Volume 1: Student Life Chapter 198 Breaking down time
Chen Zhou dragged the compressed package into a specially created folder and then began to decompress it.
"Huh? Password?"
Chen Zhou didn't expect that Dean Yang had encrypted this compressed package.
But if you think about it carefully, generally speaking, such topics are projects of the Institute of Physics and have a certain degree of confidentiality, which is normal.
Chen Zhou took out his cell phone and prepared to call Dean Yang to ask for the password.
However, before the call was made, Dean Yang sent another txt document.
After Chen Zhou received it, he opened the document and found the decompression code of the compressed package [DZS1].
Enter the decompression code and the compressed package will be decoded successfully.
After opening the unzipped folder, Chen Zhou was stunned.
My goodness, is Dean Yang worried that he will be too idle at home during the summer vacation? Or is he worried that he will be obsessed with hail speculation and unable to extricate himself?
In the folder named "Principles and Applications of Intense Pulsed Particle Beams", there are dozens of folders of various sizes, and there are folders in the folders...
"No wonder it took so long to download. There must be too much research material for this project, right?" Chen Zhou muttered to himself. He slid the mouse and opened a document.
【High Power Particle Beams and Their Applications】
Chen Zhou took a closer look.
High-power particle beams are generally called high-intensity relativistic particle beams, including electron beams and ion beams.
This is a not-so-old concept.
Chen Zhou remembered that he had read in a document that the concept of high-current relativistic electron beam was proposed in the 1950s.
By the end of the 1980s, the pioneering work of Professor Martin in the UK made the practical application of high-current relativistic electron beams possible.
However, the research background of these thirty years was under the condition of a rapidly changing international situation.
In the early 1960s, Professor Martin and his team at the UK Atomic Weapons Research Centre first proposed the use of pulsed power technology to generate high-power electron beams.
And he successfully applied transmission line technology to the research of pulse power, thus creating a new situation in pulse power technology.
It was also from this time that high-power electron beam accelerators began to develop as a source for simulating nuclear weapon effects.
In the late 1970s, with the proposal of particle beam inertial confinement fusion, high-power particle beams began to develop towards higher power levels.
Over the years, the major laboratories of major international powers have built a large number of generating devices.
China's research on high-power electron beams began with the development of pulsed X-ray machine technology in the early 1960s, and in the late 1960s, research on nanosecond pulsed high-voltage technology began.
It was not until the 1970s that China officially turned to the development of high-power pulsed electron beam accelerators.
Now, high-power electron beam and ion beam technology have been applied to many scientific research fields.
Such as nuclear explosion simulators, high-energy flash X-ray photography, internal electromagnetic pulse research, inertial confinement fusion, excitation of free electron lasers and high-power gas lasers, etc.
Its derived emerging disciplines also include radiation-resistant electronics, relativistic electronics, high-intensity beam physics, etc.
In general, high-power particle beams are currently a relatively active frontier science and technology, and they are also an important technical basis for high-power laser research.
Retracting his thoughts, Chen Zhou continued to look at the documents in front of him.
It was not until noon that Chen Xiao came and knocked on the door, calling him to eat.
Chen Zhou finally came back to his senses from the world of particle beams.
Chen Zhou didn't get up in a hurry. He just turned around and said something to Chen Xiao and came over immediately.
Turning back, Chen Zhou looked at the documents on the computer in front of him, thinking slightly.
For him, the difficulty of Dean Yang's topic this time was a bit beyond the scope of the assignment.
Although Dean Yang said that he would only be responsible for processing the data of the project and making use of his strengths in rigorous mathematical calculations.
But Chen Zhou is not so foolish as to think that the problem can be solved by just drawing some formulas and calculating the data.
Besides, this is not his style.
Now that you have joined the research group, you must do your best.
Chen Zhou's current attitude is optimistic and positive. He doesn't know when this mentality began to gradually change.
After thinking about it, Chen Zhou felt that it was still necessary to make a plan when things piled up, just like before.
The benefits of this are, firstly, that you can know the specific progress of each thing, and secondly, that you can allocate time reasonably.
"Xiao Zhou, come and eat!"
"good!"
After organizing the notes he made while reading the literature, Chen Zhou stood up and walked out of the room.
Zhang Hongying prepared another sumptuous lunch.
While eating, Chen Zhou felt that he was clearly eating the whole time, but the amount of food in the bowl seemed to have never decreased?
Sure enough, for children at home, the only thing they do is eat more and gain more weight.
Chen Zhou couldn't help but worry, would he have a double chin when he returned home after this summer vacation?
After dinner, Zhang Hongying and Chen Jianguo went to work.
The tasks of clearing away the dishes and washing the dishes were undertaken by Chen Zhou and Chen Xiao respectively.
"Brother, I don't quite understand a question. Can you explain it to me later?" Chen Xiao, who was washing dishes, spoke to Chen Zhou.
Chen Zhou nodded: "Okay, is that the book you opened?"
Chen Xiao: "It's that book. I circled that question."
"Let me take a look first. Come over after you finish washing the dishes."
"good."
Chen Zhou walked to the table, picked up the document that Chen Xiao had spread out on the table, and started reading.
On the document, Chen Xiao circled a question with a red pen.
It's a proof question, and the title is not long.
[Assume that n is a positive integer, a1, a2, ..., an, b1, b2, ..., bn, A, B are all positive real numbers, satisfying ai≤bi, ai≤A, i=1, 2, ..., n, and b1b2···bn/a1a2···an≤B/A. ]
【Proof: (b1+1)(b2+1)···(bn+1)/(a1+1)(a2+1)···(an+1)≤(B+1)/(A+1). 】
After reading the question, Chen Zhou already had an idea.
After reading the question again, Chen Zhou chuckled. This question was indeed a bit difficult for Chen Xiao, a high school student who had just graduated from the junior high school entrance examination.
At this time, Chen Xiao had finished washing the dishes and walked over.
He picked up a piece of draft paper on the table and handed it to Chen Zhou: "Brother, I can only calculate this problem up to this point. Take a look and see if the previous ideas are correct?"
Chen Zhou took the draft paper and took a look at it.
Well, this guy is not bad, and his previous idea is correct.
It’s pretty good to be able to answer this question.
"Yes, this problem is difficult. It's rare that you can calculate it to this point. It's even better than high school students. Very impressive!" Chen Zhou naturally would not be stingy with his praise.
Hearing Chen Zhou's praise, Chen Xiao couldn't help but smile.
He still appreciated his brother's praise.
Chen Zhou naturally noticed Chen Xiao's expression. He smiled and said, "Don't be proud. Come, I'll help you sort out your thoughts."
After saying that, Chen Zhou picked up a pen and began to write on the draft paper, following Chen Xiao's calculations.
Chen Xiao restrained his expression and looked at it seriously.
