walk into unscientific

After figuring out how to "pay back" John Bull.

Li Jue and Lao Guo pushed Xu Yun's wheelchair and returned to their original positions.

Although everyone, including the young scholar who spoke out before, was eager to know what the countermeasures proposed by Xu Yun were.

However, the confidentiality they possessed through long-term scientific research at the base allowed them to curb the urge to ask questions.

The base will definitely tell them what they should know, and there is no need to forcibly ask them about what they should not know.

Anyway, judging from the expressions of Li Jue and Lao Guo, the plan proposed by Xu Yun should be highly feasible-this is enough.

After returning to the position.

Old Guo cast a look at Zhao Zhongyao [seven-percent ripe has already come up with a plan to drink a pot for the British guy, and I will tell you later to turn it on now and don’t force it], Zhao Zhongyao replied knowingly [You don’t even have punctuation marks. Believe it or not, I stuffed cockroaches in your wine bottle]—don’t ask them why they can communicate so much, it’s the tacit understanding between comrades.

Then Zhao Zhongyao took another deep breath, turned around to look at Xu Yun, and asked:
"Xiao Han, since we are going to test run this tandem electrostatic accelerator now, what high-pressure gas should we use instead of argon?"

"Maybe. Use helium or neon gas?"

Xu Yun shook his head when he heard the words, and explained to Zhao Zhongyao:
"Director Zhao, these two gases are not good either. Due to their structural problems, they will also appear abnormal in an environment of excessive gradients-this is a phenomenon discovered by the University of Cambridge in the original experiment."

"Although the specific mechanism that causes this abnormality is not yet known, common natural protective gases are basically ineffective."

Zhao Zhongyao said softly, and keenly noticed a word in Xu Yun's words:

"Xiao Xu, are you saying that natural gas is ineffective? Then artificial gas can be used in high-pressure generators?"

Xu Yun nodded towards him, considering that it wasn't because the end of the chapter was not easy to break the chapter, so he gave the answer directly;

"Yes, as far as I know, the high-pressure gas used by Cambridge University is artificially synthesized SF6."

SF6.

Its Chinese name is the famous sulfur hexafluoride.

This thing also has a nickname in later generations, called the Overlord of Insulating Gas.

The molecular structure of sulfur hexafluoride is a symmetrical octahedron, with sulfur atoms in the center and fluorine atoms at the six corners, and the S and F atoms are connected by covalent bonds.

Its equivalent diameter is 4, which is larger than that of water molecules, and sulfur hexafluoride with the same volume and pressure is 58 times heavier than air.

The six top F atoms are very active atoms. Outside the nucleus, the number of electrons in the inner shell is 2, and the number of electrons in the outer shell is 7. Only one electron is missing to achieve a stable electron shell distribution.

Students who are not mad at high school chemistry teachers should know it.

When the number of electrons in the outermost shell of the nucleus exceeds 4, it has the ability to absorb external electrons. As the number of electrons in the outer shell increases, its ability to absorb electrons also increases.

Therefore, the fluorine atom with 7 electrons in the outer shell has the largest electron affinity among the halogen elements, which is the so-called electronegative property.

The existence of this electronegativity gives sulfur hexafluoride gas excellent insulating properties.

When electron emission occurs between electrodes under a certain field strength, the free electrons between the electrodes will be quickly adsorbed by sulfur hexafluoride, which greatly hinders the development of the collision ionization process, causing the ionization degree between the electrodes to decrease and the ability to withstand voltage to increase.

Sulfur hexafluoride is an absolute leader in the field of insulation even in 2023 when Xu Yun travels through.

As far as the current trend is concerned, that is, fluoroketone mixed gas has the opportunity to challenge its position-this is only a possible trend.

The energy levels of the tandem accelerators of later generations basically start at tens of MeV, so the high-pressure gas they use is sulfur hexafluoride without exception.

More importantly.

Even in today's era of low technological level, the production process of sulfur hexafluoride gas is still quite mature:
It is an artificial inert gas synthesized by two Gallic chemists, Moissan and Lebeau, in 1900. Around 1940, it was used in the Manhattan Project across the sea, and it was commercially available in 1947.

By this year, more than 40 countries around the world have mastered the production process of SF6.

By the way.

Didn't the above say that the structure of this thing is a symmetrical octahedron?

Since the angle between the bonds of this substance is 103.5°, the covalent bond between the S and F atoms in its planar state would look a lot like a flagpole.

The six fluorine atoms on the top are like a flag, and the background color of most planes is also white. In addition, it was invented by the French, so many people also call it the white flag gas.
The line of sight returns to reality.

Sulfur hexafluoride gas rabbits have independently mastered the production process 9 years ago with the efforts of Academician Wang You, and now many regional factories are using sulfur hexafluoride, let alone the confidential hinterland of the 221 base.

Also coincidentally.

Liu Youcheng's chemical laboratory is also within the scope of No. 100 Branch Factory, only [-] meters away from Xu Yun's place.

So less than half an hour.

Zhao Zhongyao took Liu Youcheng and Wang Ganchang back to the scene, and said to everyone:

"Factory Manager, Lao Guo, Xiao Han, the sulfur hexafluoride gas has been pressurized and successfully introduced into the high-voltage generator!"

Li Jue's face relaxed when he saw this, and asked Xu Yun again:

"Xiao Han, now that the problem of high-pressure gas has been solved, why don't you check that device again?"

Xu Yun glanced at Li Jue with a smile, and nodded after a few seconds.

In fact, as far as the current situation is concerned, it is not necessary to check the equipment again.

After all, in addition to the high-pressure gas, the entire accelerator only has the ion source and a material supply module.

The rest of the parts are all real hardware, and it is impossible for the British to tamper with this kind of open link. After all, the two parties have signed the agreement in secret.

Again, some people may be bad, but they are not stupid.

Not to mention that if there is a problem with the hardware equipment, it is impossible for Zhao Zhongyao and Wang Ganchang not to find out.

The rest of the ion sources are provided by the base itself, and there is no possibility of being hacked.

However, considering that Li Jue, or in other words, all rabbits have a personality of seeking stability, Xu Yun decided to check again.

after an hour.

After the reexamination, Xu Yun followed Lao Guo, Zhao Zhongyao and others back to Li Jue.

At this time, everyone's location was also transferred from the warehouse where the 2.5MeV accelerator was located to the location of the tandem accelerator with an air shower.

Or it can also be called the Accelerator Research Center.

Then Xu Yun glanced at Li Jue and said:
"Director, Director Zhao and I checked again. Except for the high-pressure gas we discovered before, the other modules are all normal."

Li Jue nodded upon hearing this, and handed over the on-site command to Lao Guo:
"You Lai, laymen don't guide the insiders, and you are the next one to guide."

Lao Guo and Li Jue were considered old partners, and they were not polite when they saw this, and said directly to Zhao Zhongyao;

"Comrade Zhongyao, please inform Comrade Wang Jing to turn on the power."

Zhao Zhongyao said yes, walked quickly to the operating table, picked up the microphone and said:
"Xiao Wang, turn on the power!"

Hear this.

Having entered the main body of the device, which is the other side of the glass, Wang Ganchang, whose alias is Wang Jing, immediately gave Zhao Zhongyao a thumbs up, and at the same time pulled down a gate.

This gate is the main power switch of the accelerator. Because the accelerator has a huge load and is prone to tripping, someone must press the gate on site.

buzzing-

With the gate pulled down.

A low-pitched vibration gradually sounded in everyone's ears, as if someone had placed a vibrating egg on the wall next to your bedroom.

Followed by.

15 seconds later.

The first indicator light at the top of the console on the right came on.

This is the signal that the high-voltage generator starts to operate—of course, since there are no integrated circuits these days, this signal is only a reminder.

Under 5.2 atmospheres absolute.

462 kilograms of sulfur hexafluoride gas quickly filled the inside of the generator, and the transmission belt made of insulating material began to move continuously between the two rotating shafts, spinning, jumping, and I closed my eyes.
Another 30 seconds passed.

The source of negative ions produced by the rabbits themselves begins to deflect the magnet.

This is a tube-type ion source independently developed by the rabbits. Although it is worse than the Kaufman ion source across the sea and the Maoxiong Hall ion source, you must know that the ion source was born from Kaufman at this time. only three years
at the same time.

The operator's announcement also sounded on the console:
"Report! The deflection radius of the deflection magnet is R=11'', and the error with the expected set radius is 0!"

"Report! The mass resolution is about 17!"

"The electrospray needle is about to undergo corona discharge, count down to five! Five, four, three, two, one!"

pat-

With a crisp sound that everyone could hear, a switch on the tandem accelerator flicked open like a spring.

at the same time.

In the microscopic world that cannot be observed by the naked eye.

A beam of negative ions is accelerated from zero.

It is first ejected from the three-phase conduit of the ion source with an initial mass energy level of 2.7 MeV.

Then, under the action of the accelerating tube, their energy levels began to increase gradually.

3.7mev
9.3mev
12.3mev
19.4mev
23.8mev
When the negative ion beam is accelerated to 24MeV, its energy level has reached the upper limit - because the magnitude of the electromagnetic field is so large.

But at this time.

A strange thing appeared in front of this negative ion beam, that is,
High voltage generator.

Then, before the negative ion beam reacts, it enters the high-voltage generator body.

Then the countless negative ions in this negative ion beam suddenly discovered an extremely terrifying thing:
Under the action of the charge exchange chamber, their balls coughed, and the electrons in their bodies were stripped!

As a result, these countless negative ions abruptly turned into positive ions in an instant.

More importantly.
The acceleration principle of the tandem electrostatic accelerator relies on the magnetic field and the electric field. Therefore, when the particles are electrically transformed, the cations start a second round of acceleration—this acceleration is not returning to the original path, but continuing to move in the original direction, because Both ends of the accelerator are ground potential, and the middle is the high-voltage electrode. (Students who don't understand can understand by putting two cones together bottom-to-bottom.)
under the action of voltage.

It was found that the cations are good without the balls, and the cations began to let themselves go, and the speed became faster and faster, and finally came to
77.777MeV!

This energy level is already close to the limit of this tandem accelerator. After all, the so-called 80MeV is only a design level. In fact, due to the loss in various processes, it is impossible for particles to reach this number.

According to the experimental records of Cavendish Laboratory, University of Cambridge.

Before sending the accelerator to the CERN headquarters, the laboratory conducted a total of 17 collision experiments, the highest level of which was only 76 MeV, and the lowest level was only about 50 MeV.

The positive ion beam that has reached the limit quickly passed through the analyzer outside the steel cylinder (that is, the thing on the weather Doppler radar), and then passed through a section of beam transportation pipeline, and finally hit the solid target exactly .

This solid target is also a tool made by the base with the assistance of Xu Yun. The main process is to deposit lithium on the substrate with zinc, which is a very simple target making technology.

However, the reaction threshold energy of this hybrid target is lower than that of common beryllium targets, and the resonance peak is about 17.5 MeV, which is quite friendly to the current rabbits.

At the same time the cation beam hits the target.

drop--

The last indicator light on the console also lights up at the same time, and a softer, long-lasting and uninterrupted beep sounded throughout the operating room.

When Zhao Zhongyao and others saw this, their chests immediately relaxed.

According to the British supporting operation manual records.

After the tandem accelerator completes the collision, there may be two beeps:

If the sound is short and spaced [Dididi], it means that the positive ion beam is skewed and did not hit the target.

This is actually a very common thing in this era. After all, the reason why particle acceleration in later generations is accurate is because of the assistance of the focusing system. This step requires at least two quadrupole magnets to form a structure called a FODO cell - which is what Xu Yun did in 1850. The thing that the dungeon did.

However, the technology of this year is obviously not as complete as that of later generations. Although some big shots also thought of magnetic field focusing, the effect is not ideal due to technical limitations.

Generally speaking, if you have ten particle collisions, half of them will be successful.

And once the collision is successful, that is, the ion beam hits the target, the console will sound a continuous sound similar to a whistle, and there will be no sign of interruption during the period.

The prompt sound at the moment obviously belongs to the latter, in other words.
The first high-energy (really high-energy for this era) experimental trial run of Base 221 did not have any accidents during the process!
However, not long after Zhao Zhongyao's excitement passed, he was startled by Lao Guo's words:
"Zhongyao, what's the result of the collision? When will the result of the collision be available?"

"Such a high-level collision has never been carried out so far. If we are lucky, will there be something that we have not been able to find before?"

Hear this.

Swah——

Zhao Zhongyao turned his head in an instant, and his eyes were fixed on the glass opposite the glass, which was carefully removing a metal plate.
Wang Ganchang!
Note:
On the 18th, more changes will be added, and the vest defense battle will start again!