High-spin states and collective oblate bands in {sup 139}Nd

Journal Article · Mon Sep 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.034310· OSTI ID:21192192

Xu, Q; Zhu, S J; Che, X L; Wang, J G; Ding, H B; Gu, L ^[1]; Zhu, L H; Wu, X G; Liu, Y; He, C Y; Li, G S ^[2]

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1. Department of Physics, Tsinghua University, Beijing 100084 (China)
2. China Institute of Atomic Energy, Beijing 102413 (China)

High spin states in {sup 139}Nd nucleus have been reinvestigated with the reaction {sup 128}Te ({sup 16}O, 5n) at a beam energy of 90 MeV. The level scheme has been expanded with spin up to 47/2({Dirac_h}/2{pi}). At low spin, the yrast collective structure built on the {nu}h{sub 11/2}{sup -1} multiplet shows a triaxial shape with {gamma}{approx_equal}32 deg. according to calculations of the triaxial rotor-plus-particle model. The configurations for some high spin states have been discussed from a systematic comparison with neighboring nuclei. Three collective oblate bands with {gamma}{approx}-60 deg. at high spin were identified for the first time. A band crossing is observed around ({Dirac_h}/2{pi}){omega}{approx}0.4 MeV in one oblate band based on the 25/2{sup -} level. The characteristics for these oblate bands have been discussed.

• OSTI ID: 21192192
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEAMS
COMPARATIVE EVALUATIONS
CONFIGURATION
HIGH SPIN STATES
MEV RANGE 10-100
NEODYMIUM 139
NEUTRON EMISSION
NUCLEAR REACTIONS
OXYGEN 16
OXYGEN 16 BEAMS
PARTICLE MODELS
SPIN
TELLURIUM 128 TARGET