Quadrupole moment measurements for strongly deformed bands in {sup 171,172}Hf
- Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762 (United States)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics, University of Massachusetts, Lowell, Massachusetts 01854 (United States)
- Schuster Laboratory, University of Manchester, Manchester M13 9PL (United Kingdom)
- The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen (Denmark)
- Department of Physics, United States Naval Academy, Annapolis, Maryland 21402 (United States)
- Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
- Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195 (Japan)
A lifetime experiment, using the Doppler-shift attenuation method, has been performed at Gammasphere to measure the transition quadrupole moments Q{sub t} of strongly deformed bands in {sup 171}Hf and {sup 172}Hf. The measured value of Q{sub t} {approx} 9.5 e b for the band labeled ED in {sup 171}Hf 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 Q{sub t} {approx} 14 e b for the bands labeled SD1 and SD3 in {sup 172}Hf 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 {sup 173-175}Hf 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.
- OSTI ID:
- 21499562
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevC.83.044311; (c) 2011 American Institute of Physics; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DEFORMED NUCLEI
DOPPLER EFFECT
DSA METHOD
FORECASTING
HAFNIUM 171
HAFNIUM 172
HAFNIUM 173
HAFNIUM 174
HAFNIUM 175
LIFETIME
QUADRUPOLE MOMENTS
SUPERDEFORMED NUCLEI
T QUARKS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HAFNIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
POSTULATED PARTICLES
QUARKS
RADIOISOTOPES
TOP PARTICLES
YEARS LIVING RADIOISOTOPES