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

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 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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Submitted on : Thursday, February 11, 2010 - 2:21:31 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:14 PM

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A. N. Andreyev, S. Antalic, D. Ackermann, T. E. Cocolios, V. F. Comas, et al.. The new isotope 179Pb and α-decay properties of 179Tlm. Journal of Physics G: Nuclear and Particle Physics, IOP Publishing, 2010, 37, 035102 (10 p.). ⟨10.1088/0954-3899/37/3/035102⟩. ⟨in2p3-00455966⟩

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