Reborn and become a Great Scientist

Chapter 412 151 Call from Stockholm

Of course Chen Muwu knew what the two missing relative atomic masses that Frederick was talking about were.

When designing this experiment, Chen Muwu had already imagined this situation.

What he was thinking about was that there was no piece of paraffin behind that could be bombarded with protons by neutrons. The new particle neutrons would probably not be discovered by humans for a while.

Unexpectedly, Frederick calculated the relative atomic masses of the two missing atoms through the difference in relative atomic masses before and after the reaction.

"Frederick, I'm trying to do this experiment right now. Although the question you raised is very good, I think I can put it aside for a while. After I finish the experiment, we can do more in-depth research. Woolen cloth?

"Take this opportunity to clear out this paragraph of relevant content in the paper first, and finish writing the other parts."

"Okay, okay, I just suddenly discovered this situation while doing calculations. I'm afraid you don't know about it, so I came to tell you about it.

"Now that you understand it, you should do your experiment first, and we will discuss it together after the experiment is completed."

After saying these words, Frederick left knowingly.

The experiment of bombarding molybdenum-96 with deuterium nuclei is much simpler than the previous experiment of bombarding bismuth-209 with alpha particles.

The reason is that the product of the experiment, element 97, manganese-, is also a radioactive element, but its half-life is more than two million years, which is actually much more stable than element , iodine.

Therefore, Chen Muwu does not need to extract the experimental product iodine from the mixture and complete the test within a few hours after the end of the experiment, as he did in the previous experiment of bombarding bismuth metal with alpha particles.

He could even take this product on a global trip, covering five continents and seven oceans, and then return to the laboratory at the Prince's College in Stockholm to conduct chemical properties tests, and still be able to conclude that the experimental product is a similar product. Manganese this result.

In order to ensure that the experiment he conducted this time was more in line with human rational thinking, Chen Muwu first fixed the metal molybdenum on the target outside the cyclotron exit, and then filled the proton source with hydrogen.

He planned to bombard it with protons first in a pretentious manner, and then use deuterium nuclei in the subsequent experiments. This would not only serve as a control group experiment, but also obtain the experimental phenomena he wanted.

Anyway, in Stockholm, his own territory, with the support of the Swedish Crown Prince and the Wallenberg family, two major financial backers, Chen Muwu no longer has to worry about the cost of the experiment, and can relax and allow enough protons to bombard the metal molybdenum. On target.

After completing the proton bombardment experiment, he followed suit and conducted an experiment in which deuterium nuclei were used to bombard a metal molybdenum target.

After completing these two experiments, Chen Muwu took the products of the two experiments to find Professor Biermann, the chairman of the International Union of Pure and Applied Chemistry, who was still staying in Stockholm to write the paper.

"Professor Bierman, these are the two products of my experiment. Do you think they contain manganese-like elements?"

On the tray held in Chen Muwu's hand were two pieces of silver-white metal.

They look the same as they did before they were put into the cyclotron.

Bierman, who had just finished writing a paper on iodine-like elements, was really shocked by Chen Muwu's experimental efficiency: "Dr. Chen, did you finish the experiment so quickly?"

Chen Muwu nodded: "Well, you have seen the experiment of bombarding bismuth metal with alpha particles before. In fact, the experiment on the cyclotron is not complicated. What is complicated is how to test the experimental products after the experiment is over. .

"Thankfully, Professor, you are still in Stockholm, otherwise, I would have had a headache over this matter again."

Hearing Chen Muwu praise himself in this way, Bierman himself was very embarrassed: "Dr. Chen, you are too polite.

"Then please leave these two products with me for the time being. I will design experiments and test them. What do you think?"

"That would be great. With you doing this experiment, I can be confident that accurate results will be obtained.

"In this case, I will write this experimental report and start preparing a new experimental paper.

"If there is something wrong with the product, professor, please come back to me. This newly established laboratory at Prince's College may lack everything, but as long as there is a cyclotron, hydrogen, deuterium and metal molybdenum, There will definitely be no shortage of experimental products.”

Bierman still couldn't help but ask: "Dr. Chen, do you really believe that manganese-like elements can be produced from molybdenum metal using a cyclotron?"

"Maybe," Chen Muwu smiled mysteriously, "Now that the experiment has been done, it is up to you, Mr. Bierman, the chemistry professor, to test whether the new elements exist.

"I hope that manganese-like elements can really exist in experimental products. If the iodine-like synthesis method cannot be accepted by the chemical community and chemists. If I use the same method to synthesize manganese-like elements, it will Wouldn't it change the minds of chemists?"

The more Chen Muwu smiled, the more Professor Bierman felt that the middle-aged man in front of him was unfathomable.

I just said that the paper discovering iodine-like elements may not be accepted by the mainstream chemical community and published by the most famous chemical journals.

This Dr. Chen Muwu first founded a "Journal of Prince's College" to publish his own papers, and then used this method of accelerating particles to bombard target elements with a cyclotron to discover a new element in an attempt to single-handedly Confront the entire chemical community and reverse the conventional wisdom everyone holds.

Bierman didn't know anything else, but he knew that if he successfully discovered the 43rd element manganese in the two new products sent by Chen Muwu, plus the previously confirmed element 85 Iodine-like, and after all the papers on these two elements are published in the "Journal of Prince's College", Chen Muwu's Prince's College, together with this journal of the college, will definitely become an instant hit.

Chen Muwu, who had delivered the product to Bierman, left, but he did not write the experimental report of this experiment and a paper on how to discover manganese-like elements, as he had told Bierman.

Chen Muwu got into his Volvo car again and went to the telegraph office closest to Prince's College.

How much he disliked cars of this era before, now they smell so good.

In an era when there were no traffic lights or traffic jams, driving a car through the streets of Stockholm and admiring the houses with dozens or hundreds of years of history on both sides of the streets was a pleasure to the eyes.

It's just that having to go to the telegraph office to send a telegram every time is a bit too troublesome after all.

Afterwards, just talk to little Marcus and ask him to connect him with a telegraph line at Prince's College, just like Bohr did when he was at the Institute of Theoretical Physics at the University of Copenhagen.

Chen Muwu came to the telegraph office this time not to take a telegram to the International Union of Pure and Applied Chemistry and ask them to send another expert to Stockholm to detect manganese-like elements - because the chairman of the Union, Professor Biermann, was already in Prince Edward In college. The telegram he sent was to his teacher Rutherford, the director of the Cavendish Laboratory at Cambridge University in England.

Although the price per billing unit (ten letters, excluding spaces) for telegraphs between Europe is not expensive.

But Chen Muwu only wrote a short line in the telegram——

"It is suspected that a neutron has been discovered. Come to Stockholm immediately. Chen."

Chen Muwu originally planned to build a cyclotron at Prince's College in Stockholm. After discovering the manganese-like element of the 43rd element or the iodine-like element of the 85th element, he followed the agreement between him and his teacher and returned to the Cavendish Laboratory. , where he used his own experiments long ago to "discover" the neutron again.

But Frederick has already calculated the "mass loss" of the two relative atomic masses before and after the reaction, although he has not yet associated these two relative atomic masses with neutrons, but with Einstein. Substitute into the mass-energy equation.

But this does not mean that he will not reconsider in a different direction after the mass-energy equation "doesn't work".

Neutrons, this mysterious particle, were what his teacher Rutherford wanted to find most in the last half of his life.

Moreover, during the years when Chen Muwu was at the Cavendish Laboratory, Rutherford treated him more than a master-student relationship, but more like a father and son.

A traditional person like Chen Muwu, who respected his teachers and respected his teachings, wanted to regard the discovery of neutrons as a gift to Rutherford, and also as a farewell before leaving the Cavendish Laboratory.

……

Cambridgeshire, UK.

University of Cambridge, Cavendish Laboratory.

Dr. Chadwick, the deputy to the laboratory director, walked into the director's office holding a telegraph newspaper with a grim expression.

Although there is no such thing as "the fewer words, the more serious it is", after reading this telegram sent from Stockholm by laboratory member Chen Muwu, Chadwick realized the information contained in this telegram and was very interested in the experiment. How important it is to Room Director Rutherford.

In the office, Rutherford, who had a big beard, was holding a pipe in one hand and a pen in the other hand, annotating the experimental reports handed in by the laboratory students.

He raised his head when he heard the sound of the office door being opened, and found that it was indeed Chadwick who walked in.

Although the Cavendish Laboratory is not a hierarchical place, there are only a handful of candidates who can enter the director's office directly without knocking on the door - there was a young Asian who left more than half a year ago and has not returned yet - Chad Wick is one of them.

"James, what's going on with your expression? What's that in your hand, a telegraph newspaper? What happened? Do you want a cup of tea to calm down? I asked someone to buy it from China Town in London. The best green tea I’ve ever received, a new product just launched this year.”

Seeing Chadwick entering the door as silently as Xu Shu entering Cao's camp, Rutherford couldn't figure out what was going on.

"Sir, Sir, Dr. Chen has sent you a telegram from Stockholm."

Chadwick handed over the telegram inside his hand.

Rutherford put down the pen in his hand, put the pipe in his mouth and took a deep breath, while taking the telegraph newspaper that was handed to him.

Let me see what surprise that little guy Chen Muwu brought me in Sweden?

Could it be that the "Journal of Prince's College" he runs is in urgent need of manuscripts and asked me to help him write a paper?

Rutherford curiously studied the contents of the telegram in his hand.

He spent five minutes reading just one line of text.

When he reacted, Chadwick was still standing motionless opposite the desk, and Rutherford's tone was slightly trembling: "James, James, call to book a ticket, the fastest one in Norwich Port." We need to pay for the ferry ticket departing from Stockholm, and book a train from Cambridgeshire Station to Norwich... Forget it, let Peter drive us. You go inform Peter, and then use half an hour to pack your luggage, and we will set off immediately!"

The distance by road from Cambridgeshire to the port of Norwich in northeastern England is less than a hundred miles.

If you take the train, you have to wait step by step for the train to depart according to the time on the timetable.

If you drive by car and take the highway, the journey takes about three hours.

"Yes!"

After accepting the task ordered by Rutherford, Chadwick immediately ran out.

Rutherford called home and asked his daughter Mary to help him pack his luggage for a week to half a month, and asked her to send the luggage to the Cavendish Laboratory immediately after packing.

Putting down the phone, Rutherford walked out of his office and went to Chen Muwu's office next door, where the owner was never in the Cavendish Laboratory, but the room was always lively.

He opened the door and called to Blackett, who was leaning on his desk writing something: "Patrick, come out with me."

"Je, Sir, what do you want from me?"

Blackett was confused. He had never seen such a look on Rutherford's face, which was always calm and composed.

"James and I are going on an emergency trip tonight. We may be back in a week, or maybe half a month. While the two of us are away from the Cavendish Laboratory, you and Peter will The two of them cooperate with each other and temporarily serve as the acting director of the laboratory."

"Please rest assured, Sir, we promise to complete the task and there will be no trouble in the laboratory. But, what happened?"

"Isn't Chen Muwu's Prince's College in Stockholm completed? He invited us to cut the ribbon for him."

Rutherford thought for a while and gave such a "lie" as his answer.

(End of this chapter)