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What else can I help you with?
Describe what happens when a position and a electron collide?
The collision of a positron and an electron is either a scattering event or a mutual annihilation event. Remember that the positron is antimatter; it's the antiparticle of the electron. It has a positive charge and will be attracted to electrons (or anything else negative). If a positron has extremely high energy, it will have to "slow down" before it and an electron can "mutually capture" each other and annihilate each other. Let's look at a positron with high kinetic energy that is moving very quickly through some medium like air or water. In scattering, the positron whizzes by an electron of an atom and some energy is exchanged. The positron will give a bit of energy to the electron, and how much will be determined by the energies of the positron and the electron, and some "probabilities" regarding the scattering, which could be either inelastic or elastic scattering. The net result is that the positron will leave the area moving a bit less rapidly. It lost energy (has less kinetic energy), and it is slowing down. As it slows, it experiences an increasing probability that it will be able to combine with an electron. The more it slows down, the more likely the "combining event" will become. When the positron "bumps into" an electron after slowing down, that positron and the electron will "combine" themselves, and all of their mass will be converted into energy. This energy will be carried off by a pair of electromagnetic rays, two gamma rays. And they'll have considerable energy and be moving in opposite directions. Conservation laws will have been upheld in the reaction. The combination of matter and antimatter results in mutual annihilation, and the two particles completely disappear, having had all of their mass converted into energy.
What is anti hydrogen?
Antihydrogen is a form of antimatter consisting of an antiproton and a positron (antielectron). When antihydrogen comes into contact with ordinary matter, they annihilate each other, releasing energy in the form of gamma rays. Scientists study antihydrogen to better understand the nature of antimatter and its interactions with ordinary matter.
What is a beta partical?
A Beta Particle is a high energy electron that comes from the nucleus, not from the electron cloud. However, the nucleus contains only protons and neutrons. During this kind of transmutation, a neutron becomes unstable and splits into an electron and a proton. The electron, or beta particle, is released with a large amount of energy. The proton however, remains in the nucleus.P.S. I got this information out of my Science text book. (:
What is one property that all particles of matter have in common?
two properties that all paticles of matter have in common is that for liguid and gas move faster than solid. well, all particles have anitparticles, such as electron, its anitparticle is positron
A nuclear particle with no charge?
A neutron is a nuclear particle with no charge. Neutrons are found in the nucleus of atoms alongside protons, which have a positive charge, and electrons, which have a negative charge. Neutrons play a crucial role in maintaining the stability of the nucleus through the strong nuclear force.
What is the difference between a positron and an electron?
An electron is the carrier of the negative electrostatic force, and it has a charge of -1. Also, the electron, along with the proton and neutron, are the "basic building blocks" of atoms, and they make up the matter all around us. The positron, on the other hand, is an anti-electron - it's antimatter! And it is the antiparticle of the electron. It has a charge of +1, which is just the opposite of the electron's. The fact that the electron and positron are matter and anti-matter, and that they have a charge of -1 and +1 respectively are the major differences. A positron is an electron's anti-particle, and when the electron and positron come in contact with each other to combine, they annihilate each other in a process called electron-positron annihilation. There is a link below to that related question and to a couple of others.
Why do antimatter and matter react when they touch what's the chemistry of it?
Matter-Antimatter reactions are not chemical reactions. They are very complex sub-atomic reactions, and the nature of the annihilation depends on the matter and anti-matter in the reaction.One of the simplest matter-antimatter annihilations is between an electron and a positron (an anti-electron). The electron has a negative charge and the positron has a positivecharge. When they come in to contact (under the right conditions) they must annihilate, since one cancels out the other.However matter cannot simply dissappear, so it must be converted to energy via E = mc^2 where E is the energy released, m is the combined mass of the electron and positron, and c is the speed of light.In the case of the electron-positron annihilation this results in two gamma rays of a certain energy.As the size and complexity of the matter-antimatter reactions increases so does the complexity of the reactions.
What would happen if a positron met an electron?
When a positron meets an electron, they annihilate or destroy each other.This phenomena is known as annihilation of matter. During this process two photons of gamma rays are produced that travel in opposite directions.Actually the mass of electron and positron has been converted into energy (gamma rays).
What is an annihilation reaction?
Annihilation reaction is when you take matter and anti-matter and try to put them together and they cancel each other out. Try putting an electron and a positron together. What happens? They will cancel each other out.
Why doesn't electrons get destroyed?
They are destroyed in "K capture" decay when a proton in the nucleus captures an electron, becoming a neutron.They are destroyed in matter-antimatter annihilation when they meet a positron, a gamma ray photon is emitted.
Does an electron-positron collision violate the law of conservation of matter?
No, electron-positron collision does not violate the law of the conservation of matter. Momentum and charge are also conserved. Electrons and positrons can collide in what are called scattering events, and they can do this without necessarily undergoing mutual annihilation. Because both these little critters can exist as a wave (particle-wave duality), their behavior can be fairly easily assessed using a "basic tool kit" to analyze electromagnetic wave interaction. But electrons and positrons can annihilate each other rather than scatter. Annihilation doesn't violate the law of conservation of matter, either. And there's a reason for that. The "old" idea of the conservation of matter was that matter could neither be created nor destroyed. But we now know that matter can be converted into energy. That's what happens in annihilation. The article in Wikipedia on the annihilation event touches on electron-positron collision. And there is an article on electromagnetic scattering as well. They aren't that difficult to understand, and the curious person will find links to those posts below.
How much does one gram of antimatter?
Anti matter does NOT exist. As soon as it is in contact with matter which is anything ; solid , liquid , gas, they are both annihilated. You can think of antimatter as protons with a negative charge and electrons with as positive charge. So Proton^+ Proton^- = Annihilation (??? Energy) Electron ^- + electron^+(positron) = Annihilation (???? Energy).
What is the anti-matter equivalent of an electron?
The anti-matter equivalent of an electron is a positron. Positrons have the same mass as electrons but have a positive charge. When a positron and an electron collide, they annihilate each other, releasing energy in the form of gamma rays.
How do gamma rays relate to the PET scanner?
A PET scanner is a positron emission tomography imaging system. It takes advantage of the fact that some radioisotopes undergo radioactive decay by the emission of a positron. This form of decay, by the way, is beta decay, or beta plus decay, to be more specific. The positron is a form of anti-matter, and it is actually an anti-matter electron.When a positron is emitted from an atomic nucleus, it travels a short distance (slowing down all the while), and then "combines" with an electron in what is called mutual annihilation. When a positron and electron capture each other, their entire mass is converted into electromagnetic energy. This energy appears in the form of two high energy gamma rays, and they leave the event in opposite directions (to be picked up by a pair of detectors). That is the connection of gamma rays to the PET scanner.There is a bit more to the machine, as the pair of detectors is rotated about what is to be imaged. Further, whatever is to be imaged is moved through the "ring" about which the detectors spin. The connection between the machine and the gamma ray has, however, been established. The PET scanner detects the gamma rays emitted from the mutual annihilation of positrons and electrons.
What is the end product of matter-antimatter annihilation?
The end product of matter-antimatter annihilation is energy in the form of photons (light particles) or other subatomic particles.
What is the flaw in the definition of annihilation by Google?
The definition given by Google fallows. "The conversion of matter into energy, especially the mutual conversion of a particle and an antiparticle into electromagnetic radiation." Now to evaluate the example of electron and positron annihilation. You get two gamma rays as electron and positron annihilation occurs. (1)Gamma ray is a photon travelling at the speed of light.That is photon* C.So photon* C = Gamma ray. (2)The mass of electron = mass of positron. (3)Speed of light is ---- C = 300000000 m/s. (4)Now as per the equation of Einstein.E = m* C square.That is E =(m * C * C.)So 2 E = 2 (m*C*C).By putting the gamma rays and mass of electron or positron into the equation you get2 gamma rays = 2 ( mass of electron* C * C)..... From (1).By putting the value of gamma ray (2) into the equation you get2 (photon * C) = 2 ( mass of electron * C * C )Divide the equation by 2. You getPhoton * C = mass of electron * C * C.Divide the equation by C. You getphoton = mass of electron * C.That isphoton = mass of electron * 300,000,000.This means the photon is as massive as 300,000,000 times one electron.But this is not possible. As the mass of photon is said to be zero.That meas the definition is incorrect. Here the matter is not converted into energy. Here the mass disappears into nothing.From the electron you get gamma ray.From the positron you will logically get one anti- gamma ray.Both gamma ray and anti-gamma rays will annihilate each other into nothing.Hence proved.( So inversely you can get a pair of electron and positron from nothing. Likewise you get proton and anti-proton annihilation into nothing. Here you get equal number of electrons and positrons. Which can eventually disappear into nothing. Likewise neutron and anti-neutron disappear into nothing. So equal quantity of matter and anti-matter disappear into nothing.Vise versa, from nothing, you get equal quantity of matter and anti-matter. There is no limit to the 'time' and 'space'. So there is no limit to the amount of matter and anti-matter that is present in the space at any given time. You have the universe present of matter. That means you have a universe present of anti-matter.The equation of gravity between matter and anti-matter fallows.Force of gravity is proportional to the product of masses and inversely proportional to the square of distance between them. F is proportional to M* minus M / distance square. This equation has got minus value. So force of gravity is negative. That means mater and anti-matter will repel each other. That means the universe of matter and anti-matter will repel each other. Obviously the universe of anti-matter can not be located by today's telescopes. It is lost in the space. But the presence of universe of anti-matter is derived mathematically. There may be end number of universes of matter and anti-matter, that are present in this infinite space. But at any given time the amount of matter and anti-matter is same. Together it's zero.Hence proved.)
Why do you get photons or other particles in annihilation of subatomic particles?
In annihilation between electron and positron, you should get nothing in your hand. Instead of that you get a pair of photons. The question is that why should you get the pair of photons. So this is not complete annihilation. The answer is simple to this question. When you bring the electron and positron slowly to each other, they will annihilate to each other and will not produce the photons also. But when the particles come with high speed, they carry the energy and have momentum. This energy is converted into photons of different wave length and the electron and positron disappear or get completely annihilated. When you have heavy particles like protons and anti-protons or neutrons and anti-neutrons strike to each other, you get much larger amount of energy that is left. Because they are brought to each other at high speed, they have high momentum and so carry the large amount of energy. This energy is liberated after the annihilation. When enough quantum of energy is there, you have production of electrons, positrons and neutrinos get generated. The rest of the energy is left in the form of photons. When larger molecules of matter and antimatter will collide with each other, you may get smaller molecules of matter and antimatter in your hand.
