![]() |
|
|
| |
|
||||
Fast neutron (702 bytes)
1: ... energy neutrons produced in cosmic showers. Fast neutrons are produced by nuclear processes such as [[nucle... 3: ...ght water]], or [[graphite]] are used to moderate neutrons. Neutron source (750 bytes) 1: ...n as bright sparks, but the sparks each have many neutrons in them. 3: ...ryllium is hit by [[alpha particle]]s at about 30 neutrons/million alpha particles. Pulse neutron generator (501 bytes) 1: ...ve decades. Neutrons are 'fired' as [[plasma]]. [[Neutrons]] are usually [[bonded]] to [[protons]]. Neutron flux (151 bytes) 3: n : the rate of flow of neutrons; the number of neutrons passing through a unit area in unit time Thermal reactor (481 bytes) 3: ...rmal neutron]]s, so preventing the capture of the neutrons by [[Uranium 238]]. Hydrogen-5 (960 bytes) 1: ...ther, becoming a nucleus with one proton and four neutrons. The remaining proton may be detected, and the ex... Neutron diffraction (1447 bytes) 2: ...r nuclei can serve as diffraction obstacles. When neutrons from a reactor are slowed down and selected prope... 6: ...between neutron and [[X-ray diffraction]] is that neutrons are sensitive to magnetic forces in the material. Neutron emission (431 bytes) 3: ...he nucleus. Some examples of isotopes which emit neutrons are [[Beryllium]]-13 and [[Carbon]]-14. 10: [[ca:Emissió de neutrons]] Thermal neutron (1242 bytes) 1: ...cules). After a number of collisions with nuclei, neutrons arrive at this energy level, provided that they a... 3: Thermal neutrons have a much larger effective cross-section than [... 5: ...thers, called [[fast breeder]] reactors, use fast neutrons directly. Neutron moderator (1907 bytes) 4: ...t nuclei which do not easily absorb neutrons. The neutrons strike the nuclei and bounce off. In this process... 6: ...mendous amount of energy. The newly released fast neutrons must be slowed down (moderated) before they can b... 8: ...ut relies on fission produced by unmoderated fast neutrons to sustain the chain reaction. Isotone (568 bytes) 4: ...ng the same mass number, i.e. sum of protons plus neutrons. Hydrogen-7 (882 bytes) 1: ... atoms. In the resulting reaction, the helium-8's neutrons were donated to the hydrogen. The two remaining p... Neutron radiation (3310 bytes) 1: ...utron radiation''' consists of free [[neutron]]s. Neutrons may be emitted during [[nuclear fission]] (either... 3: ...s themselves. This occurs through the capture of neutrons by atomic nuclei, which are transformed to anothe... 5: ... elements undergo atomic [[transmutation]]. Fast neutrons are produced by fission and fusion reactions and ... 7: ... reactor]]s) and all nuclear weapons rely on fast neutrons. This requires certain changes in the design and... 9: Cosmogenic neutrons, neutrons produced from [[cosmic radiation]] in the earth's... Dineutron (544 bytes) 3: A system made up of only two neutrons is not bound, though the attraction between them ... Gold synthesis (2130 bytes) 10: ...isotopes in order to get the mercury 197. However neutrons of so high-energy can be produced only by particl... Hydrogen-4 (926 bytes) 1: .... In this experiment, the tritium nuclei captured neutrons from the fast-moving deuterium nucleus. The prese... Administratium (2333 bytes) 6: ...eutrons, 75 vice-neutrons, and 111 assistant vice-neutrons. This gives it a [[mass number]] of 312. These 31... 10: ...stant neutrons, vice-neutrons, and assistant vice-neutrons exchange places. Studies have shown that the atom... Subcritical reactor (1417 bytes) 3: ...neutrons. Particle accelerators cannot accelerate neutrons, but produce them by [[spallation]]. Interacting boson model (474 bytes) Neutron transport (1927 bytes) 1: ...s of free [[neutron]]s are obtained by extracting neutrons from [[neutron source]]s. 3: ...lecting properties of the inner wall of the tube. Neutrons are indeed reflected at a wall, but usually at an...
|
|||||
|
|
|
|
|
|
Copyright 2008 WordIQ.com - Privacy Policy
::
Terms of Use
:: Contact Us
:: About Us This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "neutrons". |