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...
9 KB (916 words) - 17:47, 28 October 2024
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 (2,672 words) - 17:06, 19 September 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...
9 KB (1,134 words) - 14:19, 12 October 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
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
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
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...
22 KB (2,865 words) - 21:03, 11 August 2024
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
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...
4 KB (498 words) - 16:08, 18 February 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...
16 KB (1,993 words) - 02:49, 12 April 2024
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) - 01:03, 3 November 2024
Neutron transport (also known as neutronics) is the study of the motions and interactions of neutrons with materials. Nuclear scientists and engineers...
21 KB (2,123 words) - 09:55, 24 September 2024
Xenon-135 (category Neutron poisons)
very large neutron absorption cross-section, so in the high-neutron-flux environment of a nuclear reactor core, the 135Xe soon absorbs a neutron and becomes...
16 KB (1,949 words) - 03:21, 22 October 2024
nuclear fuel, whose neutron flux from spontaneous fission is insufficient for a reliable startup, or after prolonged shutdown periods. Neutron sources ensure...
6 KB (741 words) - 03:19, 25 May 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...
22 KB (2,353 words) - 14:30, 16 October 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 (12,955 words) - 07:39, 2 November 2024
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...
18 KB (2,045 words) - 14:21, 11 September 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 (13,820 words) - 00:05, 3 November 2024
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
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
graphite neutron reflector surrounding the core. Like DIDO, its original purpose was nuclear materials testing, using its high neutron flux to give materials...
7 KB (547 words) - 06:33, 18 September 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 (11,605 words) - 11:39, 7 November 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) - 14:42, 30 October 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
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 (4,252 words) - 21:12, 1 November 2024
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) - 15:56, 13 September 2024
A californium neutron flux multiplier (CFX) is a source of neutrons for research purposes. It contains a small amount of californium-252 and several plates...
3 KB (259 words) - 09:10, 19 October 2023
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
produces twenty to thirty neutrons per event. It might be possible to increase the neutron flux through the use of a neutron amplifier, a thin film of...
12 KB (1,507 words) - 12:18, 28 July 2024
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) - 06:13, 4 November 2024