diffusion of thermal neutrons

См. также в других словарях:

• diffusion — /di fyooh zheuhn/, n. 1. act of diffusing; state of being diffused. 2. prolixity of speech or writing; discursiveness. 3. Physics. a. Also called migration. an intermingling of molecules, ions, etc., resulting from random thermal agitation, as in …   Universalium

• Détection de neutrons — La détection de neutrons est la détection effective de neutrons entrant dans un détecteur. Il existe deux aspects de la détection effective de neutrons : l aspect matériel (hardware) et l aspect logiciel (software). Le matériel de détection… …   Wikipédia en Français

• Facteur de diffusion atomique — En physique, le facteur de diffusion atomique est une mesure de la puissance de diffusion d une onde par un atome. Il dépend de la nature des interactions entre l onde et l objet diffusant, donc de la radiation incidente : en général, il s… …   Wikipédia en Français

• Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …   Wikipedia

• Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …   Wikipedia

• Enriched uranium — Proportions of uranium 238 (blue) and uranium 235 (red) found naturally versus enriched grades Enriched uranium is a kind of uranium in which the percent composition of uranium 235 has been increased through the process of isotope separation.… …   Wikipedia

• dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

• Nuclear reactor — Core of CROCUS, a small nuclear reactor used for research at the EPFL in Switzerland This article is a subarticle of Nuclear power. A nuclear reactor is a device to initiate and control a sustained nuclear chain reaction. Most commonly they are… …   Wikipedia

• Nuclear reactor technology — This article is a subarticle of Nuclear power .A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate, as opposed to a nuclear bomb, in which the chain reaction occurs in a… …   Wikipedia

• Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro …   Wikipedia

• Nuclear reactor physics — See also: Critical mass Nuclear reactor physics is the branch of science that deals with the study and application of chain reaction to induce controlled rate of fission for energy in reactors. Most nuclear reactors use a chain reaction to induce …   Wikipedia