Quadrupole moment measurements for strongly deformed bands in Hf171,172

S. Mukhopadhyay, W. C. Ma, R. V F Janssens, M. P. Carpenter, C. J. Chiara, P. Chowdhury, D. M. Cullen, G. B. Hagemann, D. J. Hartley, S. S. Hota, Q. A. Ijaz, T. L. Khoo, F. G. Kondev, S. Lakshmi, T. Lauritsen, J. Marsh, L. L. Riedinger, Y. Toh, R. B. Yadav, S. Zhu

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A lifetime experiment, using the Doppler-shift attenuation method, has been performed at Gammasphere to measure the transition quadrupole moments Q t of strongly deformed bands in Hf171 and Hf172. The measured value of Qt ~ 9.5 e b for the band labeled ED in Hf171 strongly supports the recent suggestion that this sequence and several structures with similar properties in neighboring Hf isotopes are associated with a near-prolate shape with a deformation enhanced relative to that of normal deformed structures. The measured values of Qt- 14 e b for the bands labeled SD1 and SD3 in Hf172 confirm that these sequences are associated with a prolate superdeformed shape, a property inferred in earlier work from other measured characteristics of the bands. Similar bands in Hf173-175 are also likely to be associated with superdeformed shapes. The observations are in contrast to predictions of cranking calculations performed with the ultimate cranker code. © 2011 American Physical Society.
    Original languageEnglish
    Article number044311
    JournalPhysical Review C - Nuclear Physics
    Volume83
    Issue number4
    DOIs
    Publication statusPublished - 13 Apr 2011

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