Octupole fragmentation and the structure of {sup 134}Ba

Journal Article · Sat Mar 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.R1007· OSTI ID:515981

Zamfir, N V; Casten, R F ^[1]; Zamfir, N V ^[2]; Zamfir, N V ^[3]; Zamfir, N V; Cata-Danil, G ^[4]; Cottle, P D ^[5]; Deylitz, S; Gollwitzer, A; Graw, G; Hertenberger, R; Valnion, B ^[6]; Zhang, J ^[7]; Chou, W T ^[8]

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1. WNSL, Yale University, New Haven, Connecticut 06520 (United States)
2. Brookhaven National Laboratory, Upton, New York 11973 (United States)
3. Clark University, Worcester, Massachusetts 01610 (United States)
4. Institute of Atomic Physics, Bucharest-Magurele (Romania)
5. Florida State University, Tallahassee, Florida 32306 (United States)
6. Sektion Physik der Universitaet Muenchen, D-85748 Garching (Germany)
7. University of Tennessee, Knoxville, Tennessee 37996 (United States)
8. National Tsing Hua University, Hsinchu, Taiwan, Republic of (China)

The low energy octupole states in {sup 134}Ba were examined using the inelastic scattering of 22 MeV protons. Strong fragmentation of the low energy octupole strength, which was observed in {sup 196,198}Pt and was identified as a signature of the O(6) dynamical symmetry limit of the interacting boson approximation (IBA), does {ital not} occur in {sup 134}Ba, which has been proposed to have O(6) structure. The model calculations demonstrate that there is, in fact, little difference in the structure of the low-lying positive parity levels between certain nuclei in a U(5){r_arrow}SU(3) (vibrator{r_arrow}rotor) transition and an O(6) nucleus ({gamma}-soft nucleus), but that the octupole fragmentation has an enhanced sensitivity to the d-boson composition of the wave functions and thereby reveals differences in structure that are not easily discernible with other observables. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016; FG02-88ER40417; FG02-91ER40609
• OSTI ID: 515981
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARIUM 134
DEFORMED NUCLEI
ENERGY LEVELS
INTERACTING BOSON MODEL
NUCLEAR STRUCTURE
O GROUPS
OCTUPOLES
PARITY
SU-3 GROUPS
U GROUPS
WAVE FUNCTIONS