Pair Production

  

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Pair Production

Definition: Pair Production

Pair Production

Noun

1. The transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus.

Source: WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.
 



Specialty Definitions: Pair Production

DomainDefinitions

Aerospace

An absorption process for X-ray and gamma ray radiation in which the incident photon is annihilated in the vicinity of the nucleus of the absorbing atom, with subsequent production of an electron and positron pair.This reaction does not occur for incident radiation energies of less than 1.02 million electron volts. (references)

Mining

The transformation of a high-energy gamma ray into a pair of particles (anelectron and a positron) during its passage through matter. (references)

Physics

Simultaneous formation of a positive and a negative electron as a result of the interaction of a photon of sufficient energy, i. e. higher than 1. 02 MeV, with the field of an atomic nucleus or other particle. Source: European Union. (references)
 A collision process for gamma rays with energies greater than 1022-keV (two electron masses) where an electron /positron pair is produced. A heavy nucleus must be present for pair production. For high-energy gamma rays the pair production process is proportional to Z2 and ln(gamma). (references)

Source: compiled by the editor from various references; see credits.

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Specialty Definition: Pair production

(From Wikipedia, the free Encyclopedia)

Pair production is a physical process which occurs when two high-energy photons collide and produce a particle and an antiparticle. Electrons and positrons are frequently produced by this process because the light weight of the electron allows relatively low-energy gamma rays to create particle pairs.

Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Pair production."

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Synonyms: Pair Production

Synonyms: pair creation (n), pair formation (n). (additional references)

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Crosswords: Pair Production

Specialty definitions using "pair production": Big Bang NucleosynthesisPACKING-LINE WORKER. (references)

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Frequency of Internet Keywords: Pair Production

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.
 
ExpressionFrequency
per Day

pair production

4
Source: compiled by the editor from various references; see credits.

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Modern Translations: Pair Production

Language Translations for "pair production"; alternative meanings/domain in parentheses.

Danish

  

pardannelse (pair creation, pair emission, pair formation). (various references)

   

Dutch

  

paarvorming (pair creation, pair emission, pair formation, pairing, pairing of electrons). (various references)

   

Finnish

  

parinsyntyminen (pair creation, pair emission, pair formation), parinmuodostus (pair creation, pair emission, pair formation). (various references)

   

French

  

production de paires (pair creation, pair emission, pair formation), création de paires (pair creation, pair emission, pair formation). (various references)

   

German

  

Paarerzeugung (pair creation, pair emission, pair formation), Paarbildung (pair creation, pair emission, pair formation, pairing, pairing of electrons). (various references)

   

Italian

  

produzione di coppie (pair creation, pair emission, pair formation). (various references)

   

Pig Latin

  

airpay oductionpray.(various references)

   

Portuguese

  

produção de pares (pair creation, pair emission, pair formation). (various references)

   

Spanish

  

producción de pares (pair creation, pair emission, pair formation). (various references)

   

Swedish

  

parproduktion (pair creation, pair emission, pair formation), elektronparproduktion (pair creation, pair emission, pair formation). (various references)

Source: compiled by the editor from various translation references.

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Anagrams: Pair Production

Scrabble® Enable2K-Verified Anagrams

Words within the letters "a-c-d-i-i-n-o-o-p-p-r-r-t-u"

-3 letters: procuration.

-4 letters: carotinoid, corruption, production.

-5 letters: apportion, incorrupt, indicator, inotropic, irruption, pantropic, podiatric, potpourri, pourpoint, proration.

Source: compiled by the editor from various references; see credits.

SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.

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Alternative Orthography: Pair Production


Hexadecimal (or equivalents, 770AD-1900s) (references)

50 61 69 72      50 72 6F 64 75 63 74 69 6F 6E

Leonardo da Vinci (1452-1519; backwards) (references)

    

Binary Code (1918-1938, probably earlier) (references)

01010000 01100001 01101001 01110010 00100000 01010000 01110010 01101111 01100100 01110101 01100011 01110100 01101001 01101111 01101110

HTML Code (1990) (references)

&#80 &#97 &#105 &#114 &#32 &#80 &#114 &#111 &#100 &#117 &#99 &#116 &#105 &#111 &#110

ISO 10646 (1991-1993) (references)

0050 0061 0069 0072      0050 0072 006F 0064 0075 0063 0074 0069 006F 006E

Encryption (beginner's substitution cypher): (references)

50677584250848170876986758180

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INDEX

1. Definition
2. Synonyms
3. Crosswords
4. Expressions: Internet
5. Translations: Modern
6. Anagrams
7. Orthography
8. Bibliography


  

Copyright © Philip M. Parker, INSEAD. Terms of Use.