239Pu135I decaythermal neutron fissiongamma ray spectra140La decayAbsolute cumulative yields have been determined for 49 fission products representing 36 mass chains created during thermal-neutron fission of Pu, including 3 mass chains for which no prior data exist. Using Ge(Li) spectroscopy, ...
(b) enriching plutonium inplutonium-239by an isotopic separation process; UN-2 (b) enrichingplutonium-239inplutoniumby any isotopic separation process; UN-2 The fissioning of elements like uranium-235 andplutonium-239is caused by their absorption of neutrons. ...
英英释义 a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons 访问沪江小D查看plutonium 239的更多详细解释>相关短语 plutonium 239 phr. 钚-239 Cu 2 (OH) 2 (CO 3) 孔雀石 dimercaprol,2,3, ...
plutonium-239, readily undergoes fission and is used as a reactor fuel in nuclear power stations and in nuclear weapons. Symbol: Pu; atomic no: 94; half-life of239Pu: 24 360 years; valency: 3, 4, 5, or 6; relative density (alpha modification): 19.84; melting pt: 640°C; boiling ...
In the same year it was found that slow neutrons cause plutonium-239 to undergo fission. The fission releases more neutrons, hence can result in a nuclear chain reaction. (Seeuraniumfor more about chain reactions.) This discovery would lead to the use of plutonium as a source of nuclear ene...
The process of nuclear fission is how almost all plutonium is created. There are 20 known isotopes of plutonium, but only two are widely created: plutonium-238 and plutonium-239. Plutonium-239 is created when a Uranium-325 atom splits, ejecting a neutron which is captured by a uranium 238...
Trace amounts of plutonium-238, plutonium-239, plutonium-240, and plutonium-244 can be found in nature. Small traces of plutonium-239, a few parts per trillion, and its decay products are naturally found in some concentrated ores of uranium,[50] such as the natural nuclear fission reactor ...
specifically absorbed by bone marrow, and is used, especially the highly fissionable isotope Pu-239, as a reactor fuel and in nuclear weapons. Atomic number 94; melting point 640°C; boiling point 3,228°C; specific gravity 19.84 (25°C); valence 3, 4, 5, 6.cross-reference:Periodic Ta...
Because of fission process, neutrons get released and convert uranium-238 nuclei into plutonium-239. Plutonium-239 and plutonium-241 both are fissile, and hence, they can sustain a nuclear chain reaction. It is very well applicable in nuclear weapons and nuclear reactors. The melting point of ...
Pu-240 alpha to U-236, spontaneous fission 6560 6.8 910 The principal impurity of the Pu-239 isotope. The plutonium grade is usually listed as percentage of Pu-240. High spontaneous fission hinders use in nuclear weapons. Pu-241 beta, to Am-241 14.4 4.2 0.049 Decays to americium-241; it...