it.

Zhu Guangya winked at Lu Guangda who was in the audience.

When Lu Guangda saw this, he stood up and came to Zhu Guangya with a drawing rolled into a cylinder.

Zhu Guangya then stepped aside, assisted Lu Guangda to spread out the drawing, and then used four magnets to fix it on a prepared iron plate.

After fixation is completed.

"Comrades."

Zhu Guangya picked up a bamboo pole about thirty centimeters, pointed at the drawing and said:

"Comrades, as you can see, this is the specific structural diagram of the atomic bomb."

"Its structure from the inside to the outside is the ignition neutron source, which is specifically divided into the outer shell and the inner tank, followed by the nuclear charge uranium 235, and then"

Zhu Guangya had seen the structural diagrams of the atomic bomb many times before the meeting, so his introduction was extremely smooth.

Following Zhu Guangya's introduction, many experts at the scene quickly understood several core links:

Beryllium/Polonium Neutron Source,

The honeycomb cardboard spacer, also known as the air barrier, provides space for the critical collapse of the compressed uranium fuel after detonation.

U235 fuel layer ball fragments,

Polonium protective layer,

Explosive detonation drive mechanism, also known as plane wave generator.

Finally, there is the free neutron generation layer and the neutron reflection layer.

"First let's discuss the ignition neutron source."

I saw Zhu Guangya pointing the bamboo pole at the center of the atomic bomb again:

"The neutron source plus the injection device is our default ignition neutron source, which is the so-called nuclear trigger."

"Comrades from the Theory Department have already given a detailed plan for the specific principles of this part, which is to wrap the radium or polonium powder and beryllium powder separately in gold foil and then put them inside the atomic bomb.

"At first, the alpha particles released by radium or polonium will be blocked by the gold foil. During the explosion, the gold foil will be crushed. The radium/polonium powder will be in direct contact with the beryllium powder. When beryllium absorbs the alpha particles, it will release neutrons."

"As for the related characteristics of neutrons, they are still being studied at the tandem accelerator. The initial date is the end of November this year. More detailed results will be released probably from January to February next year."

As everyone knows.

U235 + neutron = barium 138 + krypton 95 + 3 neutrons

So strictly speaking.

When enough mass of uranium-235 is put together, the neutrons produced by decay are enough to trigger a chain reaction.

For example, a simple gun detonation uses two pieces of uranium below the critical mass to be dispersed and stored inside the atomic bomb.

When it's time to detonate.

By pushing one piece of uranium explosively against another so that it exceeds the critical mass, the two pieces of uranium decay and release enough neutrons to cause a chain reaction that triggers an atomic bomb explosion.

But there are some uncertainties in this method of detonation, so the first neutron in most atomic bombs comes from a neutron source.

And just like later generations of graphics cards can be divided into flagship and beggar's editions.

The neutron source can also be divided into flagship version and beggar version according to changes in actual conditions.

The representative of the flagship version is the spallation neutron source of later generations, which is owned by only four countries in the world.

Among them, the rabbits' one is called CSNS, with an investment of more than 2 billion, and it is located in Dongguan, a legendary city in Guangdong Province.

CSNS is also included in the ranks of the world's four major spallation neutron sources together with the British spallation neutron source ISIS, the sea-side spallation neutron source SNS and the neon spallation neutron source J-PARC.

Of course.

It should not be difficult to guess from the promotional template above that our CSNS can only be ranked fourth among the four major ones.

This is the unspoken rule of Xuanfa

And the Beggar’s Edition?

That would be much simpler.

Just like if you add three numbers and two letters at random, there is a probability of finding some kind of mysterious website.

Alpha radionuclide + beryllium is one of the typical formulas of a beggar’s neutron source.

For example, the combination of polonium and beryllium, radium and beryllium, etc.

These substances can be put together to produce neutrons. Some nuclear reactors in later generations have used this method, which is very cost-effective.

However, plans are plans, and the specific structure of the neutron source is definitely not as simple as using gold foil or only using gold foil as Zhu Guangya said.

"."

Zhu Guangya then left some time for the experts on site to think, and then turned his attention to a thin middle-aged man nearby:

"Comrade Wang Fangding, your team is equipped with the only helium mass spectrometer leak detector in the base. It has also been responsible for researching the 9501 project before and has rich experience in this area."

"So now the organization wants to give you this task. I wonder if you have the confidence to complete it?"

Swish——

Hearing Zhu Guangya's words.

A middle-aged man named Wang Fangding immediately stood up from his seat and straightened his back in an extremely serious tone:

"No problem! Director Zhu, I promise to complete the task!"

Xu Yun raised his head and glanced at this middle-aged man with a bit of a monkey spirit, and a hint of emotion suddenly appeared in his heart.

Wang Fangding's father is Wang Daozhou, a famous expert in gunpowder and internal ballistics in China. Wang Fangding began to work with gunpowder when he was five years old, and later became a well-known nuclear chemist in China.

Even in the original history, he was also the developer of the neutron source for China's first atomic bomb detonation.

However, he has always worked at the Atomic Energy Laboratory in the capital in his original history, and will not be transferred to Base 221 until three years later.

But with the launch of the [Tai Shang] project, Wang Fangding arrived at the base not long ago with a new batch of members.

However, what Xu Yun lamented was not Wang Fangding’s resume, but

When Mr. Wang was critically ill, he met Wang Fangding, who had the same surname as Mr. Wang, in the Gaogan Building of Yanjing Hospital.

At that time, Wang Fangding, the old man, was still in good health.

A 95-year-old man looks like he is in his early 80s. He doesn't even need help from others when he walks normally.

Now that he saw the young Wang Fangding in the dungeon, Xu Yun couldn't help but feel the emotion he felt when he saw Wang Yaoping and Wang Lao before.

Zhu Guangya seemed very satisfied with Wang Fangding's reaction. He turned to look at Qian Bingqiong aside:

"Comrade Bingqiong, look"

Qian Bingqiong nodded when he saw this, walked to Wang Fangding with a small box, and took out a few vials from it with great care:

"Comrade Fang Ding, this is the barium radium carbonate salt I brought back from France. I have been reluctant to use it for so many years. Now it is used where it is most needed."

"Barium radium carbonate?"

Wang Fangding was slightly startled when he heard this, and his breathing immediately became rapid.

I saw him holding the bottles in Qian Bingqiong's hands with both hands, looking at them carefully for a few times and then looking at Qian Bingqiong:

"Director Qian, these barium radium carbonate salts are..."

Qian Bingqiong turned his head and looked at Yang Chengzong, with a hint of recollection in his eyes:

"This is a gift my teacher gave me back then. It's the same as the one Chengzong brought back, both 10 grams."

Speaking of the history of China's nuclear industry, many people will think of Qian Bingqiong first.

But in fact.

Before Qian Bingqiong, there were two other people who had an extremely important but not direct impact on China's nuclear industry.

These two people are academician Yan Jici and Joliot Curie, the eldest daughter of Madame Curie.

Yan Jici went to Gaul to study in 1923 and entered Professor Fabry's laboratory and the Radium Institute chaired by Marie Curie.

In four years, Yan Jici and Madame Curie formed an extremely deep friendship.

After the death of Madame Curie.

Yan Jici also maintained long-term contact with Madame Curie's daughter and Joliot Curie.

Later, relying on this relationship, Yan Jici was able to recommend Qian Bingqiong and Yang Chengzong to Joliot Curie's research institute.

Qian Bingqiong and Yang Chengzong received an extremely sufficient knowledge education from Joliot Curie. This knowledge later basically became the theoretical cornerstone of China's nuclear industry.

Also before leaving Gaul.

Joliot Curie also presented 10 grams of barium radium carbonate to Qian Bingqiong and Yang Chengzong respectively.

The only difference is.

Qian Bingqiong's share of barium radium carbonate was an unsolicited gift from Joliot Curie, which can be regarded as a pure gift between teacher and student.

Yang Chengzong's share was given to him for free by Joliot Curie after he expressed his willingness to buy it in response to Qian Bingqiong's request in the letter.

After these two barium radium carbonates came to China, they played an extremely important role in the research of Chinese nuclear physics.

Yang Chengzong's barium radium carbonate salt became the "heart" of the equipment during the repair process of the radon extraction device that Yang Chengzong took out from Union Hospital eight years ago at the cost of blindness.

Since then, rabbits have been able to measure relevant fixed-value data such as the appropriate energy band of radium, and can extract a small amount of alpha radionuclides.

Qian Bingqiong's barium radium carbonate became the material for the neutron source of the rabbits' first atomic bomb.

However, this time is not a year ago as many marketing accounts say, but September two years later - the calcium oxide crucible will not be developed until next year. I don’t know why even The Paper will report it. last year.

His eyes returned to reality.

After looking at the barium radium carbonate salts, Wang Fang carefully put them back into the iron box.

But this time, he didn't express any determination.

Actions are more meaningful and valuable than words.

And the other side.

Zhu Guangya also withdrew his gaze and turned to look at the scene again:

"Since Comrade Wang Fangding is responsible for the research and development of the neutron source, will any comrades come forward to produce the next honeycomb cardboard spacers?"

Zhu Guangya just finished speaking.

A bald man immediately stood up in the crowd:

"I come!"