Low-lying levels in<sup>83</sup>Kr

Cartwright, C M; Forsyth, P.D.; Hall, I.; Irving, A.D.; Martin, Douglas

doi:10.1088/0305-4616/7/1/012

Cited by 16 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its yield curve rises more steeply than that of the 1122keV transition and its relatively high intensity is suggestive of an yrast transition. We therefore propose a J" = 15/2+ assignment to the 2266 keV level in contradiction to the assignment J" = 9/2+ by Cartwright et a1 [9]. On the basis of the steep slope of the yield curve of the 1362 k e y transition, we tentatively assign J = 17/2 to the 2484 keV level.…”

Section: Spin and Panty Assignmentscontrasting

confidence: 79%

“…Some preliminary data derived from the "Se(&, n ~) ~~K r reaction has been previously reported in [7], and cited by Lederer et al [8]. As our investigation was in its final stages, a similar study of levels in 83Kr was published by Cartwright et al [9]. That work deals primarily with experimental data from the ?3e(a, ny)83Kr reaction, but also includes some results from Coulomb excitation of 83Kr.…”

Section: Introductionmentioning

confidence: 60%

“…6 keV levels. The angular distribution of the 1122 keV y-transition has a AJ = 2 character and the short lifetime of 7 = 1.7 ps [9] indicates an electric quadrupole type. In addition the steeply rising yield curve and the fact that no decay to the 7/2+ level is observed are consistent with a J" = 13/2+ assignment.…”

Section: Spin and Panty Assignmentsmentioning

confidence: 99%

See 2 more Smart Citations

Level Structure of⁸³Kr from the⁸⁰Se(α,nγ)⁸³Kr Reaction

Eskola

Leino

et al. 1982

Phys. Scr.

View full text Add to dashboard Cite

The level structure of 83Kr up to about 3 MeV has been studied using the "Se(, , ny) reaction. Spin and panty assignments are based on singles and coincidence y-ray spectra, on measured angular distributions and on excitation curves. The results are discussed in terms of a particle-rotor model.slightly deformed transitional nuclide. In calculating the level structure of 83Kr, we have used a particle-rotor model based on non-spheroidal Woods-Saxon potentials. The model has been used as Presented in [I61 and as applied by Katajanheimo and Ha"ar6n [ 171.

show abstract

Section: Spin and Panty Assignmentscontrasting

confidence: 79%

Section: Introductionmentioning

confidence: 60%

See 1 more Smart Citation

Level Structure of⁸³Kr from the⁸⁰Se(α,nγ)⁸³Kr Reaction

Eskola

Leino

et al. 1982

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Experimental data taken from Refs. [13][14][15][16][17][32][33][34][35][36][37][38][39][40][41][42]. Also shown is the B(E2; 2 + 1 → 0 + 1 ) value predicted for 78 Ni in Ref.…”

Section: Systematic Uncertaintiesmentioning

confidence: 99%

Lifetimes of low-lying excited states in Kr503686

Henderson¹,

Chester²,

Ball³

et al. 2018

Phys. Rev. C

View full text Add to dashboard Cite

Background: The evolution of nuclear magic numbers at extremes of isospin is a topic at the forefront of contemporary nuclear physics. N = 50 is a prime example, with increasing experimental data coming to light on potentially doubly-magic 100 Sn and 78 Ni at the proton-rich and protondeficient extremes, respectively, however experimental discrepancies exist in the data for less exotic systems. Purpose: In 86 Kr the B(E2; 2 + 1 → 0 + 1) value-a key indicator of shell evolution-has been experimentally determined by two different methodologies, with the results deviating by 3σ. Here, we report on a new high-precision measurement of this value, as well as the first measured lifetimes and hence transition strengths for the 2 + 2 and 3 − (2) states in the nucleus. Methods: The Doppler-shift attenuation method was implemented using the TIGRESS gamma-ray spectrometer and TIGRESS integrated plunger (TIP) device. High-statistics Monte-Carlo simulations were utilized to extract lifetimes in accordance with state-of-the-art methodologies. Results: Lifetimes of τ (2 + 1) = 336 ± 4(stat.) ± 20(sys.) fs, τ (2 + 2) = 263 ± 9(stat.) ± 19(sys.) fs and τ (3 − (2)) = 73 ± 6(stat.) ± 32(sys.) fs were extracted. This yields a transition strength for the first-excited state of B(E2; 2 + 1 → 0 + 1) = 259 ± 3(stat.) ± 16(sys.) e 2 fm 4. Conclusions: The measured lifetime disagrees with the previous Doppler-shift attenuation method measurement by more than 3σ, while agreeing well with a previous value extracted from Coulomb excitation. The newly extracted B(E2; 2 + 1 → 0 + 1) value indicates a more significant reduction in the N = 50 isotones approaching Z = 40.

show abstract

“…]/5 is the effective vibrator charge, and gg, gz and g~ are, respectively, the collective, orbital and spin gyromagnetic ratios.The mixing ratio 6(E2/M1) for the E2 and M1 transitions reads[4] If) = (gs c + g,D + gRE),uN(8 b) and the quantities A, B, C, D and E are calculated from the model wave functions. The Hamiltonian was diagonalized with the following set of parameters:(a) pairing strength G=0.29MeV, which follows from the estimate of Kisslinger and Sorensen [5] (G = 25/.4 MeV);(b) phonon energy hcoe=l.56MeV, is the experimental energy of 2~ state in the single-closed-shell S6Kr nucleus[6];…”

mentioning

confidence: 99%

Semi microscopic description of84Kr

Dias

Krmpotić

Losano

et al. 1986

Z. Physik A - Atomic Nuclei

View full text Add to dashboard Cite

The experimental information on the S*Kr nuclei is compared with the model calculation in which two neutron holes are coupled to the vibrational field. Based on the lower-order terms of a perturbative expansion of the E2 and M1 transition matrix elements, a simple rule is obtained for the sign and the magnitude of the 6(E2/M1) ratios for the transitions between the second and first 2 + states in some vibrational nuclei.[Nuclear structure S4Kr, calculated levels J, ~ and 6(E2/M1), Cluster-phonon model.Pairing interaction].

show abstract

Low-lying levels in⁸³Kr

Cited by 16 publications

References 17 publications

Level Structure of⁸³Kr from the⁸⁰Se(α,nγ)⁸³Kr Reaction

Level Structure of⁸³Kr from the⁸⁰Se(α,nγ)⁸³Kr Reaction

Lifetimes of low-lying excited states in Kr503686

Semi microscopic description of84Kr

Contact Info

Product

Resources

About

Low-lying levels in83Kr

Cited by 16 publications

References 17 publications

Level Structure of83Kr from the80Se(α,nγ)83Kr Reaction

Level Structure of83Kr from the80Se(α,nγ)83Kr Reaction

Lifetimes of low-lying excited states in Kr503686

Semi microscopic description of84Kr

Contact Info

Product

Resources

About

Low-lying levels in⁸³Kr

Level Structure of⁸³Kr from the⁸⁰Se(α,nγ)⁸³Kr Reaction

Level Structure of⁸³Kr from the⁸⁰Se(α,nγ)⁸³Kr Reaction