New Low Mass Isotopes of Emanation (Element 86)
Description:
Among the spallation products obtained from the 350-Mev proton bombardment of Th{sup 232} they have identified two gaseous alpha-emitters which apparently do not decay into any presently known alpha-decay chains. The half-lives observed for the decay of the alpha-activities are 23 minutes and 2.1 hours. These half-lives may be principally determined by an unknown amount of orbital electron capture. At least one alpha-emitting daughter (about 4 hours half-life) has been observed to grow from a g…
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Date:
September 5, 1949
Creator:
Ghiorso, A.; Meinke, W. W. & Seaborg, G. T.
Partner:
UNT Libraries Government Documents Department