Quadrupole moment measurements for strongly deformed bands in Hf-171, Hf-172 - INSPIRE

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Quadrupole moment measurements for strongly deformed bands in Hf-171, Hf-172

S. Mukhopadhyay
(
- Mississippi State U.
)
,
W.C. Ma
(
- Mississippi State U.
)
,
R.V.F. Janssens
(
- Argonne, PHY
)
,
M.P. Carpenter
(
- Argonne, PHY
)
,
C.J. Chiara
(
- Argonne, PHY and
- Maryland U., Dept. Chem.
)

Apr, 2011

7 pages

Published in:

Phys.Rev.C 83 (2011) 044311

DOI:

10.1103/PhysRevC.83.044311

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Abstract: (APS)

A lifetime experiment, using the Doppler-shift attenuation method, has been performed at Gammasphere to measure the transition quadrupole moments Qt 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.

23.20.Lv
27.70.+q
21.10.Tg
21.60.Ev

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Figures(0)

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