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
Artikel, Zweitveröffentlichung, Verlagsversion
Es ist eine neuere Version dieses Eintrags verfügbar. |
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: | 2024 |
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: | Zweitveröffentlichung |
Titel: | Signatures for a nuclear quantum phase transition from E0 and E2 observables in Gd isotopes |
Sprache: | Englisch |
Publikationsjahr: | 28 Mai 2024 |
Ort: | Darmstadt |
Publikationsdatum der Erstveröffentlichung: | 2018 |
Ort der Erstveröffentlichung: | Bristol |
Verlag: | IOP Publishing |
Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics: Conference Series |
Jahrgang/Volume einer Zeitschrift: | 1023 |
Kollation: | 7 Seiten |
DOI: | 10.26083/tuprints-00021056 |
URL / URN: | https://tuprints.ulb.tu-darmstadt.de/21056 |
Zugehörige Links: | |
Herkunft: | Zweitveröffentlichung DeepGreen |
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 |
Status: | Verlagsversion |
URN: | urn:nbn:de:tuda-tuprints-210568 |
Zusätzliche Informationen: | XXII 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: | 28 Mai 2024 09:58 |
Letzte Änderung: | 20 Jun 2024 11:51 |
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