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New bands and spin-parity assignments in $^{111}$Ru

Abstract : The $^{111}$Ru nucleus, populated in the spontaneous fission of $^{248}$Cm has been studied by means of prompt gamma spectroscopy using the EUROGAM2 array. Spin and parity assignments, based on angular correlations, linear polarization, and conversion coefficient measurements differ from those available in the literature. New bands are reported, which incorporate $\gamma$ transitions seen previously but not placed in the scheme of $^{111}$Ru or placed incorrectly. The bands are interpreted as neutron excitations into subshells originating predominantly from the h 11/2, g 7/2 and s 1/2 spherical orbitals. The s 1/2 band, strongly mixed with the d 3/2, d 5/2 and g 7/2 configurations, is observed for the first time in this region.
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Submitted on : Tuesday, November 30, 2004 - 7:58:14 AM
Last modification on : Thursday, November 19, 2020 - 12:58:39 PM

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W. Urban, T. Rzaca-Urban, Ch. Droste, S.G. Rohozinski, J.L. Durell, et al.. New bands and spin-parity assignments in $^{111}$Ru. European Physical Journal A, EDP Sciences, 2004, 22, pp.231-239. ⟨10.1140/epja/i2003-10234-8⟩. ⟨in2p3-00023350⟩



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