High spin level structure in127Ba produced by the118Sn(12C, 3n) reaction

Gizon, J.; Gizon, A.

doi:10.1007/bf01408619

Cited by 31 publications

(4 citation statements)

References 9 publications

(14 reference statements)

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“…This indicates a slightly oblate (7> 30 ~ shape for N= 80 nuclei but a weakly prolate (7 < 30~ deformation for N <_ 78 nuclei within the framework of the triaxial rotor-plus-particle model (TRPM) [12,133. A similar shape transition was observed in oddneutron nuclei where strongly coupled bands based on the h~ 2 state in 133-137Nd [14,15], 129-135Ce [15,16] and 127-133Ba [17][18][19] indicate a prolate deformation at N<77 but the decoupled bands in 139Nd [20] and 137Ce [5] suggest a slightly oblate shape for the N = 79 nuclei.…”

Section: Introductionsupporting

confidence: 66%

“…In the single particle diagram the g7/2 and ds/2 orbitals lie rather close in energy but there are indications in 146Gd region that these proton levels are not strongly mixed [25,26]. The TRP model has been also applied [16,18,19,27] to g7/2 neutron band structures in odd Xe, Ba and Ce nuclei. In 135pr the positive-parity levels 41.4 keV 5/2 +, 245.5 keV 7/2 +, 517.3 keV 9/2 +, 777.4 keV 11/2 +, 1,232.1 keV 13/2 +, 1,505.9 keV 15/2 + and 2,116.4 keV (17/2 +) are the most probable candidates for the g7/2 structure.…”

Section: Discussionmentioning

confidence: 96%

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Non-yrast level structure of135Pr

et al. 1985

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Levels of 135pr populated in the (p, 2n) reaction were studied using methods of in-beam y-ray and conversion electron spectroscopy. Many low-lying positive-parity states give evidence of a deformation of/~=0.15-0.20. The same conclusion is evident from band structures built on these positive-parity states and on the h~1/2 negative-parity state. The triaxial rotor-plus-particle model reproduces quite well band structures with /~=0.20 and ~=21 ~

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Section: Introductionsupporting

confidence: 66%

Section: Discussionmentioning

confidence: 96%

Non-yrast level structure of135Pr

et al. 1985

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“…The level schemes of 163 Re and 165 Re have many features in common with other odd-A transitional nuclei (for example, in the Xe and Ba nuclei) [40][41][42]. The signature partner bands have a large degree of signature splitting at low spin, which is similar to the heavier isotope 167 Re [11] and the analogous structures in the odd-A Ir [43] and Ta [24,44,45] isotopes.…”

Section: Discussionmentioning

confidence: 96%

Collective excitations in the transitional nucleiRe163andRe165

et al. 2015

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, 3p2nγ ) fusion-evaporation reactions at bombarding energies of 270 and 380 MeV, respectively. γ rays were detected at the target position using the JUROGAM spectrometer while recoiling ions were separated in-flight by the RITU gas-filled recoil separator and implanted in the GREAT spectrometer. The energy level schemes for 163 Re and 165 Re were identified using recoil-decay correlation techniques. At low spin, the yrast bands of these isotopes consist of signature partner bands based on a single πh 11/2 quasiproton configuration. The bands display large energy splitting consistent with the soft triaxial shape typical of transitional nuclei above N = 82. The configurations of the excited states are proposed within the framework of the cranked shell model.

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“…Experimental data on bands on the odd-A neighbouring Cs-, La-and Ba-nuclei were taken from [17][18][19][20].…”

Section: The Neighbouring Odd Nucleimentioning

confidence: 99%

Two-quasiparticle bands in126Ba

Schiffer

Dewald

Gelberg

et al. 1987

Z. Physik A - Atomic Nuclei

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High spin states of 126Ba have been populated via the 1168n (13C, 3n) reaction and were investigated by inbeam gamma-ray spectroscopy. Partially NaJ (T1)-BGO anti-compton shields were used. Two positive parity band crossings were established. The yrast band was observed up to a tentative 18 § level. The gamma-bands and two band structures of negative parity were found. In addition a tentative 3-state has been seen. Twoquasiparticle Routhians are constructed from the one-quasiparticle Routhians of the bands in the odd neighbouring isotopes and isotones and are compared to the ones observed in 126Ba. This leads to a h11/2 gv/2-neutron structure of the strongly coupled negative parity bands and a two-quasiproton structure of the decoupled bands of negative parity. The branching and mixing ratios for the neutron bands are analyzed.Nuclear Reactions: 1168n (13C, 3n7), E=46-61 MeV; measured E~, It(E), Iv(z), 7--7 -coinc. ~ 26Ba deduced levels, J, n, comparison of Routhians, enriched target, Ge-detector, anti-compton shield.

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High spin level structure in127Ba produced by the118Sn(12C, 3n) reaction

Cited by 31 publications

References 9 publications

Non-yrast level structure of135Pr

Non-yrast level structure of135Pr

Collective excitations in the transitional nucleiRe163andRe165

Two-quasiparticle bands in126Ba

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