annihilation


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annihilation

A reaction between an elementary particle and its antiparticle in which the two particles disappear and photons or other particles and antiparticles are created; energy and momentum are conserved. An electron and a positron, for example, interact and produce two gamma-ray photons. Hadrons, such as the proton and the antiproton, also undergo annihilation, as do quarks and antiquarks.

annihilation

[ə‚nī·ə′lā·shən]
(particle physics)
A process in which an antiparticle and a particle combine and release their rest energies in other particles.
References in periodicals archive ?
In 1990 Levin [8] suggested, as a result of a relationship between orthopositronium and collective nuclear excitation, that a 1-photon mode of its annihilation should be observed.
As the lone superpower in the world, we can provide the leadership to free the world from the threat of nuclear annihilation.
In case of a military attack by the Zionists, our dreams about annihilation of Israel will come true and the trend of the annihilation of the regime will be speeded up.
annihilation, CP-invariance) make it an intriguing probe to double the space-time (see [5]).
The two center panels of Untitled (Land w/o Bread) depict a cartoon donkey and goat, hijacked from Luis Bunuel's 1932 documentary and smiling at the brink of their possible annihilation.
A year-long study with a GRO detector has for the first time mapped in detail the distribution of this emission along the plane of the galaxy To the astonishment of astronomers, it also recorded a broad distribution of the same annihilation radiation in a region some 3,000 light-years out from the disk of the Milky Way.
We need to work with international organizations and governments to stop nuclear, biological, and chemical proliferation of weapons of mass annihilation," said Yu.
Summary: TEHRAN (FNA)- The Zionist regime is heading nowhere but towards annihilation, given its crimes and conspiracies against the oppressed Palestinian people, the Islamic Revolution Guards Corps (IRGC) announced in a statement on Tuesday.
Doppler broadening positron annihilation (DBPAT) provides direct information about core and valance electrons in (CR-39) due to radiation effects.
It's hard to easily categorize The Annihilation Score, a 'Laundry Files' novel that skirts the line between thriller, mystery, and fantasy--but for the sake of proper placement, it's reviewed here for its fantasy elements; but not to be limited to the fantasy reader, by any means.