Shell Model Description of theN= 50 Isotones Between88Sr and100Sn

Blomqvist, J.; Rydström, L

doi:10.1088/0031-8949/31/1/006

Cited by 87 publications

(50 citation statements)

References 41 publications

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“…[66] with respect to the 78 Ni core and from the neutron single-hole energies of the 1p 1/2 , 0g 9/2 orbits [67]. The transformation of these single-particle energies to those relative to the 66 Ni core [68] has been performed on the and effective charges of e π = 1.72e, e ν = 1.44e [69], respectively, have been applied.…”

Section: A Shell-model Calculationsmentioning

confidence: 99%

“…High-spin states in 83 Rb, the even-N isotope between the two odd-odd nuclei 82 Rb and 84 Rb, had previously been studied via the reactions 81 Br(α,2n), 70 Zn( 16 O,p2n), 74 Ge( 12 C,p2n), 80 Se( 6 Li,3n) [34], 68 Zn( 18 O,p2n), and 59 Co( 28 Si,2p) [35]. In the course of the present work we learned about a study of 83 Rb using the 76 Ge( 11 B,4n) reaction [36].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: A Shell-model Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic dipole sequences inRb83

et al. 2009

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“…Isomers decaying by γ -ray transitions with half-lives T 1/2 on the order of μs preserve the excited states for γ -ray spectroscopy in fragmentation and in-flight separation experiments. In addition to accessing the structure of nuclei below the isomers, properties of electromagnetic transitions can be used to determine experimental transition strengths B(σ ; J π i → J π f ) for given multipolarities σ through which shell-model (SM) calculations [23][24][25][26][27][28][29][30][31][32] in the vicinity of 100 Sn can be scrutinized.…”

Section: Introductionmentioning

confidence: 99%

Properties of γ -decaying isomers and isomeric ratios in the Sn100 region

Park¹,

Krücken²,

Lubos³

et al. 2017

Phys. Rev. C

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Half-lives and energies of γ rays emitted in the decay of isomeric states of nuclei in the vicinity of the doubly magic 100 Sn were measured in a decay spectroscopy experiment at Rikagaku Kenkyusho (The Institute of Physical and Chemical Research) of Japan Nishina Center. The measured half-lives, some with improved precision, are consistent with literature values. Three new results include a 55-keV E2 γ ray from a new (4 + ) isomer with T 1/2 = 0.23(6) μs in 92 Rh, a 44-keV E2 γ ray from the (15 + ) isomer in 96 Ag, and T 1/2 (6 + ) = 13(2) ns in 98 Cd. Shell-model calculations of electromagnetic transition strengths in the (p 1/2 ,g 9/2 ) model space agree with the experimental results. In addition, experimental isomeric ratios were compared to the theoretical predictions derived with an abrasion-ablation model and the sharp cutoff model. The results agreed within a factor of 2 for most isomers. From the nonobservation of time-delayed γ rays in 100 Sn, new constraints on the T 1/2 , γ -ray energy, and internal conversion coefficients are proposed for the hypothetical isomer in 100 Sn.

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“…Moreover, l~176 is the last selfconjugate magic nucleus, where protons and neutrons in identical orbits and spin-orbit partners like gg/z--g7/2 come close to the Fermi surface. Thus it has become a challenge for nuclear structure experiments and theory to study the shell model structure 1-1-4], the residual interaction [5][6][7][8] and spin polarisation phenomena [-9, 10] as close as possible to Z=N=50. Recently, the three proton hole 0r -3) nucleus 9TAg was studied for the first time in beam [11].…”

Section: Introductionmentioning

confidence: 99%

Nuclear structure studies of the neutron deficientN=50 nucleus96Pd

Alber

Bertschat

Grawe

et al. 1989

Z. Physik A - Atomic Nuclei

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The neutron deficient nucleus 96pd, four proton holes below the doubly magic l~176 has been studied in the reaction 64Zn (36Ar, 2p 2n). In n 7 and 77 coincidences levels up to 7 MeV excitation energy were established, and a new neutron core-excited isomer with 7"1/2=35(4)ns and g=0.83(5) was identified. A detailed shell model study yields excellent agreement for states within the 7r(p~/2, g9/2) configuration space but fails to reproduce the isomerism and g-factor for the core-excited state.

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Shell Model Description of theN= 50 Isotones Between⁸⁸Sr and¹⁰⁰Sn

Cited by 87 publications

References 41 publications

Magnetic dipole sequences inRb83

Magnetic dipole sequences inRb83

Properties of γ -decaying isomers and isomeric ratios in the Sn100 region

Nuclear structure studies of the neutron deficientN=50 nucleus96Pd

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