Neutron effective single-particle energies above 
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: A hint from lifetime measurements in the 
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 isotones 
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Didierjean, F.; Verney, D.; Duchêne, G.; Litzinger, J.; Sieja, K.; Dewald, Α.; Goasduff, A.; Lozeva, R.; Fransen, C.; Angelis, G. de; Aydin, S.; Bazzacco, D.; Bracco, A.; Bottoni, S.; Corradi, L.; Crespi, F. C. L.; Ellinger, Enrico; Farnea, E.; Fioretto, E.; Franchoo, S.; Gottardo, A.; Grocutt, L.; Hackstein, M.; Ibrahim, F.; Kolos, K.; Leoni, S.; Lenzi, S. M.; Lunardi, S.; Menegazzo, R.; Mengoni, D.; Michelagnoli, C.; Mijatović, T.; Modamio, V.; Möller, O.; Montagnoli, G.; Montanari, D.; Morales, A. I.; Napoli, D. R.; Nııkura, M.; Recchia, F.; Şahin, E.; Scarlassara, F.; Sengele, L.; Szilner, S.; Smith, J. F.; Stefanini, A. M.; Ur, C. A.; Valiente-Dobón, J. J.; Vandone, V.

doi:10.1103/physrevc.96.044320

Cited by 5 publications

(3 citation statements)

References 42 publications

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“…Variants of the RDDS technique suitable for lowstatistics, low D-number cases developed in Refs. [25,26] were adopted for the present analysis. Seven, five, and two transitions in 88 Kr, 86 Se, and 84 Ge, already identified in Refs.…”

mentioning

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.

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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.

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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.

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“…The lifetime extraction procedure is described in Refs. [12,20]. We measured the ratio R = I U I U +I S (I U and I S are the integral of the unshifted and shifted components of the peak, respectively) for all the distances (when statistics allows).…”

Section: Lifetime Resultsmentioning

confidence: 99%

“…In this case, we use the technique used in Ref. [20]. It was used, for example, to determined the lifetimes of the higher energy states in 88 Kr.…”

Section: Lifetime Resultsmentioning

confidence: 99%

Lifetime Measurements Using RDDS Method in the Vicinity of $^{78}$Ni

Delafosse¹,

Verney²,

Gottardo³

et al. 2019

Acta Phys. Pol. B

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Gamma spectroscopy with AGATA in its first phases: New insights in nuclear excitations along the nuclear chart

Bracco

Duchêne

Podolyák

et al. 2021

Progress in Particle and Nuclear Physics

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The Advanced GAmma Tracking Array (AGATA), the new generation high-resolution γray spectrometer, has seen the realization of the first phases of its construction and exploitation. A number of nuclear structure studies based on experiments utilizing the principle of γ -ray tracking were carried out in this decade. The combination of highest detection efficiency and position sensitivity allowed very selective spectroscopic studies with stable beams and the use of instable ion beams with the lowest intensities. Nuclear-structure studies commenced already at INFN-LNL (Legnaro, Italy) with a first implementation of the array consisting of five AGATA modules. A larger array of AGATA modules was used at GSI (Darmstadt, Germany) for experiments with unstable ion beams at relativistic energies. The spectrometer was then mounted in a beam line at GANIL (Caen, France). This review discusses several of the obtained results, underlying the progress made and future perspectives. The performed experiments give insights into nuclear structure issues which are connected to single particles, collective degrees of freedom, nucleon interactions and symmetries. Most of the investigated nuclei are located outside the stability line and for stable nuclei the investigations concern unexplored configurations. Altogether the obtained results represent advances which could test theory in exclusive way and motivate new theoretical developments.Opportunities for further γ -ray spectroscopy with the foreseen more advanced phase of the AGATA emerge in the discussions of the presented data.

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Neutron effective single-particle energies above Ni78 : A hint from lifetime measurements in the N=51 isotones

Cited by 5 publications

References 42 publications

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

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

Lifetime Measurements Using RDDS Method in the Vicinity of $^{78}$Ni

Gamma spectroscopy with AGATA in its first phases: New insights in nuclear excitations along the nuclear chart

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