pair formation


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


In literature:

Changes and exchanges took place, and then a pair-formation began to take place.
"The Fourth R" by George Oliver Smith
They are monogamous, the pair dwelling together in burrows of their own formation.
"Natural History of the Mammalia of India and Ceylon" by Robert A. Sterndale
The Terran stared down upon a segmented under belly where legs were paired in riblike formation.
"Storm Over Warlock" by Andre Norton
Players paired in circular formation, inside arms hooked at elbows, outside hands on hips.
"Games and Play for School Morale" by Various
The precise mechanism of pair-formation in the Bell Vireo is not known.
"Natural History of the Bell Vireo, Vireo bellii Audubon" by Jon C. Barlow

In news:

When The Paris Review appeared in 1953, its format was familiar to aficionados of literary periodicals: the first issue featured poems, short fiction and a pair of essays on trends in French and Italian literature.
This year's format will pair one of 40 "young gun pro" golfers with an amateur player on a blind draw.
Skyview had a pair of champions at the event, which uses a round-robin format to determine the best wrestler.
The Panthers scored 79 points to win, while Homer was second at 60 and Nikiski was third at 59.Skyview had a pair of champions at the event, which uses a round-robin format to determine the best wrestler.
The match-play format, already unorthodox in professional golf, was even more so in determining the pairings.
Orchard Supply Hardware Stores Corp. Said Friday it will add two California stores to its rollout of a new neighborhood format, with the grand re-openings of a pair of stores in the company's hometown of San Jose on Oct 6.
Pair Bonding is the formation of a bond between two parrots for the purpose of procreation.
Scripted series, formats fly at MipTV: Universal Channel buys pair of 'Kings,' BBC finds love in Germany.

In science:

Consequently, we find that stripe formation is universal in a low hole doping range and the stripe sensitively changes its structure with variations of U/t and the doping rate. A remarkable change is that a stripe formed by a hole pair turns to one by a bi-hole pair when entering a limited strong U/t range.
Stripe Formation in Fermionic Atoms on 2-D Optical Lattice inside a Box Trap: DMRG Studies for Repulsive Hubbard Model with Open Boundary Condition
Interestingly, this difference disappears if we enrich LCG’s type with product ‘⊗’, with pair formation ‘h·, ·i’ as the corresponding semantic operation.
Proof Nets and the Complexity of Processing Center-Embedded Constructions
But it turned out that an essential process had been completely forgotten in all cooling calculations: neutrino emission due to the formation of Cooper pairs when the neutron (or proton) liquid becomes superfluid (resp. superconducting).
Thermal Evolution of Isolated Neutron Stars. II
It was shown that as the true vacuum bubbles grow and collide, the kinetic energy released may flip the phase of the order-parameter field, resulting in the formation of a vortex-antivortex pair.
Summary of GR15 session B.3 -- Physics of the Early Universe
In the case of QGP formation, s¯s pairs can either be produced via the interactions of two gluons or of q ¯q pairs.
Signatures of Quark-Gluon-Plasma formation in high energy heavy-ion collisions: A critical review