Levels of Ac230 and Th230 populated by decay of Ra230 and Ac230

J. Gilat, S. Katcoff, and L. K. Peker
Phys. Rev. C 21, 2041 – Published 1 May 1980
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Abstract

Decay schemes, based on γ-ray and β-ray spectroscopy, are proposed for 93-min Ra230 and 122-sec Ac230. Of 48 observed γ transitions following decay of Ra230, 39 are accommodated among 19 levels in Ac230. For decay of the Ac230, 135 γ transitions were observed and 98 are accounted for among 46 levels (22 known previously) in Th230. The ground state of Ac14189230 is assigned Iπ=Kπ=1+. A number of levels are discussed in terms of Nilsson orbital assignments. Qβ0.71 MeV for Ra230 and Qβ=2.70 MeV for Ac230.

RADIOACTIVITY Ra230, Ac230 from Th232(n,2pn)Ra230βAc230; radiochemistry, Ge(Li) and plastic detectors. Measured T12, Eγ, Iγ, Iβ; deduced Iβ, logft, decay schemes, J, π, Nilsson assignments.

  • Received 2 October 1979

DOI:https://doi.org/10.1103/PhysRevC.21.2041

©1980 American Physical Society

Authors & Affiliations

J. Gilat*, S. Katcoff, and L. K. Peker

  • Brookhaven National Laboratory, Upton, New York 11973

  • *Present address: Soreq Nuclear Research Center, Yavne, Israel.

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Vol. 21, Iss. 5 — May 1980

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