What does pair production mean?
Definitions for pair production
pair pro·duc·tion
This dictionary definitions page includes all the possible meanings, example usage and translations of the word pair production.
Princeton's WordNet
pair production, pair creation, pair formationnoun
the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus
GCIDE
Pair production
The simultaneous creation of a particle and its antiparticle, such as an electron and positron, from a photon; -- usually due to its interaction with the strong field near a nucleus.
Wikipedia
Pair production
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. As energy must be conserved, for pair production to occur, the incoming energy of the photon must be above a threshold of at least the total rest mass energy of the two particles created. (As the electron is the lightest, hence, lowest mass/energy, elementary particle, it requires the least energetic photons of all possible pair-production processes.) Conservation of energy and momentum are the principal constraints on the process. All other conserved quantum numbers (angular momentum, electric charge, lepton number) of the produced particles must sum to zero – thus the created particles shall have opposite values of each other. For instance, if one particle has electric charge of +1 the other must have electric charge of −1, or if one particle has strangeness of +1 then another one must have strangeness of −1. The probability of pair production in photon–matter interactions increases with photon energy and also increases approximately as the square of atomic number of (hence, number of protons in) the nearby atom.
ChatGPT
pair production
Pair production is a subatomic phenomenon that refers to the creation of an elementary particle and its corresponding antiparticle from a neutral boson. Typically observed in high-energy physics, pair production often occurs when a photon interacts with a nucleus, leading to the creation of a negatively charged electron and a positively charged positron. This process must conserve both energy and momentum, so it can only occur if the propagating photon has an energy above a certain threshold, typically equal to the combined rest mass energy of the two particles produced.
Wikidata
Pair production
Pair production refers to the creation of an elementary particle and its antiparticle, usually when a photon interacts with a nucleus. For example an electron and its antiparticle, the positron, may be created. This is allowed, provided there is enough energy available to create the pair – at least the total rest mass energy of the two particles – and that the situation allows both energy and momentum to be conserved. Other pairs produced could be a muon and anti-muon or a tau and anti-tau. However all other conserved quantum numbers of the produced particles must sum to zero – thus the created particles shall have opposite values of each other. For instance, if one particle has electric charge of +1 the other must have electric charge of −1, or if one particle has strangeness of +1 then another one must have strangeness of −1. The probability of pair production in photon-matter interactions increases with increasing photon energy and also increases with atomic number approximately as Z².
Matched Categories
Numerology
Chaldean Numerology
The numerical value of pair production in Chaldean Numerology is: 5
Pythagorean Numerology
The numerical value of pair production in Pythagorean Numerology is: 8
Translations for pair production
From our Multilingual Translation Dictionary
- Paarerzeugung, PaarbildungGerman
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"pair production." Definitions.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.definitions.net/definition/pair+production>.
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