Xueba starts with change

Chapter 353 This is the Physical Problem

As for the optimal design of diodes, Chen Zhou can be said to have certain experience.

After all, it has the accumulation of previous particle accelerator experiments.

But this experience is still very limited.

Because the previous particle accelerator experiments studied the intense pulsed particle beams through the experimental effects of different diodes.

It does not involve the optimal design of different diodes, or the optimal design of a specific type of diode.

According to Chen Zhou's research experience during this period, the optimal design of diodes is actually the principle and application of intense pulsed particle beams. A small topic in this big topic can be regarded as a subdivision of it.

Chen Zhou felt that this was also the reason why Dean Yang asked him to choose this as a graduation project.

There is potential and accumulation, and it is not too difficult.

Moreover, you can borrow it from Dean Yang at any time for the laboratory.

Dean Yang has already said hello to this point.

As long as Chen Zhou needs it, he can go to him at any time, and he will arrange things in the laboratory.

In this regard, Chen Zhou was very pleased.

He always felt that he had been tricked by Dean Yang.

And the arrangement of the laboratory is what Dean Yang made up for because of his guilt.

After going to the cafeteria for lunch, Chen Zhou returned to the library to continue the research on the optimal design of particle accelerator diodes.

The overall theoretical research process has been proceeding according to his plan.

If nothing else happens, Chen Zhou will be able to settle the theoretical results of the optimization design this afternoon.

Then I went to Dean Yang to borrow the laboratory and started the stage of experimental verification.

By the time the experiment is over, the subject will basically be over.

Turning on the computer and flipping through the draft paper, Chen Zhou was not in a hurry to finish the experiment, but reorganized the previous research materials.

He wanted to see if there was anything he could adjust, if there was anything he had overlooked.

In other words, is there any deeper meaning for the optimized design of the diode?

The thick stack of draft paper is the result of Chen Zhou's long-term research.

When the topic is determined, he also determines the research direction.

The first is to simulate and calculate the field strength distribution of cathode emitters with different configurations of diode structures, and obtain a diode model in which the field strength of the cathode emitter surface is relatively uniform and the emission electric field strength is moderate.

Here, the finite-difference time-domain particle simulation program for simulating plasma physical processes in two-dimensional space is used for calculation, that is, MAGIC.

The electromagnetic field at any point in the simulated space is obtained by solving Maxwell's equations.

In addition, using the complete Lorentz force equation, the trajectory of relativistic charged particles can be solved.

After obtaining the diode models, these diode models are used instead of the original diode structure to carry out experimental research on particle accelerators to obtain a diode structure with the best experimental results.

On this basis, several kinds of velvets, that is, cathodes containing velvet emitters, were analyzed by scanning electron microscopy, and experiments on particle generation performance were carried out.

The result was a diode with a suitable velvet cathode, with the best experimental results, and the beam current of the generated particle beam.

The overall idea, direction, and method are very simple, but Chen Zhou is obviously not the kind of person who is only willing to do simple subjects.

During the research process, through the divergence of his thinking, he expected to connect with the content of previous particle accelerator experiments.

On the whole, no matter it is a big project or a small project, there are not too many technical difficulties in it.

It is more of a process of inquiry, exploring the expected result.

Unlike many physics topics, it is necessary to focus on solving the technical difficulties of this topic during the research process.

When the difficulty is overcome and the result comes, it will be smooth and natural.

Just like the research of controllable nuclear fusion, the technical route and theoretical knowledge are not difficult.

In other words, under theoretical conditions, it is completely achievable.

What is difficult is how to solve the magnetic field confinement problem of the plasma, and when the plasma disintegrates, what materials can cope with the high temperature of up to 3000°C.

This is the technical difficulty in the research process, and it is also a difficulty that controllable nuclear fusion has been unable to break through for a long time.

While sorting out the previous research materials, Chen Zhou recorded his thoughts on a new draft paper.

These thoughts are not necessarily related to this topic, but they are all things that Chen Zhou finds interesting.

Just like, can we find the most suitable diode, which can not help but meet the needs of previous particle accelerator experiments, and also meet the needs of surface modification of metal materials, and better meet the needs of the current project?

It was not until around 04:30 in the afternoon that Chen Zhou sorted out the previous research materials from beginning to end.

At the same time, he also identified the diode model that needs to pass the particle accelerator experiment.

Looking at the three diode models on the draft paper, the corners of Chen Zhou's mouth rose slightly.

Pick up a pen and circle one of them.

That one was specially prepared by him for his graduation project, and the other two, on the one hand, are for comparison with the circled one, and on the other hand, they are to verify Chen Zhou's own interesting ideas.

"It's time to go to Dean Yang to borrow the laboratory. After all, this thing is much simpler than Jebov's guess..."

While packing up his things, Chen Zhou sighed with emotion.

What he didn't know was that if Dean Yang heard this, he probably couldn't help but roll his eyes.

After all, in a sense, this topic can be regarded as a sub-item of national-level topics.

This difficulty, will it be easy?
Unfortunately, Chen Zhou didn't think so.

He felt that perhaps only those physical subjects that theoretically need to solve difficult problems can be compared with Jebov's conjecture.

For example, can all dimensionless parameters expressing the characteristics of the physical world be calculated in principle, or are there some parameters that only depend on history or accidental events in quantum mechanics and thus cannot be calculated?

This sentence seems complicated, but in simple terms, does God have a choice when creating the universe?

Imagine God sitting in front of the console, ready to trigger the Big Bang, did God think about these questions.

"What should I set the speed of light at?"

"How much charge should I let this small point called an electron carry?"

"What value should I set for Planck's constant?"

Or, did God randomly grab a few numbers in order to hurry up?
Or do these numbers have to be because there's some logic behind them?

In Chen Zhou's perception, this is the problem, okay?

It must be the most interesting thing to study such a problem.

This is the physics problem, this is the interesting part of physics!
Looking at the draft paper that was about to be put into the backpack in his hand, Chen Zhou felt that it didn't smell so good anymore.

Of course, after thinking about it, if Chen Zhou is really asked to open such a subject now, most people probably think he is crazy...

He himself estimated that he would soon turn into Zhang Zhongyuan's appearance, and then he would really become what Zhang Zhongyuan said, "Have the demeanor of my youth!"

After packing up his things, Chen Zhou left the library and headed towards the administrative building of the Museum.

(End of this chapter)