Journal Article10.1103/PHYSREVC.40.1255
Shape coexistence in 132Ba.
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TL;DR: The ground state of this nucleus is predicted to possess maximal triaxiality {gamma} similar to {minus}30{degree} as discussed by the authors, based on quasineutron configurations with large negative deformation close to the collective oblate shape.
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Abstract: Rotational states have been populated in {gamma}-soft {sup 132}Ba following the {sup 122}Sn({sup 13}C,3{ital n}{gamma}) reaction. The ground state of this nucleus is predicted to possess maximal triaxiality {gamma}{similar to}{minus}30{degree}. Two {Delta}{ital I}=2 bands were established, based on quasineutron configurations with large negative {gamma} deformations close to the collective oblate shape {gamma}={minus}60{degree}. The bandhead of one of these bands, associated with a ({nu}{ital h}{sub 11/2}){sup 2} configuration, was found to be isomeric with a mean lifetime {tau}=12.5{plus minus}0.3 ns. A third {Delta}{ital I}=2 band was observed, built on a two-quasiproton configuration with a near-prolate shape ({gamma}{similar to}0{degree}). In addition, two {Delta}{ital I}=1 bands, built on mixed proton-neutron four-quasiparticle configurations with oblate shapes ({gamma}{similar to}{minus}60{degree}), were established.
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Citations
Nuclear Data Sheets for A=132
TL;DR: In this article, the decay of 132La to 132Ba has been studied in several works, including some recent papers, but in the opinion of the evaluators, this decay scheme still suffers from incompleteness, especially from the point of view of separate level schemes from the ground state and the isomeric activities.
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Triaxial angular momentum projection and configuration mixing calculations with the Gogny force
Tomás R. Rodríguez,J. Luis Egido +1 more
TL;DR: In this article, the generator coordinate method with full triaxial angular momentum and particle number projected wave functions using the Gogny force was implemented in the plane of the generator.
Systematics of triaxial deformation in Xe, Ba, and Ce nuclei
TL;DR: The ([beta],[gamma]) deformation parameters of even-even Xe, Ba, and Ce nuclei have been calculated by using the triaxial rotor model and the smooth dependence of the deformed parameters on [ital Z] and [ital N] is discussed.
63
High-spin states in Ce 136 : Systematics of collective oblate rotation
TL;DR: The level structure of the transitional even-even {sup 136}Ce nucleus has been investigated using the {sup 122}Sn({sup 18}O, 4{ital n}{gamma}) reaction, and tentative evidence is presented for a weak band showing an enhanced dynamic moment of inertia, built on the highly deformed ({nu}{ital i}{sub 13/2}){sup 2} prolate configuration.
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References
Rotational states in even atomic nuclei
A.S. Davydov,G.F. Filippov +1 more
TL;DR: In this paper, a theory of the energy states and the electromagnetic transitions between them for nuclei which do not possess axial symmetry was developed and the reduced probabilities for E2 and M1 transitions between various rotational states were computed.
1K
Rotational bands and particle-hole excitations at very high spin
TL;DR: In this paper, a method of calculating high-spin states of nuclei within the cranked Nilsson-Strutinsky framework is presented and discussed in some detail, such as shape coexistence, shape changes, band crossings and band terminations.
789
Microscopic study of the high-spin behaviour in selected A ~= 80 nuclei
TL;DR: The collective and non-collective high-spin configurations in selected A ⋍ 80 nuclei are analyzed in detail using a shell-correction approach taking care of individual configurations and the pairing self-consistent cranking method with a non-axially deformed Woods-Saxon potential as discussed by the authors.
771
Coupling of Angular Momenta in Odd-Odd Nuclei
TL;DR: In this paper, the angular momenta of individual particle states in odd-odd nuclei are described as spin-spin coupling if the asymptoticquantum number description of particle states is used for deformed nuclei.
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