until there is thermonuclear fusion to produce helium and free neutrons. These fast neutrons then cause further fission, creating "boosting". In 1951, in...
236 KB (30,181 words) - 14:35, 26 September 2024
Boron (category Neutron poisons)
spallation neutrons. Such neutrons can be moderated by materials high in light elements, such as polyethylene, but the moderated neutrons continue to...
127 KB (13,548 words) - 16:02, 23 September 2024
Nuclear weapon design (section Neutron bombs)
can be self-sustaining because it produces enough surplus neutrons to offset losses of neutrons escaping the supercritical assembly. Most of these have...
124 KB (16,268 words) - 01:08, 17 October 2024
Thorium (category CS1 German-language sources (de))
heavy seed nuclei such as 56Fe rapidly capture neutrons, running up against the neutron drip line, as neutrons are captured much faster than the resulting...
136 KB (15,997 words) - 05:51, 18 August 2024
make the neutron-poor isotope nitrogen-13; this isotope emitted positrons. In addition, they bombarded aluminium and magnesium with neutrons to make new...
39 KB (5,185 words) - 15:51, 5 September 2024
Gold (category CS1 German-language sources (de))
Bainbridge, K. T. & Anderson, H. H. (1941). "Transmutation of Mercury by Fast Neutrons". Physical Review. 60 (7): 473–479. Bibcode:1941PhRv...60..473S. doi:10...
142 KB (16,013 words) - 10:04, 28 September 2024
through the stationary aether drags light propagating through it with only a fraction of the medium's speed, with a dragging coefficient f given by f = 1 − 1...
35 KB (4,405 words) - 16:04, 22 May 2024
suction caused by evaporation from plant leaves (transpiration) and a lower fraction is supplied by suction created by osmotic pressure differences between...
45 KB (5,061 words) - 12:49, 9 October 2024
preferentially. Isotopes are the same element that differ in the number of neutrons, thereby making one isotope heavier than the other. The two stable carbon...
41 KB (5,597 words) - 12:33, 24 April 2024
Central nervous system effects from radiation exposure during spaceflight (section Radiobiology studies of central nervous system risks for protons, neutrons, and high-Z high-energy nuclei)
CNS to the low dose-rate (< 50 mGy h–1) of proton, HZE particles, and neutrons of the relevant energies for doses up to 2 Gy is of concern. PELs for short-term...
78 KB (9,537 words) - 06:32, 12 June 2024