What is the result of the annihilation of an electron and a positron?
In particle physics, annihilation is the process that occurs when a subatomic particle collides with its respective antiparticle to produce other particles, such as an electron colliding with a positron to produce two photons.
What is the approximate mass and relative charge of a positron?
The positron or antielectron is the antiparticle or the antimatter counterpart of the electron. It has an electric charge of +1 e, a spin of 1/2 (the same as the electron), and the same mass as an electron.
What happens when a positron collides with an electron?
When they meet, the positron and the electron, which are Antiparticles of each other, destroy themselves mutually, they annihilate. Two annihilation gamma with equal energy are also emitted back to back.
What happens during annihilation?
annihilation, in physics, reaction in which a particle and its antiparticle collide and disappear, releasing energy. The most common annihilation on Earth occurs between an electron and its antiparticle, a positron.
What are annihilation photons?
From Wikipedia, the free encyclopedia. Annihilation radiation is a term used in Gamma spectroscopy for the photon radiation produced when a particle and its antiparticle collide and annihilate. Most commonly, this refers to 511-keV photons produced by an electron interacting with a positron.
Is positron a proton?
Main Difference – Proton vs Positron A proton is a subatomic particle having a positive electrical charge (+1). A positron is also a positively charged subatomic particle. The main difference between proton and positron is that the mass of a proton is considerably higher than that of a positron.
How do you find the mass of a positron?
The mass of positron is equal to the mass of electron i.e., 0.000548756 amu. The exact value of the mass of the positron is about 0.511 MeV/c2 or 9.11 x 10-31 kg.
Can electron positron annihilation produce quarks?
When an electron and positron (antielectron) collide at high energy, they can annihilate to produce charm quarks which then produce D+ and D- mesons. Frame 3: The electron and positron have annihilated into a photon, or a Z particle, both of which may be virtual force carrier particles.
What type of interaction is annihilation?
Why are 2 photons produced in annihilation?
Annihilation occurs when a particle and a corresponding antiparticle meet and their mass is converted into radiation energy. Two photons are produced in the process (as a single photon only would take away momentum which isn’t allowed, as no outside forces act).