Curium is a transuranic, radioactive chemical element with the symbol Cm and atomic number 96. This element of the actinide series 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 cyclotron at Berkeley. They bombarded a piece of the newly discovered element plutonium (isotope 239) with alpha-particles. This was then sent to the Metallurgical Laboratory at the University of Chicago where a tiny sample of curium was eventually separated and identified. The discovery was kept secret until after the end of the World War II. The news was released to the public in November 1947. Most curium is produced by bombarding uranium or plutonium with neutrons in nuclear reactors – one tonne of spent nuclear fuel contains about 20 grams of curium.
Elven gymyk yw kuriom, niver 96 y'n Vosen Beriodek. Y furvell gymyk yw Cm. Henwys yw dhe enora Pierre ha Marie Curie. I a gavas an Pewas Nobel rag fysegieth yn 1903. Peryllus yw kuriom drefen y vos radyoweythresek. Gwrys veu rag an kynsa prys gans bagas yn Pennskol Kaliforni, Berkeley yn hav 1944. An tri o Glenn Seaborg, Ralph James hag Albert Ghiorso. Usys yw dhe wul rewloryon kolon ha morverkow golyans, hag war gannasethow efanvos drefen y vos gasa tomder yn-mes. Alkan arghansek yw kuriom gans 14 isotop. Radyowethyresek yns i oll. Yma an hanter bewnans hirra dhe guriom-247, hemm yw 16 milvil bledhen. Usys yw an keskorrans a guriom dhyworth plutoniom dhe lehe kreun plutoniom an Norvys gans y dreylya dhe neppyth dhe les.langbot langbot