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词汇 Nuclear fission product
分类 英语词汇 英语翻译词典
释义

Nuclear fission product

中文百科

核裂变产物

裂变产物的质量数产额图：铀-235、钚-239、铀-233的热中子裂变产物

裂变产物即指核裂变过程中生成的产物。核裂变是指由较重的（原子序数较大的）原子，主要是指铀或钚，分裂成较轻的（原子序数较小的）原子的一种核反应形式。原子弹以及核电站的能量来源都是核裂变。早期原子弹应用（以铀-238制备的）钚-239为原料制成，而铀-235裂变在核电厂最常见，由钍-232制备的铀-233也在实验堆中使用。

英语百科

Nuclear fission product 核裂变产物

Fission product yields by mass for thermal neutron fission of U-235, Pu-239, a combination of the two typical of current nuclear power reactors, and U-233 used in the thorium cycle.
The external gamma dose for a person in the open near the Chernobyl disaster site.
The portion of the total radiation dose (in air) contributed by each isotope versus time after the Chernobyl disaster, at the site thereof. Note that this image was drawn using data from the OECD report, and the second edition of 'The radiochemical manual'.[8]
Per capita thyroid doses in the continental United States of iodine-131 resulting from all exposure routes from all atmospheric nuclear tests conducted at the Nevada Test Site. See also Downwinders.

Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons, the release of heat energy (kinetic energy of the nuclei), and gamma rays. The two smaller nuclei are the fission products. (See also Fission products (by element)).
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