The new isotope 179Pb and α-decay properties of 179Tlm
- N. Andreyev, A.
- Antalic, S.
- Ackermann, D.
- E. Cocolios, T.
- F. Comas, V.
- Elseviers, J.
- Franchoo, S.
- Heinz, S.
- A. Heredia, J.
- P. Heßberger, F.
- Hofmann, S.
- Huyse, M.
- Khuyagbaatar, J.
- Kojouharov, I.
- Kindler, B.
- Lommel, B.
- Mann, R.
- D. Page, R.
- Rinta-Antila, S.
- J. Sapple, P.
- Šáro, Š.
- Van Duppen, P.
- Venhart, M.
- V. Watkins, H.
DOIAbstract
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 Iπ = (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 179Tlm and 175Aum are also presented
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