Quadrupole moments of high-spin isomers: test of the tilted-axis cranking model

D. L. Balabanski; K. Vyvey; G. Neyens; D. Almehed; P. Blaha; D. Borremans; S. Chmel; N. Coulier; R. Coussement; W. De Clercq; S. Frauendorf; G. Georgiev; H. Hubel; A. Lepine-Szily; M. Mineva; N. Nenoff; S. Pancholi; D. Rossbach; R. Schwengner; S. Teughels; P. M. Walker

arXiv · nucl-ex/0103012

Quadrupole moments of high-spin isomers: test of the tilted-axis cranking model

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Abstract

We report the results of recent measurements of the spectroscopic quadrupole moments of high-spin isomers. For the K=35/2- five-quasiparticle isomer in 179W we measured Q_s=4.00(+0.83)(-1.06)eb. It corresponds to a smaller deformation compared to the ground states of the W isotopes and is in disagreement with the current theoretical predictions. We also measured the quadrupole moment of the I=11- isomer in 196Pb, Q_s=(-)3.41(66)eb. It has the same proton s(-2)1/2 h9/2 i13/2 configuration as the one suggested for the I=16- magnetic bandhead which allows to deduce the quadrupole moment of the 16- state as Q_s=-0.316(97)eb. This small value proves the near sphericity of the bandhead.

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D. L. Balabanski, K. Vyvey, G. Neyens, D. Almehed, P. Blaha, D. Borremans, S. Chmel, N. Coulier, R. Coussement, W. De Clercq, S. Frauendorf, G. Georgiev, H. Hubel, A. Lepine-Szily, M. Mineva, N. Nenoff, S. Pancholi, D. Rossbach, R. Schwengner, S. Teughels, P. M. Walker. 2001-03-29. Quadrupole moments of high-spin isomers: test of the tilted-axis cranking model. https://arxiv.org/abs/nucl-ex/0103012

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