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

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

He thought that he didn't put a piece of paraffin in the back that could be bombarded by neutrons to shoot out protons, and the neutron was probably a new particle that would not be discovered by humans for a while.

Unexpectedly, Frederick calculated the two relative atomic masses that disappeared by using the difference in relative atomic masses before and after the reaction.

"Frederick, I'm thinking about doing this experiment now, and although the question you raised is very good, I think it would be okay to put it aside for a while, and when I'm done with the experiment, let's do a little more in-depth research?"

"Take this opportunity to empty this paragraph on the paper first, and finish the other parts."

"Okay, okay, I just suddenly found out that there is this situation when I was calculating, I'm afraid you don't know about it, so I'll tell you about it.

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

With these words, Frederick walked away with amusement.

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

The reason is that the product of the experiment, element 43, manganese-97, although it is also a radioactive element, has a half-life of more than 2 million years, which is indeed much more stable than the element 85 iodine.

Therefore, Chen Muwu does not need to do the previous experiment of bombarding bismuth metal with alpha particles, and must extract the iodine-like product from the mixture within a few hours after the end of the experiment and complete the test.

He could even take the product on a trip around the world, traveling to five continents and seven oceans, and then return to the laboratory at Prince Stockholm's College to test the chemical properties, and still be able to conclude that the experimental product is manganese-like.

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

He was going to pretend to bombard with protons first, and then use deuterium nuclei in the following experiments, so that he could not only act as a control group experiment, but also get the experimental phenomenon he wanted.

Anyway, in Stockholm, his own territory, with the support of the Swedish crown prince and the Wallenberg family, Chen Muwu no longer has to worry about the cost of the experiment, and can rest assured that enough protons will bombard the metal molybdenum target.

After the bombardment experiment of protons, he drew a scoop with a gourd and did an experiment of bombarding a metal molybdenum target with deuterium nuclei.

After these two experiments, Chen Muwu took the results of the two experiments with him to find Professor Bierman, the president of the International Union of Pure and Applied Chemistry, who still stayed in Stockholm to write his paper.

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

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

They don't look the same as they did before they were placed in the cyclotron.

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

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

"It's a good thing you're still in Stockholm, Professor, otherwise I'd have had a headache about it again."

Hearing Chen Muwu praise himself like this, Bierman himself was also embarrassed: "Dr. Chen, you are polite."

"Then please leave these two pieces of product with me for the time being, and I will design an experiment and test it, what do you think?"

"That's great, because with you doing this experiment, I can be confident that the results will be accurate.

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

"If something goes wrong with the product, please come back to me, professor. The newly established laboratory at Prince College may lack everything, but as long as cyclotrons exist, with hydrogen, deuterium, and molybdenum metal, there will be no shortage of experimental products. ”

Bierman couldn't help but ask: "Dr. Chen, do you believe that using a cyclotron, you will definitely be able to make manganese-like elements from metal molybdenum?" ”

"Perhaps," Chen Muwu smiled mysteriously, "Now that the experiment has been made, then the next matter of testing whether the new element exists is the matter of you, Mr. Bierman, a chemistry professor."

"I hope that manganese-like elements can really exist in experimental products, if the synthesis method of iodine-like is not acceptable to the chemical community and chemists. If I synthesize manganese in the same way, will it change the way chemists think? ”

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

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

Dr. Chen Muwu first founded a "Journal of Prince College" to publish his papers, and then used this cyclotron to accelerate particles to bombard target elements to discover a new element, in an attempt to single-handedly fight the entire chemical community and reverse the traditional view held by everyone.

Bierman didn't know anything else, but he knew that if he succeeded in discovering the No. 43 element manganese in the two pieces of products sent by Chen Muwu, plus the No. 85 element iodine that had been confirmed before, and all the papers on these two elements were published in the "Journal of the Prince College", Chen Muwu's Prince College, together with the journal of the college, would definitely be an instant hit.

Chen Muwu, who had delivered the product to Bierman, left, but instead of writing the experimental report and the paper on how to discover manganese-like elements, as he told Bierman.

Chen Muwu got into his Volvo car and went to the nearest telegraph office to Prince College.

How much he hated the cars of this era before, how fragrant they are now.

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

It's just that every time I have to go to the telegraph office to send a telegram, after all, it's a little too troublesome.

Later, talk to Marcus Jr. and ask him to pull a telegraph wire for himself 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 send a telegram to the International Union of Pure and Applied Chemistry and ask them to send another expert to Stockholm to do manganese-like testing,—— because the president of the association, Professor Bierman, was already in the Prince's College.

He sent this telegram to his teacher, Rutherford, the director of the Cavendish Laboratory at the University of Cambridge in England.

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

But Chen Muwu only wrote a short line on the telegram -

"If you suspect neutrons, come to Stockholm. Old. ”

Chen Muwu originally planned to build a cyclotron at the Prince's College in Stockholm, but after discovering the No. 43 element manganese or the No. 85 element iodine, he followed the agreement with his teacher and returned to the Cavendish Laboratory, where he used the experiments he had already done to "discover" the neutron.

However, Frederick had already calculated the "mass deficit" of the two relative atomic masses before and after the reaction, although he did not associate these two relative atomic masses with neutrons, but with Einstein's mass-energy equation.

But that doesn't mean he won't reconsider the mass-energy equation in a different direction after the "no way".

The neutron is a mysterious particle, but it is the one that his teacher Rutherford wanted to find most in the last half of his life.

Moreover, during Chen Muwu's years in Cavendish Laboratory, Rutherford treated him more than a master and apprentice, more like a father and son.

A traditional person like Chen Muwu wanted to see the discovery of the neutron as a gift to Rutherford, and as a farewell before he left the Cavendish laboratory.

……

Cambridgeshire, United Kingdom.

Cavendish Laboratory, University of Cambridge.

Dr. Chadwick, the lab director's deputy, walked into the director's office with a telegram with an unkind face.

Although there is no such thing as "the fewer words, the more serious", after reading the telegram sent from Stockholm by Chen Muwu, a member of the laboratory, Chadwick realized how important the information contained in this telegram was to Rutherford, the director of the laboratory.

In his office, the bearded Rutherford was holding a pipe in one hand and a pen in the other, annotating the lab reports handed in by the students in the lab.

He looked up at the sound of the office door being opened, and saw that it was Chadwick who had walked in.

Cavendish Labs is not a hierarchical place, but there are only a handful of people who can enter the director's office without knocking — Chadwick is one of a young Asian who left more than half a year ago and has not ——,returned.

"James, what's going on with your face? What do you have in your hand, the newspaper? What's going on? Do you want to have a cup of tea to calm down, I'm asking someone to buy the best green tea from London's Middletown, a new product that just hit the market this year. ”

Seeing Chadwick who entered the door like Xu Shu who had entered Cao Ying, he didn't say a word, and Rutherford couldn't understand what the situation was.

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

Chadwick handed over the telegram in his hand.

Rutherford put down his pen and took a deep puff as he put his pipe in his mouth as he took the telegram that was handed to him.

Let me take a look at Chen Muwu's little guy, what surprise did he bring me in Sweden?

Could it be that he ran the "Journal of Prince College" and urgently needed a manuscript, so let me help him write a paper?

Rutherford looked at the contents of the telegram in his hand with curiosity.

In just one line of text, he read it for a full five minutes.

When he reacted, Chadwick was still standing motionless on the opposite side of his desk, and Rutherford's tone trembled slightly: "Jen, James, call to book tickets, book the fastest ferry ticket from Norwich Port to Stockholm, and book a train from Cambridgeshire Station to Norwich...... Forget it, let Peter drive us. You go and inform Peter, then you have half an hour to pack your bags, and we're off at once! ”

From Cambridgeshire to the port of Norwich, northeast England, the distance is less than a hundred miles.

If you're taking a train, you'll have to wait for the train to depart according to the timetable.

And driving a car on the road, the road is almost three hours.

"Yes!"

Accepting Rutherford's command, Chadwick immediately ran out.

Rutherford called home and asked his daughter, Mary, to help him pack his belongings for a week to half a month, and asked her to send them to the Cavendish laboratory as soon as she was done.

Putting down the phone, Rutherford walked out of his office and went to the office next door, where the owner had never been in the Cavendish laboratory, but the room was always lively.

He pushed open the door and called out to Blackett, who was hunching on his desk writing something, "Patrick, come out with me." ”

"Sir Sir what are you looking for me?"

Blackett was puzzled, he had never seen such a look on Rutherford's face, which had always been calm and relaxed.

"James and I have an urgent trip tonight, maybe in a week, maybe in half a month. During the time the two of us are away from the Cavendish lab, you and Peter will work together to be the acting director of the lab for the time being. ”

"Rest assured, Sir, we promise to complete our mission and we won't let any mess get into the lab. But what happened? ”

"Wasn't Chen Muwu's Prince Academy in Stockholm built? He invited us to cut the ribbon for him. ”

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

(End of chapter)