Stegmann, R. ; Stahl, C. ; Rainovski, G. ; Pietralla, N. ; Stoyanov, C. ; Carpenter, M. P. ; Janssens, R. V. F. ; Lettmann, M. ; Möller, T. ; Möller, O. ; Werner, V. ; Zhu, S. (2017)
Identification of the one-quadrupole phonon21,ms+state of 204 Hg.
In: Physics Letters B, 770
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Abstract One-phonon states of vibrational nuclei with mixed proton–neutron symmetry have been observed throughout the nuclear chart besides the mass A ≈ 200 region. Very recently, it has been proposed that the 2 2 + state of 212Po is of isovector nature. This nucleus has two valence protons and two valence neutrons outside the doubly-magic 208Pb nucleus. The stable isotope 204Hg, featuring two valence-proton and valence-neutron holes, with respect to 208Pb, is the particle-hole mirror of 212Po. In order to compare the properties of low-lying isovector excitations in these particle-hole mirror nuclei, we have studied 204Hg by using the projectile Coulomb-excitation technique. The measured absolute B ( M 1 ; 2 2 + → 2 1 + ) strength of 0.20 ( 2 ) μ N 2 indicates that the 2 2 + level of 204Hg is at least the main fragment of the 2 1 , m s + state. For the first time in this mass region, both lowest-lying, one-quadrupole phonon excitations are established together with the complete set of their decay strengths. This allows for a microscopic description of their structures, achieved in the framework of the Quasi-particle Phonon Model.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Stegmann, R. ; Stahl, C. ; Rainovski, G. ; Pietralla, N. ; Stoyanov, C. ; Carpenter, M. P. ; Janssens, R. V. F. ; Lettmann, M. ; Möller, T. ; Möller, O. ; Werner, V. ; Zhu, S. |
| Art des Eintrags: | Bibliographie |
| Titel: | Identification of the one-quadrupole phonon21,ms+state of 204 Hg |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 770 |
| URL / URN: | http://www.sciencedirect.com/science/article/pii/S0370269317... |
| Kurzbeschreibung (Abstract): | Abstract One-phonon states of vibrational nuclei with mixed proton–neutron symmetry have been observed throughout the nuclear chart besides the mass A ≈ 200 region. Very recently, it has been proposed that the 2 2 + state of 212Po is of isovector nature. This nucleus has two valence protons and two valence neutrons outside the doubly-magic 208Pb nucleus. The stable isotope 204Hg, featuring two valence-proton and valence-neutron holes, with respect to 208Pb, is the particle-hole mirror of 212Po. In order to compare the properties of low-lying isovector excitations in these particle-hole mirror nuclei, we have studied 204Hg by using the projectile Coulomb-excitation technique. The measured absolute B ( M 1 ; 2 2 + → 2 1 + ) strength of 0.20 ( 2 ) μ N 2 indicates that the 2 2 + level of 204Hg is at least the main fragment of the 2 1 , m s + state. For the first time in this mass region, both lowest-lying, one-quadrupole phonon excitations are established together with the complete set of their decay strengths. This allows for a microscopic description of their structures, achieved in the framework of the Quasi-particle Phonon Model. |
| Freie Schlagworte: | Shell structure |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 05 Mai 2017 10:44 |
| Letzte Änderung: | 09 Nov 2023 07:54 |
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