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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. There are also ten known ...
Curium-244 alpha decays to 240 Pu, but it also absorbs neutrons, hence a small amount of heavier curium isotopes. Of those, 247 Cm and 248 Cm are popular in scientific research due to their long half-lives.
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
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Plutonium-244 is the most stable isotope of plutonium, with a half-life of about 80 million years. It is not significantly produced in nuclear reactors because 243 Pu has a short half-life, but some is produced in nuclear explosions. 244 Pu has been found in interstellar space [13] and has the second longest half-life of any non-primordial ...
ORNL actinides from HFIR (in parentheses) were involved in these superheavy element discoveries: flerovium-114 in 2000 (americium-243); moscovium-115 (americium-243), which was observed in 2004 ...
Some other actinides need more than one neutron capture before arriving at an isotope which is both fissile and long-lived enough to probably be able to capture another neutron and fission instead of decaying. plutonium-242 to americium-243 to curium-244 to curium-245; uranium-236 to neptunium-237 to plutonium-238 to plutonium-239
Global shortages of nuclear chemical needed for cancer scans will see patients’ appointments cancelled, minister warns