fuel element irradiation
31Taux de combustion — Dans les technologies de l énergie nucléaire, le burnup ou taux de combustion mesure la fraction de combustible nucléaire qui a été consommée dans un réacteur nucléaire pour produire de l énergie. Il peut s exprimer conformément à sa définition… …
32POLLUTION — Bien que d’usage banal à l’heure actuelle, le terme de pollution recouvre des acceptions fort diverses et qualifie une multitude d’actions qui dégradent d’une façon ou d’une autre le milieu naturel. Certes, le vocable désigne sans ambiguïté les… …
33Nuclear fission — For the generation of electrical power by fission, see Nuclear power. Splitting the atom redirects here. For the EP, see Splitting the Atom. Nuclear physics Radioactive decay Nuclear fission Nuclear fusio …
34Fusion power — The Sun is a natural fusion reactor. Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power). In doing so they release a …
35Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …
36technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
37Tritium — Infobox isotope background = #ffcccc text color = isotope name = Hydrogen 3 alternate names = tritium, triton mass number = 3 symbol = H num neutrons = 2 num protons = 1 abundance = trace halflife = 4500±8 days decay mode1 = Beta emission decay… …
38Plutonium — (pronEng|pluːˈtoʊniəm, symbol Pu, atomic number 94) is a rare radioactive, metallic chemical element. The most significant isotope of plutonium is 239Pu, with a half life of 24,100 years; this isotope is fissile and is used in most modern nuclear …
39plutonium — /plooh toh nee euhm/, n. Chem., Physics. a transuranic element with a fissile isotope of mass number 239 (plutonium 239) that can be produced from non fissile uranium 238, as in a breeder reactor. Symbol: Pu; at. no.: 94. [1940 45; < Gk Ploúton… …
40Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …
