nuclear reaction


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nuclear reaction

n.
A reaction, as in fission, fusion, or radioactive decay, that alters the energy, composition, or structure of an atomic nucleus.

nuclear reaction

n
(General Physics) a process in which the structure and energy content of an atomic nucleus are changed by interaction with another nucleus or particle

re•ac•tion

(riˈæk ʃən)

n.
1. action in response to some influence, event, etc.: the nation's reaction to the president's speech.
2.
a. a physiological response to an action or condition.
b. a physiological change indicating sensitivity to foreign matter: an allergic reaction.
3. an action in a reverse direction or manner.
4. a movement toward extreme political conservatism; a desire to return to an earlier system or order.
5.
a. the reciprocal action of chemical agents upon each other; chemical change.
b. a process that, unlike a chemical reaction, has the power to change the nucleus of an atom, as radioactive decay, fission, or the like.
6. Mech. the instantaneous response of a system to an applied force, manifested as the exertion of a force equal in magnitude, but opposite in direction, to the applied force.
[1635–45; on the model of react]
re•ac′tion•al, adj.

nuclear reaction

A reaction, as in fission, fusion, or radioactive decay, that changes the energy or structure of an atomic nucleus. See more at fission, fusion.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nuclear reaction - (physics) a process that alters the energy or structure or composition of atomic nuclei
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
chain reaction - a self-sustaining nuclear reaction; a series of nuclear fissions in which neutrons released by splitting one atom leads to the splitting of others
radioactive decay, disintegration, decay - the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
endoergic reaction - a nuclear reaction occurring with absorption of energy
exoergic reaction - a nuclear reaction accompanied by the evolution of energy
nuclear fission, fission - a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
nuclear fusion, nuclear fusion reaction, fusion - a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
spallation - (physics) a nuclear reaction in which a bombarded nucleus breaks up into many particles; "some astronomers believe that the solar system was formed by spallation when the sun was a very young star"
References in periodicals archive ?
Among full papers are actinide targets for the synthesis of superheavy nuclei: current priorities and future opportunities, the spontaneous fission of superheavy nuclei, odd features of some odd-odd prolate spheroidal nuclei, a microscopic theory of fission, and a free-neutron target for nuclear reaction studies.
com/articles/nature24630) study , Wednesday, in the journal Nature, that has observations from the first nuclear reaction observed in the atmosphere caused by lightning during a storm.
The (RIPL) contains input parameters for theoretical calculations of nuclear reaction cross sections.
SGs are integral to the conversion of nuclear fission's energy into electricity: the heat generated from the nuclear reaction turns water into steam, which is then used to spin a turbine and generate electricity.
They did take out the nuclear reaction vessel, but they left everything else in place.
The 15m-high Unit Three RV, which weighs more than 400t, will eventually contain a controlled nuclear reaction that will help produce safe, clean and reliable nuclear energy to be supplied to the national grid.
Weighing over 400 tons and measuring almost 15 meters in height, the RV will eventually contain the controlled nuclear reaction that will generate the safe, clean and reliable nuclear energy that will feed into the UAE grid.
Hamish de Bretton Gordon, former head of the UK and NATO's Chemical, Biological, Radiological and Nuclear reaction forces, said: "The only thing missing for North Korea is the technology needed for the warhead.
In physics, fusion is a nuclear reaction in which two or more atomic nuclei come very close and then collide at top speed and join to form a new nucleus.
At Washington State University, a 3MV Van de Graaff electro static particle accelerator was used to induce the nuclear reaction [sup.
After seven years of searching, the detector, known as the Borexino experiment, has caught a glimpse of the neutrinos cast out of the sun's main nuclear reaction, scientists report in the Aug.
Criticality refers to the point at which a nuclear reaction is self-sustaining.

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