释义 |
DictionarySeeactinonactinium emanation
actinium emanation[‚ak′tin·ē·əm ‚em·ə′nā·shən] (nuclear physics) actinon actinium emanation
ac·tin·i·um em·a·na·tionradon-219. See: emanon. actinium emanation A radioisotope associated with actinium identified in 1904, which has a half-life of 3.96 seconds and correspond to 219Rn.actinium emanationThe radioactive gas given off by actinium; a radioactive isotope of actinium. Synonym: actinonSee also: emanation |