The neutron flux is a scalar quantity used in nuclear physics and nuclear reactor physics. It is the total distance travelled by all free neutrons per...
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Neutron radiation is a form of ionizing radiation that presents as free neutrons. Typical phenomena are nuclear fission or nuclear fusion causing the release...
21 KB (2,657 words) - 09:53, 16 July 2024
A neutron source is any device that emits neutrons, irrespective of the mechanism used to produce the neutrons. Neutron sources are used in physics, engineering...
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by neutron capture. Neutron capture on protons yields a line at 2.223 MeV predicted and commonly observed in solar flares. At small neutron flux, as...
8 KB (927 words) - 01:52, 13 July 2024
reactors, that high neutron fluxes became possible, leading to the possibility of in-depth structure investigations. The first neutron-scattering instruments...
11 KB (1,353 words) - 08:35, 7 October 2022
sensitivities for most elements. The neutron flux from such a reactor is in the order of 1012 neutrons cm−2 s−1. The type of neutrons generated are of relatively...
18 KB (2,306 words) - 23:48, 19 May 2024
flux reactor-based sources of neutrons for condensed matter physics research in the United States, and it has one of the highest steady-state neutron...
38 KB (5,588 words) - 03:38, 18 May 2024
Iodine pit (category Neutron poisons)
depends on the neutron flux before the shutdown. Iodine pit behavior is not observed in reactors with neutron flux density below 5×1016 neutrons m−2s−1, as...
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as designed ... [O]ur first "neutron bombs" were the GAR-11 and MB-1 Genie. It has also been suggested that neutron flux's effects on the warhead electronics...
63 KB (6,667 words) - 05:44, 14 August 2024
reactors, the neutron reflector is installed for following purposes: The neutron flux distribution is “flattened“, i.e., the ratio of the average flux to the...
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and the number of target nuclei.[page needed] In conjunction with the neutron flux, it enables the calculation of the reaction rate, for example to derive...
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fission) are proportional to the neutron flux, contrasting with fixed-source problems where the source is independent of the flux. In these calculations, the...
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Xenon-135 (category Neutron poisons)
absorbed neutrons and disrupted the B Reactor that was being used in their project. During periods of steady state operation at a constant neutron flux level...
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nuclear fuel, whose neutron flux from spontaneous fission is insufficient for a reliable startup, or after prolonged shutdown periods. Neutron sources ensure...
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Chromium-51 will form by neutron activation in chrome steel (which contains Cr-50) that is exposed to a typical reactor neutron flux. Carbon-14, most frequently...
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resulting in a thermal neutron flux that is about 40 × 106 higher than the normal environmental neutron flux. This high thermal neutron flux will generally result...
33 KB (4,531 words) - 15:20, 6 June 2024
Luminous flux Magnetic flux Magnetic flux quantum Neutron flux Poynting flux Poynting theorem Radiant flux Rapid single flux quantum Sound energy flux Volumetric...
28 KB (3,845 words) - 15:56, 27 April 2024
of "flux freezing", or conservation of the original magnetic flux during the formation of the neutron star. If an object has a certain magnetic flux over...
114 KB (13,800 words) - 23:56, 24 August 2024
as nuclear reactors, a neutron poison (also called a neutron absorber or a nuclear poison) is a substance with a large neutron absorption cross-section...
18 KB (2,277 words) - 12:36, 16 July 2024
parts: two plutonium-gallium hemispheres and a ring, designed to keep neutron flux from "jetting" out of the joined surface between the hemispheres during...
28 KB (2,562 words) - 00:49, 16 August 2024
so-called neutron bombs) end with the fissioning of the final natural uranium tamper, something that could not normally be achieved without the neutron flux provided...
99 KB (11,611 words) - 21:19, 14 August 2024
short gamma-ray bursts. The merger of neutron stars momentarily creates an environment of such extreme neutron flux that the r-process can occur. This reaction...
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R-process (redirect from Rapid neutron capture process)
within ordinary stars, particularly AGB stars, where the neutron flux is sufficient to cause neutron captures to recur every 10–100 years, much too slow for...
31 KB (3,894 words) - 12:57, 23 August 2024
graphite neutron reflector surrounding the core. Like DIDO, its original purpose was nuclear materials testing, using its high neutron flux to give materials...
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neutrons (VCN) should be used. However, because of the weak neutron flux and lack of optical components in this range, most scientists use neutrons of...
9 KB (1,102 words) - 14:14, 16 November 2023
Nuclear reactor physics (section Neutron moderators)
source may be removed from the core to prevent damage from the high neutron flux in the operating reactor core; the secondary sources usually remains...
28 KB (4,298 words) - 15:54, 13 May 2024
biological hazard, depending on dose. A small natural "neutron background" flux of free neutrons exists on Earth, caused by cosmic ray showers, and by...
115 KB (12,957 words) - 14:11, 26 August 2024
S-process (category Neutron)
elements and isotopes produced depends on the source of the neutrons and how their flux changes over time. Each branch of the s-process reaction chain...
21 KB (2,215 words) - 04:28, 22 July 2024
Fusor (category Neutron sources)
method which produces a neutron flux that is captured to heat a working fluid will also bombard its electrodes with that flux, heating them as well. Attempts...
42 KB (5,398 words) - 02:19, 11 August 2024
of neutron flux, helping the reactor-operators in maintaining the neutron economy. It gives a direct current signal proportional to the incident flux of...
2 KB (164 words) - 06:14, 16 November 2023