FastM1 transitions in85Rb

Winter, G.; Döring, J.; Dönau, F.; Funke, L.

doi:10.1007/bf01294747

Cited by 4 publications

(5 citation statements)

References 12 publications

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“…As shown by Winter et al [45] in their discussion of (3qp) configurations in 8SRb, such large M1 strengths can also be reproduced by a [7~g9/2• v2g9/2] structure and do not prove an aligned g9/2 (3p) proton configuration. We note here the large M1 transition rate (0.9 ~t~v) of the 226keV 25}2+~23/2 + transition (assuming the E2/M1 mixing ratio ~ = 0).…”

Section: Comparison With the "Core" Nucleus 86zr Interpreted With Thementioning

confidence: 87%

Heavy-ion in-beam studies of the nucleus87Nb

Jungclaus

Lieb

Gross

et al. 1991

Z. Physik A - Hadrons and Nuclei

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High spin states in the transitional nucleus 87Nb up to 14MeV excitation have been established for the first time via the reactions 4~176 3p)STNb and 58Ni (32S, 3p)87Nb. The 87Nb y-radiations have been identified through y-ray spectra taken in coincidence with the evaporation residues detected in the Daresbury recoil separator or with multiple proton emission. Gamma-gamma coincidences, DCO ratios, y-ray angular distributions and lifetimes have been measured. A total of some 100 transitions have been placed into a level scheme comprising of sixty states. The one-quasiparticle (lqp) bands of either parity and several other band-like structures have been identified, some containing aligned g9/2 nucleons.Moderately enhanced E2 in-band transitions of 13-48 W.u. as well as several weak E2 yrast transitions connecting bands with different quasiparticle numbers have been found. Similarities with respect to the N= 46 isotones 83Rb, 84Sr, 85y, S6Zr and 88M0 are discussed.

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Section: Comparison With the "Core" Nucleus 86zr Interpreted With Thementioning

confidence: 87%

Heavy-ion in-beam studies of the nucleus87Nb

Jungclaus

Lieb

Gross

et al. 1991

Z. Physik A - Hadrons and Nuclei

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“…[7]. With decreasing excitation energy an increase of the sidefeeding times according to τ sf = (E * − E/MeV) × 0.03 ps was assumed [8,13,33,[48][49][50]. Examples of the line-shape analysis are shown in Fig.…”

Section: B Lifetimesmentioning

confidence: 99%

“…For the slowing-down the cross sections given in Ref. [47] were used with correction factors of f e = 0.9 and f n = 0.7 for the electronic and nuclear stopping powers, respectively [8,13,33,[48][49][50]. To extract the level lifetimes, cascade feeding from all levels observed above the considered one as well as sidefeeding from unobserved levels was taken into account.…”

Section: B Lifetimesmentioning

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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“…As a result of recent investigations of nuclei in the vicinity of the shell closures at Z = 38, 40 and N = 50 the important role of excitations of protons and neutrons in the lg9/2 shell has been demonstrated [1][2][3][4][5][6]. Most of the experimentally observed data, especially transition probabilities, could be reproduced by large scale shell-model calculations.…”

Section: Introductionmentioning

confidence: 81%