Quadrupole moment measurements for strongly deformed bands in {sup 171,172}Hf

Journal Article · Fri Apr 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.044311· OSTI ID:21499562

Mukhopadhyay, S; Ma, W C; Ijaz, Q A; Marsh, J; Yadav, R B ^[1]; Janssens, R V. F.; Carpenter, M P; Khoo, T L; Lauritsen, T; Zhu, S ^[2]; Chiara, C J ^[2]; Chowdhury, P; Hota, S S; Lakshmi, S ^[3]; Cullen, D M ^[4]; Hagemann, G B ^[5]; Hartley, D J ^[6]; Kondev, F G ^[7]; Riedinger, L L ^[8]; Toh, Y ^[9]

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1. Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762 (United States)
2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Department of Physics, University of Massachusetts, Lowell, Massachusetts 01854 (United States)
4. Schuster Laboratory, University of Manchester, Manchester M13 9PL (United Kingdom)
5. The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen (Denmark)
6. Department of Physics, United States Naval Academy, Annapolis, Maryland 21402 (United States)
7. Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
8. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
9. 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, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 83; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DEFORMED NUCLEI
DOPPLER EFFECT
DSA METHOD
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FORECASTING
HAFNIUM 171
HAFNIUM 172
HAFNIUM 173
HAFNIUM 174
HAFNIUM 175
HAFNIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIFETIME
NUCLEI
POSTULATED PARTICLES
QUADRUPOLE MOMENTS
QUARKS
RADIOISOTOPES
SUPERDEFORMED NUCLEI
T QUARKS
TOP PARTICLES
YEARS LIVING RADIOISOTOPES