Two Quasiparticle Isomers and Bands of (154,156)Nd, (156,158)Sm

The decay of a new 3.2 mus, (4(-)) isomeric state at 1298.0 keV has been observed using gamma-ray spectroscopy at the Lohengrin mass spectrometer of the Institut Laue-Langevin. Prompt gamma-ray data from a spontaneous fission experiment have also been analyzed allowing the observation of a collectiv...

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Main Authors: Simpson, G S, Genevey, W, Urban, J, Orlandi, R, Pinston, J A, Scherillo, A, Smith, A G, Smith, J F, Ahmad, I, Greene, J P
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:The decay of a new 3.2 mus, (4(-)) isomeric state at 1298.0 keV has been observed using gamma-ray spectroscopy at the Lohengrin mass spectrometer of the Institut Laue-Langevin. Prompt gamma-ray data from a spontaneous fission experiment have also been analyzed allowing the observation of a collective band on top of this isomeric state, the identification of a new band on top of the previously reported (5(-)) isomer of (156)Nd and the extension of collective bands on top of (5(-)) isomers of the neighboring (156,158)Sm nuclei. Quasiparticle rotor model calculations correctly predict the energies and decay patterns of these bands.
ISSN:0094-243X
DOI:10.1063/1.3258216