| americium |
a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
출처: wordnet.princeton.edu/perl/webwn
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| americium |
A manmade transuranic element; the next element following plutonium on the periodic table.
출처: legacystory.apps.em.doe.gov/text/close/close8.htm
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| americium |
or Am. An entirely man-made radioactive element created by the neutron bombardment of Plutonium. Am241, used in some types of domestic smoke detector, is relatively long-lived (half life is 458 years) and a very active alpha emitter (1167 million Bq per milligramme)
출처: www.llrc.org/jargonbuster.htm
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