The process by which the fission of a nucleus releases neutrons, causing other nuclei to undergo fission in turn Both the atomic bomb and the nuclear reactor use a chain reaction to generate energy
From a 1/4 Tag formation only (at A1) Very Centers and the directly-facing Outside dancers Pass Thru as the End of the Center Line Counter Rotate 1/4 [walk forward in an arc, changing facing direction by 90°, 1/4 of a Circle around the outside of the set]; Centers of each side Hinge; Center 4 Star 1/4 as Outsides Trade; Those who meet Cast Off 3/4 as Others move up (Phantom Hourglass Circulate) A 1/4 Tag formation ends in Parallel Waves
A reaction that initiates its own repetition In a fission reaction, free neutrons are produced which fly off and strike other nuclei, causing them to split and send off yet more free neutrons The fission will continue as long as there are enough free neutrons carrying the right amount of energy
A reaction that stimulates its own repetition, in particular one, where the neutrons originating from nuclear fission cause series of fission reactions
A large number of nuclear fissions, taking place within a certain mass of a fissionable isotope, that release a great quantity of energy in a short time
When a fissionable nucleus is split by a neutron it releases energy and one or more neutrons These neutrons split other fissionable nuclei, releasing more energy and more neutrons, making the reaction self-sustaining
A reaction that stimulates its own repetition, in particular where the neutrons originating from nuclear fission cause an ongoing series of fission reactions
A process in which one nuclear transformation sets up conditions for similar nuclear transformation in another atom Thus, when fission occurs in uranium atoms, neutrons are released, which in turn produce fission in other uranium atoms
a series of chemical reactions in which the product of one is a reactant in the next a self-sustaining nuclear reaction; a series of nuclear fissions in which neutrons released by splitting one atom leads to the splitting of others
a reaction which, once started, continues through its own action; the splitting of uranium atoms releases neutrons that, in turn, continue the process causing other uranium atoms to split
The continuing process of nuclear fissioning in which the neutrons released from a fission trigger at least one other nuclear fission In a nuclear weapon, an extremely rapid, multiplying chain reaction causes the explosive release of energy In a reactor, the pace of the chain reaction is controlled to produce heat (in a power reactor) or large quantities of neutrons (in a research or production reactor)
A chain of events described by W Edwards Deming: improve quality, decrease costs, improve productivity, increase market with better quality and lower price, stay in business, provide jobs and provide more jobs
(also Nuclear chain reaction) 1 A reaction that stimulates its own repetition 2 For example, nuclear reaction occurs when neutrons released from a split atom such as a uranium-235 (U235) nucleus go on to fission other nuclei This reaction produces additional neutrons that cause more fissions, which release still more neutrons to cause even more fissions, which release even more neutrons, and so on See Fission
A reaction which, once started, will produce a material or substance necessary to continue the reaction An example is nuclear fission Once a fission reaction is started, neutrons are released, which cause more nuclei to undergo fission, which release more neutrons, and so on
A chain reaction is a series of events, each of which causes the next. The powder immediately ignited and set off a chain reaction of explosions. Process yielding products that initiate further processes of the same kind. Nuclear chain reactions are a series of nuclear fissions initiated by neutrons produced in a preceding fission. A critical mass, large enough to allow more than one fission-produced neutron to be captured, is necessary for the chain reaction to be self-sustaining. Uncontrolled chain reactions, as in an atomic bomb, occur when large numbers of neutrons are present and the reactions multiply very quickly. Nuclear reactors control their reactions through the careful distribution of the fissionable material and insertion of neutron-absorbing materials