94: From Technological Warfare to Space Empire

Chapter 124 Experiment Completed! The Fifth State of Matter!

Lin Yu said urgently.

"Near zero, the spin state of an atom is also uncontrolled and will flip randomly."

"This is wrong, this is wrong!"

"In this situation, some atoms will change from the trapped state to the escape state and escape directly."

"We thought that evaporative cooling could only drive away high-energy atoms, but in reality, many low-energy atoms also escaped due to spin inversion."

"

After hearing this, everyone suddenly understood.

Academician Zhou went to Lin Yu's side immediately.

He hurriedly asked, "How do we solve this?"

Lin Yu was so anxious he was pacing back and forth.

He had seen other later versions of the plan.

The options are either to use a time-level trap or to fill the zero plane of the magnetic field with a Lange laser.

But those all require additional equipment, and there's simply not enough time right now.

Current devices simply don't support these.

Otherwise, he wouldn't have proposed the magneto-optical trap solution.

Finally, under the expectant gazes of everyone, Lin Yu gritted his teeth and made the decision.

"We can't stop now."

"Let's use a deflecting magnetic field!"

"Add a uniform offset magnetic field to move the zero point of the magnetic field out of the atomic cloud region."

"By keeping the atomic cloud in a non-zero magnetic field, the self-selected state can be stably maintained."

This theory is extremely radical and audacious.

The experts frowned as they listened.

"Wouldn't that render the magneto-optical trap ineffective?"

Lin Yu, also conflicted, kept grinding his teeth and nibbling at the skin on his lips before finally speaking.

"We'll add it during the evaporative cooling phase, not now."

"After the magneto-optical trap is turned off, the atoms are transferred to a pure magnetic trap for confinement, and then a bias field is applied."

C

The group glanced at each other, and although they were somewhat puzzled, since Lin Yu had made the decision, they had to give it their full support.

So they got to work in full swing.

Tonight will be a sleepless night.

After the new plan is implemented.

Everyone was pacing anxiously in the lab, in the hallway, and outside.

Even Chief Hou's stockpile of cigarettes is running out.

Piles of cigarette butts were scattered outside the enclosed Chinese Academy of Sciences laboratory building.

Whenever someone is extremely anxious, they go outside and smoke three or five cigarettes.

Finally, with the implementation of the new scheme, the imprisonment time of the atomic cloud was extended by three times, and the efficiency of evaporative cooling reached the theoretical value!

The experiment continued until April 28, 1994.

During this period, all universities have been connected to the international Internet.

But Lin Yu and the professors had no interest in dealing with this matter at all.

Nobody went to experience the Internet.

At 3 a.m., Lin Yu was extremely sleepy.

But there was nothing he could do.

The experiment has been going on until now, when suddenly things changed.

He has to stay there at all times.

For researchers, when it's time for a key experimental point, everyone has to stay up all night.

Whether it's now in 94 or in the future.

Researchers are all night owls.

The main problem is that we've run out of options.

Lin Yu stood in front of the test broadcaster, staring at the data jumping on the screen.

Three hours ago, they began a new round of evaporative cooling.

According to the plan, this should be a decisive round.

Academician Zhou stared at the radio frequency instrument.

"The frequency has been swept to 2.5 MHz."

Lin Yu nodded without saying anything.

His eyes remained fixed on the image of the atomic cloud.

This image is obtained through resonant absorption imaging, which projects the atomic cloud onto a CCD, and then the CCD digitizes the image and projects it onto a screen.

At this point...

The naked eye can no longer keep up with the camera.

Now, each magnified pixel represents the state of hundreds of atoms.

The frequency is still decreasing.

2.3 MHz, 2.1 MHz, 2.0 MHz. Everyone's hearts trembled violently.

Many of the older professors felt they were about to be sent to the hospital because of atrial fibrillation.

But none of them dared to leave.

The reason we need to do this is because it's past 3 PM.

This is because the achievements of the previous stage were unprecedentedly ideal.

Lin Yu spoke up.

"Is the CCD camera ready?"

"The image must be recorded every 1/10th of a second from now on!"

Just as Lin Yu finished speaking, before anyone could agree...

The image of the atomic cloud on the screen suddenly changed.

A sharp peak suddenly appeared in the center of the originally rounded cloud.

The peak looked as if it had suddenly grown out of an atomic cloud, sharp and thin.

The surrounding area is a diffuse background of hot atoms.

For a moment, Lin Yu felt his breath catch in his throat.

Gritting his teeth, he calmed his voice, soothing everyone's emotions, reminding them not to open the champagne halfway through the event, and not to miss a single second of the changing images.

"Enlarge the image."

Although the professors and students were also trembling, they managed to control themselves and achieve Lin Yu's goal accurately and clearly.

When the image is magnified, the peak becomes clearer.

It is not symmetrical at all.

It is not a spherical symmetry of a hot atomic cloud.

It's like a sharp sword, piercing straight up the screen.

This is the state that matter exhibits at absolute zero.

This is what is known as superfluidity.

At low temperatures, a large number of particles will instantly gather into the same quantum state, forming an integrated aggregate that moves in concert.

Everyone in the laboratory was thrown into an indescribable panic.

Everyone looked at Lin Yu.

They never anticipated this situation would occur.

This is the BEC they crave.

At this moment, they were all as helpless as children just beginning their studies, longing for the teacher's affirmation.

Lin Yu subconsciously raised his hand to grab his eyes, trying to grab the eye sockets, wipe away the dust, and check if he had seen it wrong.

But he caught nothing.

He was nearsighted in his past life, but not in this one.

He hasn't revealed his habits from his past life for a long time.

But now, under extreme pressure, I can't help but recall the state of blurred perception of objects.

The peak on the screen remained unchanged.

Lin Yu recovered quickly.

Academician Zhou opened his mouth, but couldn't say anything.

Professor Yang was also staring blankly at the big screen.

Lin Yu stared at the peak, constantly calculating his understanding of it.

170 nanokJ. One seventeen millionth of a degree above absolute zero.

The atomic density is 10 to the power of 14 per cubic centimeter.

The momentum distributions of all anisotropic molecules conform to the theory.

All the features point to the same conclusion!

He turned around and looked at Academician Zhou standing behind him.

Academician Zhou kept putting his hand to his mouth, as if he was inhaling something.

But he didn't have a cigarette in his hand at all.

"Mr. Zhou, come and take a look."

Academician Zhou walked over slowly, as if confirming whether this was a dream.

Finally, he stood in front of the screen and stared at it for a full minute.

Then he turned around and met Lin Yu's gaze.

Together, they watched as the professors and students in the lab, their faces weary but their eyes shining brightly, announced: "It's done."

This is the fifth state of matter.

19

"Bose-Einstein condensate".