Not long after, Dean Yang took Chen Zhou and Yang Yiyi to the destination.

Yenching National Laboratory for Molecular Sciences.

Dean Yang is also the deputy director of the Nuclear Physics and Technology Laboratory here.

When he arrived here, Chen Zhou found that this topic was so big that even the national laboratory had done it.

In the laboratory, a group of white coats are in a hurry, very busy.

Because Dean Yang helped Chen Zhou and Yang Yiyi report in advance, the relevant review procedures were basically completed.

Therefore, the two of them were in the management of the laboratory, and basically did not delay much time, and they received the items needed for the laboratory work.

Then, Dean Yang led the two to the core area of the laboratory.

The people here are also the core team members of the Nuclear Physics and Technology Laboratory.

"This is Lin Xiaoen, your senior, Ph.D. in the Department of Physics of Yan University, this is Ma Zihao, your senior, Ph.D. in the Department of Physics of Mizuki, this is Peng Jia, your senior sister ......"

Dean Yang introduced them one by one.

And Chen Zhou and Yang Yiyi naturally greeted each other one by one.

Lin Xiaoen and the others also said enthusiastically: "I have long heard that Director Yang said that two newcomers would come over, but we have been looking forward to it for so long, but let us wait." ”

Peng Jia also said: "Yes, when Dean Yang said this, it seemed that you had just had a summer vacation. ”

Chen Zhou replied with a smile: "We have just finished military training, isn't this because Dean Yang has brought it here." ”

Lin Xiaoen looked at Chen Zhou and Yang Yiyi, and said with a smile: "I'll just say how you two are the same as when you came back from Africa, this tanned ......."

"Hey, Da Lin, pay attention to the words, there is a girl here!" Peng Jia glared at Lin Xiaoen.

"It's okay, senior sister, Senior Lin is right, the sun in this military training is too powerful, and it hasn't rained. Yang Yiyi smiled slightly, indicating that she didn't mind.

"Look, senior sister, senior sister said so......" Lin Xiaoen said.

Dean Yang glanced at a few people and interrupted, "Okay, no more gossip, how are the experimental preparations?"

Hearing Dean Yang's words, Lin Xiaoen and the others instantly put away their laughing expressions.

Lin Xiaoen and Ma Zihao glanced at each other, and Ma Zihao said: "Director Yang, the preparations for the experiment have been completed, and the experiment time is scheduled to officially start at 10 o'clock in the morning. ”

Dean Yang glanced at his watch, and there was still half an hour before ten o'clock: "Okay." You check the setup again to make sure the experiment is going well. In addition, Peng Jia, you take Chen Zhou and Yang Yiyi to familiarize yourself with the experimental process. ”

"Okay, Director Yang (Dean). The crowd responded in unison.

Subsequently, Lin Xiaoen and the others went to check the experimental device again according to the requirements of Dean Yang.

Chen Zhou and Yang Yiyi followed behind Peng Jia, wandering around the laboratory and familiarizing themselves with the experimental process of the particle accelerator.

"You all know the principle of the experiment, right?" asked Peng Jia as she brought the two of them to the accelerator.

Chen Zhou and Yang Yiyi both nodded.

Peng Jia glanced at the two of them and said softly, "Let's talk about it." ”

Chen Zhou and Yang Yiyi looked at each other, is this a test for us?

Chen Zhou winked at Yang Yiyi, Yang Yiyi understood, and said loudly: "The general principle of generating high-power particle beams is that the Marx generator conducts a resonant charge on the pulse formation line, and then discharges the diode through the transmission line, and the diode converts the electrical pulse energy into a particle beam. ”

Hearing Yang Yiyi's words, Peng Jia nodded, and then looked at Chen Zhou, as if waiting for his addition.

Chen Zhou smiled slightly in his heart, feeling that this senior sister was also interesting, and actually tested the two of them with this simple principle.

But this principle is really simple, and it has been finished by Yang Yiyi, what should he say?

Chen Zhou thought for a while, met Peng Jia's gaze, and said, "The working polarity of the diode depends on the electron beam or ion beam. When high pressure is applied to the diode, the surface of the cold cathode is microscopically raised, forming a 'whisker'. As a result of field enhancement, field emission is formed, and whisker explosions occur due to Joule heating, forming a plasma sheath near the cathode. ”

"Electrons are emitted from the plasma sheath, which moves towards the anode at a speed of 3-5 cm/μs. The flow of electrons in the cathode and anode gap is limited by the space charge, and when a strong current ion beam is generated, it is necessary to suppress the flow of electrons in the diode. ”

"The physical process of a diode involves solving Maxwell's equations and the equations of electron motion under complex boundary conditions......"

"Okay, let's take a look at the structure of this accelerator. Peng Jia interrupted Chen Zhou's words at the right time, and she was just on a whim, wanting to see the preparations of the two.

It's not that I don't believe in Dean Yang's vision, it's just that many people often can't understand the simplest principle.

"The experimental device, that is, the particle accelerator, corresponds to the principle just mentioned by the younger sister, which is mainly composed of magnetic pulse generators, double forming wires, pulse autotransformers, magnetic insulating diodes or electronic diodes. ”

Peng Jia said as she pointed to the big guy in front of her and introduced them to Chen Zhou and the others one by one.

Hearing Peng Jia's words, Yang Yiyi asked out loud: "Senior sister, this accelerator follows the traditional method of generating strong current pulsed particle beams?"

Hearing this, Peng Jia nodded lightly: "That's right, after storing the electrostatic energy, it will be released in a very short time, and the particle beam focusing technology will be used to produce a particle beam with high energy density." ”

After a pause, Peng Jia said with a smile: "I guess you can also see that although Director Yang sent you a lot of subject information, in fact, it really involves very little of the content of the experimental device. If you have any questions, just ask me now. ”

As Peng Jia said, most of the project materials sent by Dean Yang to Chen Zhou and the others were theoretical, and there was almost no content about the experimental device.

Otherwise, Yang Yiyi would not even know that the accelerator used in the experiment uses the traditional method of generating strong current pulsed particle beams.

Since Senior Sister Peng Jia has said it, Chen Zhou will naturally not miss the opportunity to ask questions: "Senior Sister, I just heard you say magnetic insulated diodes or electronic diodes, so which one are we using in this experiment?"

Peng Jia glanced at Chen Zhou, paused for about 3 seconds, and then said slowly: "The theory and numerical simulation of strong pinch focused diodes have always been a hot issue in the research of strong current pulsed particle beam technology in the world, and we are naturally not exempt from it. Specifically, I won't tell you more, you'll know later. ”

After speaking, Peng Jia continued to introduce Chen Zhou and the others to other auxiliary devices in the experiment.

These things are something that every experimenter must clearly understand and master.

At this time, Yang Yiyi whispered in Chen Zhou's ear: "You asked too quickly. ”

Chen Zhou was slightly stunned, and instantly understood.

It seems that he asked the key point of the experiment.