Stegmann, Robert ; Stahl, Christian ; Rainovski, Georgi ; Pietralla, Norbert A. ; Stoyanov, Chavdar ; Carpenter, Michael P. ; Janssens, Robert V. F. ; Lettmann, Marc ; Möller, Th. ; Möller, Oliver ; Werner, Volker ; Zhu, Shaofei (2022)
Identification of the one-quadrupole phonon21,ms+state of 204 Hg.
In: Physics Letters B, 2017, 770
doi: 10.26083/tuprints-00012732
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (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(M1; 2+2 → 2+1 )strength of 0.20 (2)μ2 N indicates that the 2+2 level of ²⁰⁴Hg is at least the main fragment of the 2+1,ms 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: | 2022 |
| Autor(en): | Stegmann, Robert ; Stahl, Christian ; Rainovski, Georgi ; Pietralla, Norbert A. ; Stoyanov, Chavdar ; Carpenter, Michael P. ; Janssens, Robert V. F. ; Lettmann, Marc ; Möller, Th. ; Möller, Oliver ; Werner, Volker ; Zhu, Shaofei |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Identification of the one-quadrupole phonon21,ms+state of 204 Hg |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2017 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 770 |
| DOI: | 10.26083/tuprints-00012732 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/12732 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| Kurzbeschreibung (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(M1; 2+2 → 2+1 )strength of 0.20 (2)μ2 N indicates that the 2+2 level of ²⁰⁴Hg is at least the main fragment of the 2+1,ms 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. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-127327 |
| 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: | 24 Mär 2022 13:21 |
| Letzte Änderung: | 29 Mär 2022 08:57 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Identification of the one-quadrupole phonon21,ms+state of 204 Hg. (deposited 24 Mär 2022 13:21) [Gegenwärtig angezeigt]
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