Chapter 429 Quantum Tunneling
"alright!"
"Now that everyone has learned to be reasonable."
"Let's start this meeting." Li Mo opened his suitcase, took out a large pile of manuscripts, and then pulled a blackboard from the side.
He turned around and drew a circle on the blackboard, pointed at the circle and said: "The sun!"
"Everyone knows that the biggest difficulty in controllable nuclear fusion is that nuclear fusion requires extremely high temperatures. It is generally believed that only by heating deuterium and tritium plasma to 100 million degrees Celsius can sustainable nuclear fusion be maintained."
"But all the materials on our planet cannot accommodate ions with temperatures as high as 100 million degrees Celsius. So in order to solve this problem, two solutions have emerged. One is inertial confinement, which uses inertia to constrain extremely high-temperature plasma, such as my country’s Divine Light and Country M’s National Ignition Plan; the other is magnetic confinement, which uses magnetic force to confine high-temperature plasma, such as tokamak, stellarator, etc.”
"But have you ever thought about a question: Why can the sun produce sustained nuclear fusion even though its internal temperature is only 16 million degrees, which does not meet the fusion conditions of 100 million degrees Celsius?"
"Quantum tunneling!" Professor Sun from the High Energy Physics Theory Research School was the first to raise his hand: "There is a quantum tunneling effect between deuterium particles and tritium particles inside the sun, so it can occur at a temperature of 16 million degrees.
Sustainable nuclear fusion.”
The quantum tunneling effect is a "counter-intuitive" effect in quantum mechanics and is also a key mechanism for nuclear fusion in stars in the universe. It represents the quantum behavior of microscopic particles that can penetrate or cross a potential barrier, despite the height of the potential barrier.
is greater than the total energy of the particle.
In layman's terms, deuterium particles and tritium particles need to be heated to 100 million degrees Celsius before their nuclei have enough energy to overcome the Coulomb potential barrier, so that the distance between the nuclei is less than 10nm, so that nuclear fusion occurs.
When the temperature on the sun is only 16 million degrees Celsius, some atomic nuclei will cross the Coulomb potential barrier under the quantum tunneling effect, thus promoting nuclear fusion.
It’s just that the probability of the quantum tunneling effect occurring is extremely low, so low that humans cannot imagine it. Logically speaking, because the probability is too low, it is difficult for it to occur spontaneously on the sun. However, the sun has a characteristic, that is, it is large enough. Therefore,
The number of particles that make up the sun is enough. Even if the probability is small, it can happen based on the basis of the sun.
Just like in human cognition, it is an impossible event for a person to pass through a wall!
Everything in this universe is composed of particles, and people and walls are no exception. So according to the quantum tunneling effect, it is possible for the human body to pass through the wall!
It's just that this probability is too small. If the probability of an atom passing through a wall is one in a million, then a person has about 10^27 atoms. In other words, every atom in the human body happens to be
The probability of passing through the wall is: 0.00000...01 (there are about 160 zeros after the decimal point), and the thicker the wall, the number of zeros will increase exponentially!
This probability is roughly equivalent to the probability that a person will win five million once a day from the formation of the universe until now! But as long as the probability is not zero, it must happen once...
"Hahaha!" Academician Zhou suddenly stood up and looked up to the sky laughing: "I thought it was some new thing?"
"It turns out to be the quantum tunneling effect."
"It is undeniable that due to the existence of quantum tunneling effect, the conditions required for sustainable nuclear fusion will be greatly reduced."
"But, Scientist Li, have you ignored one fact, that is probability!"
"The probability of the quantum tunneling effect happening is really too low... so low that it's unimaginable... so low that it can only happen if it's as big as the sun."
“Can you build a fusion generator the size of the sun?”
"No way!"
"So, the quantum tunneling effect is meaningless to our human controlled nuclear fusion project!"
The nine professors present also nodded in agreement. The probability of the quantum tunneling effect occurring is too low. It is so low that it is a dead end.
Li Mo smiled slightly: "I can't create the sun!"
"But I can increase the probability of quantum tunneling happening!"
There are two ways to increase the number of times a low-probability event occurs in reality. One is to increase the number of samples. When the number of samples is large enough, extremely low-probability events will inevitably occur. The other is to increase the number of events that occur.
Probability, turning small probability into high probability, so that even if the number of samples remains unchanged, the event will inevitably happen.
As soon as these words came out, Academician Zhou, who still had a smile on his face, stood stunned in place like a piece of wood.
for a long time.
"Hahahaha!" After coming back to his senses, he laughed again, pointed at Li Mo and said: "You...are you here to make a joke?"
"Hahaha...increase the probability...start joking?"
"This is absolutely impossible!"
As he spoke, Academician Zhou looked around with his eyes, and saw that the professors were all frowning, with thoughtful expressions on their faces, as if they were considering this possibility.
What's going on?
Do you still need to consider such an anti-common sense idea?
The smile disappeared from his face again, and he asked timidly: "...You are actually considering this possibility?"
....
"Lao Zhou, sit down!"
"Listen to Professor Li!" Academician Wang from the Chinese Academy of Sciences scolded with a frown. It seemed that Academician Zhou still had not given up his past grudges, but he did not think carefully about who proposed this seemingly absurd idea.
Is the Moxing battery ridiculous? Is the Moxing ridiculous? Is the quantum chip ridiculous?
Didn’t everything become a reality in this person’s hands?
Hearing the rebuke from his colleagues, Academician Zhou realized his gaffe and sat down with an embarrassed expression.
"Professor Li, Academician Zhou is so excited these days."
"Please continue to talk about how to improve the probability of quantum tunneling effect." Academician Wang explained to his colleagues with a smile.
Li Mo nodded lightly, turned around, and wrote three big words on the blackboard - pure mathematics!
"I used pure mathematics to build a complete mathematical model. By analyzing the interaction between quantum state particles, I discovered a method that can increase the probability of the quantum tunneling effect."
Pure mathematics? The scientists who were working on it couldn't help but frowned. They had also heard about this new branch of mathematics that has been very popular in the academic world recently.
It is said that this mathematical theory abandons the traditional method of describing the world using physical or chemical methods, and attempts to use pure mathematical equations and numerical matrices to describe the essence of things.
For example, to describe an apple, physical methods can measure its size, weight, and volume. Chemical methods can describe its color, taste, ingredients, etc.
But in pure mathematics, an apple is a complex three-dimensional matrix group, and this matrix group completely represents the apple. The essence of the entire apple is a string of numbers.
In the same way, everything in the world is just a long series of numbers!
This "novel" world description method has become popular in the entire mathematical world since it was proposed by the person in front of me.
It's just that in the eyes of high-energy physicists like them, mathematics only serves physics. Therefore, they only have a rough understanding of "pure mathematics" and do not conduct in-depth research.
Chapter completed!