High-spin states and collective oblate bands in the odd-odd {sup 138}Pr nucleus

Journal Article · Thu Mar 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.034304· OSTI ID:20995117

Li, M L; Zhu, S J; Che, X L; Yu, Y N; Chen, Y J; Ding, H B ^[1]; Zhu, L H; Wu, X G; Wen, S X; He, C Y; Cui, X Z; Liu, Y ^[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 the odd-odd {sup 138}Pr nucleus were reinvestigated with the reaction {sup 128}Te({sup 14}N,4n) at a beam energy of 64 MeV. Six collective bands were observed, and two of them were newly identified. For the {pi}h{sub 11/2}x{nu}h{sub 11/2} band, high-spin states are followed up to I{sup {pi}}=16{sup +}. The spin values for this band have been reassigned based on the systematical comparison with the neighboring nuclei. The observed band crossing is proposed to be due to the alignment of protons, and the signature inversion with the neutron number changing in La and Pr isotopes has been discussed. The other five collective bands are proposed to be based on oblate deformation with {gamma}{approx}-60 deg.

• OSTI ID: 20995117
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
HEAVY ION REACTIONS
HIGH SPIN STATES
MASS NUMBER
MEV RANGE 10-100
NEUTRONS
NITROGEN 14
PRASEODYMIUM 138
PROTONS
SPIN
TELLURIUM 128