Uranium-235constitutesabout 0.72 percent of all naturally occurring uranium. (Most naturally occurring uranium is uranium-238.) It has ahalf-lifeof 704 million years, decaying tothorium-231, with theradioactive decaychain eventually ending in the stableisotopelead-207. ...
Parker PL, Kuroda PK. The occurrence of molybdenum-99 in natural and in depleted uranium salts and the spontaneous fission half-life of uranium-238. J Inorg Nucl Chem 1958;5:153-8.P 3. Parker, P. L. , and P.K. Kuroda : J. Inorg. Nucl. Chem. 5 , 153....
将“radioactive half-life"翻译成中文 半衰期, 放射性半衰期是“radioactive half-life"到 中文 的最佳翻译。 译文示例:Delays can virtually render a radioisotope useless because of its short radioactive half-life. ↔ 拖延实际上能使放射性同位素无用,因为其放射性半衰期很短。
Unstable nuclei decay. However, some nuclides decay faster than others. For example, radium and polonium, discovered by the Curies, decay faster than uranium. This means they have shorter lifetimes, producing a greater rate of decay. In this section we explore half-life and activity, the quanti...
Google Share on Facebook radioactive half-life [¦rād·ē·ō′ak·tiv ′haf‚līf] (chemistry) half-life McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc. Want to thank TFD for its existence?Tell a friend about us, ad...
The radioactive properties of this isotope are used to determine the age of many objects including fossils and rocks. The long half-life of this metal helps to find out the correct age of these objects. How Can Uranium-235 Affect Human Health?
Nuclear fissionThe impact of a slow (low-energy) neutron splitting the nucleus of the uranium isotope U-235 into two new nuclei. These can be nuclei of any of 30 or more elements ranging in atomic number from 30 to 64. Krypton and barium are examples. Energy and neutrons (2 or 3 for...
Empires, the award winning Half-Life 2 mod, combines the best of the first person shooter and real-time strategy genres. Fight as either the Northern Faction, remnants of the fallen nation of Jekotia, or as the imperial Brenodi Empire. Empires features: Four infantry classes Prepare a ...
The half-life of 176Lu, measured using gamma-ray spectrometry, has been found to be (3.56±0.07)×1010 yr. Comparison has been made between present results and literature data. Introduction The long-lived naturally occurring radionuclide 176Lu has been used, together with its β-decay product ...
摘要: spontaneous-fission half-life of8be 关键词: n68352* --physics (nuclear, theoretical)--nuclear properties & reactions, 6 <= a <= 19--nuclear reactions & scattering beryllium 8-- decay half-life nuclear models spontaneous fission