What is the process of pair production?
pair production, in physics, formation or materialization of two electrons, one negative and the other positive (positron), from a pulse of electromagnetic energy traveling through matter, usually in the vicinity of an atomic nucleus. Pair production is a direct conversion of radiant energy to matter.
What process does this Feynman diagram represent?
A Feynman diagram represents a perturbative contribution to the amplitude of a quantum transition from some initial quantum state to some final quantum state. For example, in the process of electron-positron annihilation the initial state is one electron and one positron, the final state: two photons.
What is pair production in xray?
Pair production occurs when an electron and positron are created with the annihilation of the x-ray photon. Pair production is of particular importance when high-energy photons pass through materials of a high atomic number.
What is pair production with example?
Pair production is the creation of a subatomic particle and its antiparticle from a neutral boson. Examples include creating an electron and a positron, a muon and an antimuon, or a proton and an antiproton. Pair production often refers specifically to a photon creating an electron–positron pair near a nucleus.
What is pair production and pair annihilation?
The conversion of a photon into an electron-positron pair on its interaction with the strong electric field surrounding a nucleus is called pair production. The converse of pair production in which an electron and positron combine to produce two photons is known as annihilation of matter.
How does a Feynman diagram work?
A Feynman diagram is a two-dimensional representation in which one axis, usually the horizontal axis, is chosen to represent space, while the second (vertical) axis represents time.
What is pair production example?
What is the difference between pair production and annihilation?
Hint: Pair production is the process in which the photons fall on a nucleus and there is the formation of electron and positron pair, where positron is the charge having a mass equal to that of the electron but possess positive charge, on the other hand, annihilation is the process in which the electron and positron …
What is pair annihilation process?
Pair production and annihilation There exists an inverse process to pair production called pair annihilation, in which a particle and its antiparticle collide and annihilate each other, the total energy of the two particles appearing as electromagnetic radiation.