Deformation in odd-mass nuclei near A ∼ 100: one- and three-quasiparticle nilsson states in 9939Y60

doi:10.1016/0375-9474(85)90424-5

Nuclear Physics A

Volume 439, Issue 3, 17 June 1985, Pages 510-534

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Abstract

The deexcitation of the 8.6 μs isomer of ⁹⁹₃₉Y has been studied using γ-ray spectroscopy techniques at LOHENGRIN and JOSEF. The resultant level scheme is analyzed within the ' framework of the particle-rotor coupling model. The ground-state band, to spin $192^{u+}$ , is found to have band properties consistent with a $π[422 52]$ Nilsson assignment. The 8.6 μs isomer and a side band with a band-head half-life of 1.4 ns are found to have J^π values of $172^{+}$ and $112^{+}$ , respectively. Their properties are consistent with a ${π[422 52]ν[411 32]ν[404 92]}$ assignment. Some evidence is given for the dominance of the νν interaction over the πν interaction in these three-quasiparticle partners.

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^∗: 1982–1983 Fulbright Distinguihed Proffessor and Summer Visitor to IKP-KFA. Permament address: Nuclear Chemistry Division, UC-LLNL POBox 808, Livermore, California 94550 USA.

^∗∗: On 1983/1984 leave of absence from: Reserch Reactor Institute, Kyoto University, Kumatori-cho, Senn-gun, Osaka, 590-04, Japan.

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Nuclear Physics A

Deformation in odd-mass nuclei near A ∼ 100: one- and three-quasiparticle nilsson states in 9939Y60

Abstract

Nucl. Instr. Meth.

Phys. Lett.

Nucl. Phys.

Phys. Rev.

Phys. Rev.

Phys. Rev. Lett.

Z. Phys

Z. Phys

Phys. Rev. Lett.

Z. Phys.

Nucl. Instr.

Deformation in odd-mass nuclei near A ∼ 100: one- and three-quasiparticle nilsson states in ⁹⁹₃₉Y₆₀