Existence of long-lived isomeric states in naturally-occurring neutron-deficient Th isotopes

Abstract

Evidence for the existence of long-lived neutron-deficient isotopes has been found in a study of naturally-occurring Th using iductively coupled plasma-sector field mass spectrometry. They are interpreted as belonging to the recently discovered class of long-lived high spin super- and hyperdeformed isomers.

13 pages including 6 figures and 1 table

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