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Curium is a synthetic chemical element; it has symbol Cm and atomic number 96. ... They bombarded the newly discovered element plutonium (the isotope 239 Pu) ...
Ralph Arthur James (23 September 1920 in Salt Lake City, Utah [1] – 24 February 1973 in Alamo, California) was an American chemist at the University of Chicago who co-discovered the elements curium (1944) and americium (1944–1945). Later he worked at UCLA and for the Lawrence Livermore laboratory in California.
Perey discovered it as a decay product of 227 Ac. [183] Francium was the last element to be discovered in nature, rather than synthesized in the lab, although four of the "synthetic" elements that were discovered later (plutonium, neptunium, astatine, and promethium) were eventually found in trace amounts in nature as well. [184]
In the 1970s, some transuranium elements were being synthesized at the HFIR-REDC complex in a valley adjacent to ORNL’s main campus. “At HFIR, scientists started with curium and americium ...
Named for the Americas, because it was discovered in the United States; by analogy with europium . The name of the continent America itself is derived from the name of the Italian navigator Amerigo Vespucci. Curium (Cm) 96 Curie, Marie and Pierre eponym Named in honour of Marie and Pierre Curie, who discovered radium and researched radioactivity.
His patent on curium never proved commercially viable because of the element's short half-life, but americium is commonly used in household smoke detectors and thus provided a good source of royalty income to Seaborg in later years.
Of the 118 elements, 19 are connected with the names of 20 people. 15 elements were named to honor 16 scientists (as curium honours both Marie and Pierre Curie). Four others have indirect connection to the names of non-scientists. [1] Only gadolinium and samarium occur in nature; the rest are man-made.
One of Ghiorso's breakthrough instruments was a 48-channel pulse height analyzer, which enabled him to identify the energy, and therefore the source, of the radiation. During this time they discovered two new elements (95, americium and 96, curium), although publication was withheld until after the war. [9]