Yrast states in81Br and82Br

Funke, L.; Döring, J.; Kemnitz, P.; Ojeda, P.; Schwengner, R.; Will, E.; Winter, G.; Johnson, A.; Hildingsson, L.; Lindblad, Th.

doi:10.1007/bf01325124

Cited by 9 publications

(10 citation statements)

References 20 publications

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“…Prior to the present work, the low-lying states in 82 Br had been reported in Refs. [51,[56][57][58][59]. In Refs.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, Ref. [51] reported a sequence of positive-parity levels based on the 6 + state at 966.8 keV and assigned the π g 9/2 ⊗ νg 9/2 configuration to those levels.…”

Section: Resultsmentioning

confidence: 99%

“…With a neutron in the hole-like orbital g 9/2 , 82 Br is expected to exhibit a better chiral geometry than 78 Br and 80 Br, as the neutron Fermi surface in 82 Br is closer to the top of the g 9/2 subshell. However, no band structure has been observed in 82 Br so far [51]. In this paper, we report the candidate chiral doublet bands in the N = 47 odd-odd 82 Br nucleus.…”

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confidence: 81%

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New candidate chiral nucleus in the A≈80 mass region: Br473582

Liu¹,

Wang²,

Qi³

et al. 2019

Phys. Rev. C

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“…Prior to the present work, the low-lying states in 82 Br had been reported in Refs. [51,[56][57][58][59]. In Refs.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, Ref. [51] reported a sequence of positive-parity levels based on the 6 + state at 966.8 keV and assigned the π g 9/2 ⊗ νg 9/2 configuration to those levels.…”

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 81%

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New candidate chiral nucleus in the A≈80 mass region: Br473582

Liu¹,

Wang²,

Qi³

et al. 2019

Phys. Rev. C

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“…First discovered in 81 Kr [1,2], they were also observed in the isotopes 79,83 Kr [3,4], in the neighboring odd-N nuclide 83 Sr [5], and in the odd-Z nuclides 77,79,81 Br [6][7][8][9] and 79,81,83,85 Rb [10][11][12][13]. At that time, the strong M1 transitions were interpreted in the framework of a semiclassical coupling scheme for the spins of the involved nucleons [1,2].…”

Section: Introductionmentioning

confidence: 99%

Magnetic dipole sequences inRb83

et al. 2009

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High-spin states in 83 Rb were populated in the reaction 11 B + 76 Ge at beam energies of 45 and 50 MeV. γ rays were detected with the spectrometer GASP. The level scheme of 83 Rb was extended up to 13.9 MeV. Mean lifetimes of 23 levels were determined using the Doppler-shift-attenuation method. Among the bands newly established is a sequence comprising intense M1 transitions and crossover E2 transitions. This sequence turns out to be irregular and thus shows that magnetic rotation as observed in the neighboring odd-odd isotopes is not realized in this odd-even nuclide. Excited states in 83 Rb were interpreted in terms of the shell model using the model space π (0f 5/2 , 1p 3/2 , 1p 1/2 , 0g 9/2 ) ν(1p 1/2 , 0g 9/2 ). The configurations predicted for the negative-parity M1 sequence reproduce the M1 transition strengths fairly well.

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“…doubly-odd Br isotopes [5]. This resemblance lead us to suggest also positive parity for the states above the 5 (+) isomer and to propose a ("g9/2 | ug9/2 ) parentage.…”

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confidence: 99%

New isomers and states of (?g 9/2 ?vg 9/2) parentage in84Rb

Döring¹,

Winter²,

Funke³

et al. 1991

Z. Physik A - Hadrons and Nuclei

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84 ~kci ted states in the doubly-odd nucleus Rb have mainly been studied via the (~,n) reaction by means of in-beam y-ray spec_ trosoopy. Two new isomers ~e been found, a 5 level at 467. 1 keV and a 5' " level at 544.2 keV with half-lives of 9(2) nss(+) and 11(1) ns, respectively. On top of the isomer a level sequence with increasing spins up to I0 h and probably positive parity has been identified. These states are ascribed to the configuration("g9/2 | ~"g9/2 )" 84 For the doubly-odd nucleus 37Rb47 having one proton hole and three neutron holes in the respective closed (sub)shells at Z=38 and N=50 positive parity levels are e~ted where both the unpaired proton and the unpaired neutron move in the intruder g9/2 orbits. So far, in 84Rb only the y-decay of a long-lived 6-isomer at 463.7 keV to the 2-ground state and to a 3-level at 248.1 keV is well-studied [1,2]. Furthermore, some low-and medium-spin states are known from the transfer reactions 86Sr(d,~) [8] and 85Rb(p,d) [4]. To investigate excited states of higher spins in 84Rb the (~,n) reaction has mainly been employed. Targets of NaBr and NH~r with natural isotopic abundance have beer, bombarded with 13, 16, 19 and 27 MeV s-particles at the Rossendorf cyclotron. Excitation functions, angular distributions, y-y coincidences and nanosecond lifetimes have been measured using low-energy photon spectrometers. In addition, singles spectra have also been measured in the cross reactions 82Se(TLi,4n) and 80Se(7Li,3n) for an unambiguous assignment of y-rays to 84Rb. The results of these measurements are summarized in the level scheme given in fig. I. The placement of the 80.6 keV transition on top of the long-lived 6-isomer is supported by the two other deo~ay branches de-exciting the new 5 (+) level, where one branch is a cascade of 77.2 and 219.0 keV transitions with positive A 2 coefficients for both }'-rays. Thus, in connection with the excitation function a 5-assignment has been made for the level at 487.1 keV. For this 5-state and for the 5 (+) level half-lives of 9(2) ns and II(I) ns, respectively, have been deduced from the slopes of the background-corrected time distribu-tioz~s of the corresponding transitions. For the 80.6 keV y-ray (10+) 1759.4 bution is shown in fig. 2. L 1334.8

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Yrast states in81Br and82Br

Cited by 9 publications

References 20 publications

New candidate chiral nucleus in the A≈80 mass region: Br473582

New candidate chiral nucleus in the A≈80 mass region: Br473582

Magnetic dipole sequences inRb83

New isomers and states of (?g 9/2 ?vg 9/2) parentage in84Rb

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