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. (2018)
Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes.
In: Journal of Physics: Conference Series, 1023
doi: 10.1088/1742-6596/1023/1/012024
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (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).
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2018 |
| Autor(en): | 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. |
| Art des Eintrags: | Bibliographie |
| Titel: | Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes |
| Sprache: | Englisch |
| Publikationsjahr: | 2018 |
| Ort: | Bristol |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics: Conference Series |
| Jahrgang/Volume einer Zeitschrift: | 1023 |
| Kollation: | 7 Seiten |
| DOI: | 10.1088/1742-6596/1023/1/012024 |
| Zugehörige Links: | |
| Kurzbeschreibung (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). |
| ID-Nummer: | Artikel-ID: 012024 |
| Zusätzliche Informationen: | Erstveröffentlichung; 22nd International School on Nuclear Physics, Neutron Physics and Applications 10.-16. September 2017, Varna, Bulgaria |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 20 Jun 2024 11:51 |
| Letzte Änderung: | 20 Jun 2024 11:52 |
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| Suche nach Titel in: | TUfind oder in Google |
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Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes. (deposited 28 Mai 2024 09:58)
- Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes. (deposited 20 Jun 2024 11:51) [Gegenwärtig angezeigt]
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