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Structure of low-spin states in the doubly-odd $^{182}Ir$ nucleus

Abstract : Low-spin states of $^{182}Ir$ were populated through the $\beta^+/EC$ decay of $^{182}Pt$. Two strong $E2$ transitions were observed for the first time: a 25.7keV transition in $^{182}Ir$ and a 34.0keV transition in Re of probable mass A = 178. Spin and parity, $I^\pi = 3^+$, are firmly assigned to the $^{182}Ir$ ground state (g.s.). For the excited states, the parity is established and the spin determined or restricted. These assignments support most of the interpretations of the level structure previously suggested. The systematics for the known $5^+ \to 3^+$ transitions in $\pi h_{9/2} \bigotimes ν 1/2^-[521]$ bands is presented. Using a semi-microscopic two-quasiparticle axial-rotor coupling model, particle configurations have been attributed or suggested for most of the coupled states lying at low energy in $^{182}Ir$.
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Submitted on : Friday, September 28, 2007 - 1:47:37 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:17 PM
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D. Hojman, J. Sauvage, B. Roussière, M.A. Cardona, G. Marguier, et al.. Structure of low-spin states in the doubly-odd $^{182}Ir$ nucleus. European Physical Journal A, EDP Sciences, 2007, 33, pp.193-212. ⟨10.1140/epja/i2007-10436-0⟩. ⟨in2p3-00166528⟩

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