The new isotope 179Pb and α-decay properties of 179Tlm

A. N. Andreyev, S. Antalic, D. Ackermann, T. E. Cocolios, V. F. Comas, J. Elseviers, S. Franchoo, S. Heinz, J. A. Heredia, F. P. Heberger, S. Hofmann, M. Huyse, J. Khuyagbaatar, I. Kojouharov, B. Kindler, B. Lommel, R. Mann, R. D. Page, S. Rinta-Antila, P. J. SappleŠ Šáro, P. Van Duppen, M. Venhart, H. V. Watkins

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    Abstract

    The new isotope 179Pb has been produced in the complete fusion reaction 40Ca + 144Sm → 179Pb+5n at the velocity filter SHIP (GSI). Its α-decay energy of 7350(20) keV and half-life value of 3.5+1.4- 0.8 ms were deduced based on the recoil-α-α correlation technique. A spin parity of I π = (9/2-) was tentatively assigned to the ground state of 179Pb; thus, it is based on the 1h9/2 orbital. Improved measurements of the α-decay properties of 179Tl m and 175Aum are also presented. © 2010 IOP Publishing Ltd.
    Original languageEnglish
    Article number035102
    JournalJournal of Physics G: Nuclear and Particle Physics
    Volume37
    Issue number3
    DOIs
    Publication statusPublished - 2010

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