Quadrupole moment measurements for strongly deformed bands in ^(171,172)Hf

TY - JOUR

T1 - Quadrupole moment measurements for strongly deformed bands in (171,172)Hf

AU - Mukhopadyay...[et al.], S.

AU - Ma, W. C.

AU - Janssens, R.V.F.

AU - Carpenter, M.P.

AU - Hagemann, Gudrun Bertram

PY - 2011/4/13

Y1 - 2011/4/13

N2 - 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.

AB - 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.

U2 - 10.1103/physrevc.83.044311

DO - 10.1103/physrevc.83.044311

M3 - Journal article

SN - 2469-9985

VL - 83

SP - 044311

JO - Physical Review C

JF - Physical Review C

IS - 4

ER -