Quadrupole collectivity beyond 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>50</mml:mn></mml:mrow></mml:math>
 in neutron-rich Se and Kr isotopes

Elman, B.; Gade, A.; Weißhaar, D.; Barofsky, Douglas F.; Bazin, D.; Bender, P. C.; Bowry, M.; Hjorth‐Jensen, M.; Kemper, K. W.; Lipschutz, S.; Lunderberg, E.; Sachmpazidi, N.; Terpstra, N.; Walters, W. B.; Westerberg, Arthur W.; Williams, S. J.; Wimmer, K.

doi:10.1103/physrevc.96.044332

Cited by 16 publications

(13 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[31] indicates that the angular resolution in that experiment was similar to the one assumed here. Depending on the resolution indeed a maximum scattering angle can be chosen, here θ = 2.4 • [31], so that nuclear contributions and absorption effects are negligible [see green dashed line in Fig. 9(b)].…”

Section: A the Minimum Impact Parameter (Maximum Scattering Angle) Asupporting

confidence: 68%

“…In Figure 9(b), the corresponding cross-section angular distribution is shown for the case of 88 Kr excited on a 209 Bi target at a midtarget energy of 58.5 MeV/u which was recently discussed in Ref. [31]. In this case, a significantly larger maximum scattering angle of θ max = 3.2 • is obtained.…”

Section: A the Minimum Impact Parameter (Maximum Scattering Angle) Amentioning

confidence: 61%

“…In the analyses of experiments performed at NSCL, using beam energies in the range from 40 to 80 MeV/u, cuts on the scattering angle were applied to limit the analysis to peripheral collisions in which nuclear contributions are assumed to be negligible ("safe" impact parameter criterion touching spheres plus 2 fm); see Refs. [30,31] and overview tables in [32,33]. At the higher beam energies in the order of 150 MeV/u, which are usually employed for experiments at GSI and RIKEN [28,29,[34][35][36], this technique is not valid any longer as will be illustrated below.…”

Section: Determination Of Exclusive Scattering Cross Sectionsmentioning

confidence: 99%

See 2 more Smart Citations

In-beam γ -ray spectroscopy of Te136 at relativistic energies

Vaquero¹,

Jungclaus²,

Doornenbal³

et al. 2019

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

The reduced transition probability B(E 2; 0 + 1 → 2 + 1) to the first excited 2 + state of the neutron-rich nucleus 136 Te, with two protons and two neutrons outside the doubly magic 132 Sn core, was measured via Coulomb excitation at relativistic energies at the RIKEN Radioactive Isotope Beam Factory. A value of B(E 2) = 0.191(26) e 2 b 2 was extracted from the measured inelastic scattering cross section on an Au target taking into account the contributions from both Coulomb and nuclear excitations. In addition, an upper limit for the transition strength to a 2 + state of mixed-symmetry character in the excitation energy range of 1.5-2.2 MeV was determined and compared to the predictions of various theoretical calculations. Because of the high statistics gathered in the present experiment the error of the deduced B(E 2) value is dominated by the systematic uncertainties involved in the analysis of Coulomb excitation experiments at beam energies around 150 MeV/u. Therefore, the latter are for the first time assessed in detail in the present work.

show abstract

Section: A the Minimum Impact Parameter (Maximum Scattering Angle) Asupporting

confidence: 68%

Section: A the Minimum Impact Parameter (Maximum Scattering Angle) Amentioning

confidence: 61%

Section: Determination Of Exclusive Scattering Cross Sectionsmentioning

confidence: 99%

See 1 more Smart Citation

In-beam γ -ray spectroscopy of Te136 at relativistic energies

Vaquero¹,

Jungclaus²,

Doornenbal³

et al. 2019

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…Coul. ": experimental values from Coulomb excitation measurements [31]; "DD-PC1": beyond meanfield calculations using the relativistic functional DD-PC1 (this work); "SM,Ni78-I" shell-model calculations from [32]; "(g 9=2 ) P-SU(3)": pseudo-SU(3) limit [32] (or including one N ¼ 50 core-breaking g 9=2 pair promotion, as illustrated by the inset).…”

Section: This Work Literaturementioning

confidence: 99%

Pseudospin Symmetry and Microscopic Origin of Shape Coexistence in the Ni78 Region: A Hint from Lifetime Measurements

Delafosse¹,

Verney²,

Marević³

et al. 2018

Phys. Rev. Lett.

View full text Add to dashboard Cite

Lifetime measurements of excited states of the light N ¼ 52 isotones 88 Kr, 86 Se, and 84 Ge have been performed, using the recoil distance Doppler shift method and VAMOS and AGATA spectrometers for particle identification and gamma spectroscopy, respectively. The reduced electric quadrupole transition probabilities BðE2; 2 þ → 0 þ Þ and BðE2; 4 þ → 2 þ Þ were obtained for the first time for the hard-to-reach 84 Ge. While the BðE2; 2 þ → 0 þ Þ values of 88 Kr, 86 Se saturate the maximum quadrupole collectivity offered by the natural valence (3s, 2d, 1g 7=2 , 1h 11=2) space of an inert 78 Ni core, the value obtained for 84 Ge largely exceeds it, suggesting that shape coexistence phenomena, previously reported at N ≲ 49, extend beyond N ¼ 50. The onset of collectivity at Z ¼ 32 is understood as due to a pseudo-SU(3) organization of the proton single-particle sequence reflecting a clear manifestation of pseudospin symmetry. It is realized that Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

show abstract

“…In the Kr isotopic chain, just four and two protons below Zr and Sr, respectively, a rather gradual onset of collectivity towards N = 60 was concluded from mass measurements [6], Coulomb excitation [7], and fast-timing measurements [8], placing the N = 60 isotone 96 Kr at the low-Z boundary of the region of deformation described above [9]. Present information on the Se and Kr chain is limited to excitation energies out to 94 Se [10], the B(E2 ↑) strength of 86,88 Kr and 86 Se from Coulomb excitation [11], and lifetimes of excited states measured for 84,86 Se [12]. The present work extends the investigation of the quadrupole properties of nuclei in this mass region towards the doubly magic Z = 28, N = 50 shell closures.…”

Section: Introductionmentioning

confidence: 95%