Introduction to antimatter atoms, antimatter is a substance made up of antiprotons, antineutrons, an

Antimatter is a substance composed of antiprotons scattering, antineutrons, and positrons in the jujube cave.

a.That's right. b.Wrong stool withered.

Correct Answer: a

Our scientists have succeeded in producing antimatter.

As early as 1928, Dirac predicted the existence of antiparticles. Every particle has an antiparticle that is strictly equal to its mass, lifetime, and spin, but has the opposite charge.

On August 2, 1932, Anderson and others at the California Institute of Technology solemnly announced to the world that they had discovered the positron. The discovery of the positron confirmed the Dirac antiparticle theory, which some theoretical physicists began to take seriously. In 1934, Pauli and Clough proved that even if a stable sea of negative particles could not be formed, there would be corresponding antiparticles.

So people started looking for antiparticles of other particles.

In 1954, at the Lawrence Radiation Laboratory at the University of California, a 6.4 billion electron volt proton synchrostable accelerator was built, which provided the conditions for the search for antiprotons. In 1955, Chamberlain and Segret used the aforementioned accelerator to confirm the existence of antiprotons observed the previous year. Since the chance of antiprotons appearing is extremely small, about every 100 billion high-energy protons collide, a very small number of antiprotons can be produced, so it is extremely difficult to prove the existence of antiprotons.

In 1955, their experimental team measured 60 antiprotons. Since the probability of accidental matches is unlikely, the counting system is not good, but it is more credible.

Soon they discovered the existence of antineutrons, and although high-energy particles can also produce antineutrons when targeted, they are more difficult to distinguish from other particles because they are not charged. They use antiprotons to collide with the nucleus, and the antiprotons give their negative charge to the protons, or get a positive charge from the protons, so that the protons become neutrons, and the antiprotons become antineutrons.

Compared with the electrons and protons of all matter in the universe that we know, antimatter has the same electricity but opposite electricity. What happens when antimatter and positive matter meet? They will destroy each other, the two particles will disappear, and their masses will be completely transformed into particles carried by some kind of high-energy force, such as photons or gluons.

We call this process "annihilation."

Antiprotons, antineutrons, and antielectrons form an antiatom if they combine like protons, neutrons, and electrons. Matter made up of antiatoms is antimatter.

It is recommended to enter the query).

Antimatter is an imaginary form of matter, in.

Particle physics.

, antimatter is.

An extension of the concept of antiparticles, antimatter is made up of antiparticles, just as ordinary matter is made of ordinary particles. The combination of matter and antimatter will be like the combination of particles and antiparticles, causing the two to annihilate and thus release high-energy photons or.

Gamma rays. It was confirmed in experiments by American physicist Carl Anderson in 1932.

The presence of positrons. Subsequently, negative protons and antineutrons with opposite spin directions were discovered.

The various macroscopic objects in nature are reduced to their microscopic origins, and they are all composed of protons, neutrons, and electrons. These particles are hence the name.

Elementary particle. This means that they are the basic bricks that make up everything in the world, but in fact the world of elementary particles is not so simple. In the early 30s, positively charged electrons were discovered, which was the first step in understanding antimatter. By the 50s, with.

With the discovery of antiprotons and antineutrons, people began to clearly realize that any elementary particle has a corresponding antiparticle in nature.

Due to the baryon. The conservation of numbers, the collision of two protons will not produce a system containing three baryons, so how should antinucleons be generated? Experiments have shown that antinucleons are always produced in pairs with nucleons in collisions. For example.

p+p→n+n+n+n'+ several.

Musons where n stands for proton or neutron, n'Stands for antiproton or antineutron. Once an antinucleon is created, it often quickly collides with a nearby nucleon and annihilates in pairs. For example.

n+n'+ several.

According to this statement, the meson must have existed somewhere in the universe.

Antimatter world.

If the antimatter world really exists, then it can only exist if it does not merge with matter. But how can matter and antimatter not merge? Where is antimatter in the universe? It's still a mystery to be solved.

Fundamentally, antimatter is an inverted manifestation of matter. Albert Einstein once predicted the existence of antimatter based on the theory of relativity: "For a matter with a mass m and an electric charge of e, there must be a substance with a mass of m and a charge of -e (i.e., antimatter)".

Antiprotons have one unit of negative charge, and antielectrons have one unit of positive charge.

Our world is made up of matter, which in turn is made up of microscopic particles such as atoms and molecules. But antimatter is the opposite, it is made up of antiparticles of atoms and molecules, that is, antiatoms and antimolecules. Therefore, the so-called antimatter here refers to having properties that are completely opposite to matter.

Antimatter, this definition has been proposed for a long time, but it starts with the prediction and discovery of the positron. As early as 1928, the British physicist Dirac discovered this phenomenon in his attempt to combine the most important principles of the 20th century, relativity and quantum mechanics, and predicted the existence of positrons. And all this is caused by the solution of the negative energy value in the relativistic wave equation established by Dirac.

In the process of solving this equation, Dirac came up with a total of 4 solutions describing the internal states of the electron, which were used to show that the electron should have 4 internal states. Two of these states can be explained by the presence of the spin of the electron and its own magnetic moment; However, the solution of the negative energy values obtained during the solution of the other two additional solutions of the equation comes to a strange conclusion.