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

Abstract : Four long-lived neutron-deficient Th isotopes with atomic mass numbers 211 to 218 and abundances of (1-10)x10(-11) relative to Th-232 have been found in a study of naturally-occurring Th using inductively coupled plasma-sector field mass spectrometry. It is deduced that long-lived isomeric states exist in these isotopes. The hypothesis that they might belong to a new class of long-lived high spin super- and hyperdeformed isomeric states is discussed.
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http://hal.in2p3.fr/in2p3-00175822
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Submitted on : Monday, October 1, 2007 - 2:33:51 PM
Last modification on : Friday, May 8, 2020 - 1:10:29 AM

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A. Marinov, I. Rodushkin, Y. Kashiv, L. Halicz, I. Segal, et al.. Existence of long-lived isomeric states in naturally-occurring neutron-deficient Th isotopes. Physical Review C, American Physical Society, 2007, 76, pp.021303. ⟨10.1103/PhysRevC.76.021303⟩. ⟨in2p3-00175822⟩

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