Elsevier

Nuclear Physics A

Volume 217, Issue 2, 24 December 1973, Pages 253-268
Nuclear Physics A

Ground-state α-decay of N = 128 isotones 216Ra, 217Ac and 218Th

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Abstract

The α-decay properties of very short-lived N = 128 isotones, 216Ra, 217Ac and 218Th, were investigated by the pulsed-beam method. Alpha emitters of interest were produced in the bombardment of 208Pb or 209Bi with 65–96 MeV 12C or 14N ions and α-decays were measured between natural beam bursts of the cyclotron. The results obtained are = 9.349±0.008 MeVand t12 = 182±10 ns for 216Ra, 9.650±0.010 MeV and 111±7 ns for 217Ac, 9.665±0.010 MeV and 96±7 ns for 218Th. The experimental reduced α-widths of N = 128 isotones from 212Po to 218Th are shown to agree well with the simple shell model calculation.

References (17)

  • R.D. Macfarlane et al.

    Nucl. Instr.

    (1963)
  • T. Nomura et al.

    Nucl. Instr.

    (1973)
  • T. Nomura et al.

    Phys. Lett.

    (1972)
  • K. Hiruta et al.

    Phys. Lett.

    (1973)
  • W.D. Myers et al.

    Nucl. Phys.

    (1966)
    W.D. Myers et al.

    Ark. Fys.

    (1967)
  • H.J. Mang

    Phys. Rev.

    (1960)
  • A.H. Wapstra et al.

    Nucl. Data Tables

    (1971)
There are more references available in the full text version of this article.

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On leave of absence from Department of Physics, Tokyo Institute of Technology.

††

Present address: Department of Physcs, The University of Manchester, England.

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