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Curium (96 Cm) is an artificial element with an atomic number of 96. Because it is an artificial element, a standard atomic weight cannot be given, and it has no stable isotopes. The first isotope synthesized was 242 Cm in 1944, which has 146 neutrons. There are 19 known radioisotopes ranging from 233 Cm to 251 Cm.
Curium is a synthetic chemical element; it has symbol Cm and atomic number 96. This transuranic actinide element was named after eminent scientists Marie and Pierre Curie, both known for their research on radioactivity. Curium was first intentionally made by the team of Glenn T. Seaborg, Ralph A. James, and Albert Ghiorso in 1944, using the ...
curium-245: 8,500 270 niobium-94: 20,300 640 plutonium-239: 24,110 761 10 12 seconds (teraseconds) isotope half-life millennia 10 12 seconds protactinium-231: 32.76
Curium-251; Curium-252; This page was last edited on 7 October 2010, at 02:00 (UTC). Text is available under the Creative Commons Attribution ...
This page discusses each of the main elements in the mixture of fission products produced by nuclear fission of the common nuclear fuels uranium and plutonium. The isotopes are listed by element, in order by atomic number. Neutron capture by the nuclear fuel in nuclear reactors and atomic bombs also produces actinides and transuranium elements ...
The known isotopes of plutonium range from 227 Pu to 247 Pu. The primary decay modes before the most stable isotope, 244 Pu, are spontaneous fission and alpha decay; the primary mode after is beta emission. The primary decay products before 244 Pu are isotopes of uranium and neptunium (not considering fission products), and the primary decay ...
Transuranium element. Not to be confused with Transactinide element. The transuranium (or transuranic) elements are the chemical elements with atomic number greater than 92, which is the atomic number of uranium. All of them are radioactively unstable and decay into other elements.
Fertile material. Transmutation flow between 238 U and 245 Cm in LWR. [1] Speed of transmutation varies greatly by nuclide, and percentages are relative to total transmutation and decay. After removal of fuel from reactor, decay will predominate for shorter-lived isotopes such as 238 Pu, 241 Pu, 242–244 Cm; but 245–248 Cm are all long-lived.