pair production

Definitions

  • WordNet 3.6
    • n pair production the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus
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Usage

In literature:

Suffice it to say, it was productive of little happiness to the new married pair.
"Withered Leaves from Memory's Garland" by Abigail Stanley Hanna
James Holden had no grasp or feeling for the great catalyst that causes this pair-production; he saw it only for its sheer mechanics.
"The Fourth R" by George Oliver Smith
The product is twenty million pairs of gloves annually.
"A Journey Through France in War Time" by Joseph G. Butler, Jr.
The slubbing is passed between the rollers in pairs, the emerging product being less in diameter than the diameter of a single slubbing.
"The Fabric of Civilization" by Anonymous
Is it production to buy fifty cents' worth of yarn and knit a pair of socks worth twenty-five cents if you enjoy doing it?
"The Principles of Economics" by Frank A. Fetter
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In news:

In Georgia Pair, A Catchy Nickname And Big Production.
In Georgia Pair, a Catchy Moniker and Big Production.
At this aerospace and medical component manufacturer, a Doosan HMC paired with a flexible pallet magazine and cell controller from Fastems has increased production and part quality while eliminating variation throughout the production chain.
Anschutz Film Group has shuffled its exec ranks, promoting a pair of development execs under its Walden Media banner as well as its head of physical production.
We arm an LS3 with a pair of killer-looking valve covers from billet custom products.
Production is paired with "Degas and Marie (His Little Dancer)," inspired by a famous sculpture.
A few weeks ago, Sling Media announced plans for a pair of new Slingbox products.
Stampede this week announced plans to expand its Unified Communications product marketing program, and has promoted a pair of executives.
Partnership is the most comprehensive pairing of additive manufacturing with full-service contract medical device product development.
Many new wines and food products have become available to professional chefs and home cooks alike, creating opportunities for new pairings .
In this month's Quick Tech section CIRCLE TRACK takes a look at a pair of budget racing pedal assemblies from Coleman Racing Products including brake and throttle pedals .
The pop star and Polaroid creative director helped unveil three new Polaroid products, including a pair of sunglasses that also functions as a camera.
Pair of local dancers play principal roles in local holiday production.
Wine has its own cellar, shoes (at least some lucky pairs) have their own closets, and now beauty products are getting a home refrigerator to call their own.
It’s an unlikely pairing: Cosmopolitan, the magazine known for its frank sex advice and sultry photo spreads, will debut a line of products for J.C.
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In science:

Abstract: We present the contributions from al l types of one-loop corrections to the scattering amplitude for the pair production of polarized charginos or neutralinos from polarized electron-positron annihilation.
Prototype Graphs for radiative Corrections to Polarized Chargino or Neutralino Production in Electron-Positron Annihilation
The results can therefore be applied to any supersymmetric extension of the Standard Model or indeed to any polarized fermion pair production process in electron-positron annihilation.
Prototype Graphs for radiative Corrections to Polarized Chargino or Neutralino Production in Electron-Positron Annihilation
The results are given in terms of general couplings and internal masses, so that they can be used in any model for the determination of the scattering amplitudes of polarized fermion pair production.
Prototype Graphs for radiative Corrections to Polarized Chargino or Neutralino Production in Electron-Positron Annihilation
The conclusions are compared with results for pair production.
Cherenkov radiation and pair production by particles traversing laser beams
The pair production threshold for optical lasers is about 430 GeV.
Cherenkov radiation and pair production by particles traversing laser beams
Let us also note that these energies are much lower than the threshold for pair production (12) equal to 220 GeV for ωL = 1.2 eV.
Cherenkov radiation and pair production by particles traversing laser beams
Spark chambers detect γ -rays via pair production.
A Search for Gamma-Ray Bursts and Pulsars, and the Application of Kalman Filters to Gamma-Ray Reconstruction
High-energy γ -ray telescopes work on the principle of pair production.
A Search for Gamma-Ray Bursts and Pulsars, and the Application of Kalman Filters to Gamma-Ray Reconstruction
Consider a pair production event after which the positron anihiliates with an outside electron.
Spinors in Quantum Geometrical Theory
First we consider pair production of photons from decay of the neutral pions.
Photon Emission in a Cascade from Relativistic Protons Initiated by Residual Thermal Photons in Gamma-Ray Bursts
The pump process of the amplifier, accounted for in the parameter ζ , must provide the energy source of the photon-pair production or the reservoir for annihilation.
Quantum Physics of Simple Optical Instruments
Therefore, it is an experimental advantage to guarantee that mostly single pairs occur, which of course limits the rate of pair production.
Quantum Physics of Simple Optical Instruments
The pair production cross section increases with energy.
Intense Source of Slow Positrons
The recombination of strings can be replaced by the other process in which a string segment is firstly splitted by the pair production of quarks, producing a baryon with five quarks or a meson with four quarks.
Pentaquark Baryons in String Theory -- Talk at Pentaquark 04
The string can break into open strings by pair production of (1, 1) monopoles.
Open Heterotic Strings
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