O(6)-symmetry breaking in the {gamma}-soft nucleus {sup 126}Xe and its evolution in the light stable xenon isotopes

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

DOI:https://doi.org/10.1103/PHYSREVC.83.044318· OSTI ID:21499569

Coquard, L; Pietralla, N; Leske, J; Moeller, O; Moeller, T ^[1]; Rainovski, G ^[1]; Ahn, T ^[1]; Bettermann, L; Rother, W ^[2]; Carpenter, M P; Janssens, R V. F.; Lister, C J; Zhu, S ^[3]; Werner, V ^[4]

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1. Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)
2. Institut fuer Kernphysik, Universitaet Koeln, Zuelpicher Strasse 77, D-50937 Koeln (Germany)
3. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
4. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520 (United States)

Low-lying collective states in {sup 126}Xe have been investigated via the {sup 12}C({sup 126}Xe,{sup 126}Xe{sup *}) projectile Coulomb excitation reaction at 399 MeV. The {gamma} decays were detected with the Gammasphere array. Coulomb excitation cross sections relative to the 2{sub 1}{sup +} state were obtained. Twenty-two absolute E2 transition strengths have been deduced. An sd- interacting boson model (IBM-1) fit agrees well with the new experimental data. This makes a quantitative test of O(6)-symmetry breaking in {sup 126}Xe possible. The measured absolute B(E2) values indicate a preservation of O(5) symmetry, while the O(6) symmetry is broken. The evolution of O(6)-symmetry breaking and of O(5)-symmetry conservation in the {sup 124,126,128}Xe isotopic chain is discussed.

• OSTI ID: 21499569
• 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
CARBON 12 TARGET
COULOMB EXCITATION
CROSS SECTIONS
DECAY
E2-TRANSITIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
GAMMA DECAY
GAMMA SPECTROSCOPY
INTERACTING BOSON MODEL
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
MULTIPOLE TRANSITIONS
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEI
PRESERVATION
SHELL MODELS
SPECTROSCOPY
STABLE ISOTOPES
SYMMETRY BREAKING
TARGETS
XENON 124
XENON 126
XENON 128
XENON ISOTOPES