Nuclear fission - Wikipedia, the free encyclopedia
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In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction in which the nucleus of an atom splits into smaller parts, often producing free neutrons and lighter nuclei, which may...
en.wikipedia.org/wiki/Nuclear_fission
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At the point where the chain reaction can become self-sustaining, this is referred to as critical mass. ... Lawrence Berkeley National Laboratory: The ABC's of Nuclear Science...
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www.atomicarchive.com/Fission/Fission3.shtml
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This delay slows the process of exponential growth and permits the control of nuclear chain reactions. If there are enough neutrons captured so that the ones causing immediate fission are sufficient to lead to exponential growth, then the mass is called prompt critical and it becomes very difficult to control.
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www.spiritus-temporis.com/nuclear-fission/critical-mass...
www.spiritus-temporis.com/nuclear-fission/critical-mass.html
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Critical Mass: How much U235 do we need to make a bomb? The amount of uranium need to create a working bomb is directly related to critical mass. Let’s talk about critical mass. If you had a small sphere of pure ... Nuclear Fission; * Introduction; * Uranium235 and; Uranium238; * Chain Reaction; * Critical Mass...
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library.thinkquest.org/26285/english/nuclearfission.htm...
library.thinkquest.org/26285/english/nuclearfission.html
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Thermonuclear Fusion Reactions; ... Attainment of Critical Mass in a Nuclear Explosion; In order to produce an explosion, the material must then be made “supercritical,” i.e., larger than the critical mass, in a time so short as to preclude a sub-explosive change in the configuration, such as by melting.
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www.undergroundbombshelter.com/bombshelter/understandin...
www.undergroundbombshelter.com/bombshelter/understanding-radiation-scientific-basis-nuclear-explosion-attainment-critical-mass-nuclear-weapons.htm
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Actually, the critical mass depends, among other things, on the shape of the material, its composition and density (or compression), and the presence of impurities which can remove neutrons in nonfission reactions. ... Attainment of Critical Mass in a Nuclear Explosion; In order to produce an explosion, the material must...
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www.undergroundbombshelter.com/bombshelter/understandin...
www.undergroundbombshelter.com/bombshelter/understanding-radiation-scientific-basis-nuclear-explosion-critical-mass-fission-chain.htm
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Hutchinson encyclopedia article about Critical mass (nuclear). Critical mass (nuclear). Information about Critical mass (nuclear) in the Hutchinson encyclopedia. ... Critical mass (nuclear); Critical Mass (pressure group); Critical Mass (rock band); Critical Mass (short story); Critical Mass (ska band);
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encyclopedia.farlex.com/Critical+mass+(nuclear)
encyclopedia.farlex.com/Critical+mass+(nuclear)
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Encyclopedia article about Critical mass (nuclear). Information about Critical mass (nuclear) in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary. ... Critical mass (nuclear); critical micelle concentration; critical moisture content; critical opalescence; critical path method;
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encyclopedia2.thefreedictionary.com/Critical+mass+(nucl...
encyclopedia2.thefreedictionary.com/Critical+mass+(nuclear)
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All licensees authorized to possess a critical mass of special nuclear material. PURPOSE; The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice (IN) to alert addressees to a safety concern arising from inadequate criticality safety analysis of ventilation systems at fuel cycle facilities.
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www.nrc.gov/reading-rm/doc-collections/gen-comm/info-no...
www.nrc.gov/reading-rm/doc-collections/gen-comm/info-notices/2005/in200522.pdf
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