Wiederhold, J. ; Kern, R. ; Lizarazo, C. ; Pietralla, N. ; Werner, V. ; Jolos, R.V. ; Bucurescu, D. ; Florea, N. ; Ghita, D. ; Glodariu, T. ; Lica, R. ; Marginean, N. ; Marginean, R. ; Mihai, C. ; Mihai, R. ; Mitu, I.O. ; Negret, A. ; Nita, C. ; Olacel, A. ; Pascu, S. ; Stroe, L. ; Toma, S. ; Turturica, A. (2024)
Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes.
In: Journal of Physics: Conference Series, 2018, 1023
doi: 10.26083/tuprints-00021056
Article, Secondary publication, Publisher's Version
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Item Type: | Article |
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Type of entry: | Secondary publication |
Title: | Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes |
Language: | English |
Date: | 28 May 2024 |
Place of Publication: | Darmstadt |
Year of primary publication: | 2018 |
Place of primary publication: | Bristol |
Publisher: | IOP Publishing |
Journal or Publication Title: | Journal of Physics: Conference Series |
Volume of the journal: | 1023 |
Collation: | 7 Seiten |
DOI: | 10.26083/tuprints-00021056 |
Corresponding Links: | |
Origin: | Secondary publication DeepGreen |
Abstract: | Nuclei are complex quantum objects due to complex nucleon-nucleon interactions. They can undergo rather rapid changes in structure as a function of nucleon number. A well known region of such a shape transition is the rare-earth region around N = 90, where accessible nuclei range from spherical nuclei at the closed neutron shell at N = 82 to deformed nuclei. For a better understanding of this phenomenon, it is of interest to study empirical signatures like the E2 transition strength B(E2;2₁⁺→0₁⁺) or the E0 excitation strength ρ²(E0;0₁⁺→0₂⁺). The nuclide ¹⁵²Gd with 88 neutrons is located close to the quantum phase transition at N = 90. The lifetime τ(0₂⁺) of ¹⁵²Gd has been measured using fast electronic scintillation timing (FEST) with an array of HPGe- and LaBr₃- detectors. Excited states of ¹⁵²Gd were populated via an (α,n)-reaction on a gold-backed ¹⁴⁹Sm target. The measured lifetime of τ(0₂⁺)=96(6)ps corresponds to a reduced transition strength of B(E2;0₂⁺→2₁⁺)=111(7) W.u. and an E0 transition strength of ρ²(E0) = 39(3) · 10⁻³ to the ground state. This result provides experimental support for the validity of a correlation between E0 and E2 strengths that is a novel indicator for a quantum phase transition. This work was published as J. Wiederhold et al., Phys. Rev. C 94, 044302 (2016). |
Identification Number: | Artikel-ID: 012024 |
Status: | Publisher's Version |
URN: | urn:nbn:de:tuda-tuprints-210568 |
Additional Information: | XXII International School on Nuclear Physics, Neutron Physics and Applications 10–16 September 2017, Varna, Bulgaria |
Classification DDC: | 500 Science and mathematics > 530 Physics |
Divisions: | 05 Department of Physics > Institute of Nuclear Physics |
Date Deposited: | 28 May 2024 09:58 |
Last Modified: | 14 Aug 2024 05:59 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/21056 |
PPN: | 520609905 |
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