uranium 238- the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239 atomic number 92,uranium,U- a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons ...
Polonium ( 210 Po), uranium ( 238 U) and plutonium ( 239+240 Pu) in the biggest Polish rivers210Po238U239+240PuVistulaOderPomeranian RiversInflowPolandBaltic SeaIn the paper the results of determination of 210 Po, 238 U and 239+240 Pu radionuclides in the biggest Polish rivers are ...
Uranium-238 is also important because it absorbs neutrons to produce a radioactive isotope that subsequently decays to the isotope Plutonium-239, which also is fissionable by thermal neutrons. Uranium-235 can basically be used in nuclear weapons and nuclear reactors by making a nuclear chain ...
Polonium Po-210, uranium (U-234, U-238) and plutonium (Pu-238, Pu239+240) bioaccumulation in marine birds The aim of this work was the determination of (210) Po, (234) U,(238) U, (238) Pu and (239+240) Pu concentration in marine birds which permanently or tempo... Struminska...
英语解释 the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239相似短语 uranium 238 phr. 铀-238,贫铀 uranium 235 phr. 铀235 Cu 2 (OH) 2 (CO 3) 孔雀石 dimercaprol,2,3, dimercaptopropanol 二巯基丙醇 lotus...
Uranium has found great importance as a nuclear fuel, where 238U can be converted into fissionable plutonium through the following reaction: 238U(nγ)239U→ 239Np → 239Pu This nuclear conversion can be brought about in so called “breeder” reactors. However, 235U is of greater importance, ...
the U-235 is separated and concentrated from theheavier U-238. The common uranium isotope U-238 can be converted to plutonium-239 in“breeder” nuclear reactors. Pu-239 is fissionable and is often used in the production of nuclearbombs as well as in nuclear power plants. Another form of ...
(capable of being transmuted to fissile plutonium-239 in a nuclear reactor). An artificial fissile isotope, uranium-233, can be produced from natural thorium and is also important in nuclear technology. While uranium-238 has a small probability to fission spontaneously or when bombarded with fast...
uranium-238plutonium-239experimental fast reactor joyochemical analysisFor improvement of proliferation resistance, the protected plutonium production (PPP) concept has been proposed. The concept is to produce 238Pu which has high decay heat in fuels with appropriate 238Pu/239Pu ratio for higher ...
in 100 percent of the world's commercial reactors. but it's a problematic fuel. in most reactors, sustaining a chain reaction requires extremely rare uranium-235, which must be purified, or enriched, from far more common u-238. the reactors also leave behind plutonium-239, itself radio...