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Quadrupole moments of odd-A ⁵³⁻⁶³Mn: Onset of collectivity towards N = 40

Babcock, Carla ; Heylen, Hanne ; Bissell, Mark L. ; Blaum, Klaus ; Campbell, Paul ; Cheal, Bradley ; Fedorov, D.V. ; Garcia Ruiz, Ronald Fernando ; Geithner, Wolfgang ; Gins, Wouter ; Day Goodacre, Thomas ; Grob, L.K. ; Kowalska, Magdalena A. ; Lenzi, Silvia Monica ; Maass, Bernhard ; Malbrunot-Ettenauer, S. ; Marsh, Bruce Allan ; Neugart, Rainer ; Neyens, Gerda ; Nörtershäuser, Wilfried ; Otsuka, Takaharu ; Rossel, Ralf Erik ; Rothe, Sebastian ; Sánchez, Rodolfo M. ; Tsunoda, Yusuke ; Wraith, Calvin ; Xie, Liang ; Yang, Xiaofei (2016)
Quadrupole moments of odd-A ⁵³⁻⁶³Mn: Onset of collectivity towards N = 40.
In: Physics Letters B, 760
doi: 10.1016/j.physletb.2016.07.016
Artikel, Bibliographie

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Kurzbeschreibung (Abstract)

The spectroscopic quadrupole moments of the odd–even Mn isotopes between N=28 and N=38 have been measured using bunched-beam collinear laser spectroscopy at ISOLDE, CERN. In order to increase sensitivity to the quadrupole interaction, the measurements have been done using a transition in the ion rather than in the atom, with the additional advantage of better spectroscopic efficiency. Since the chosen transition is from a metastable state, optical pumping in ISOLDE’s cooler and buncher (ISCOOL) was used to populate this state. The extracted quadrupole moments are compared to large-scale shell model predictions using three effective interactions, GXPF1A, LNPS and modified A3DA. The inclusion of both the 1νg9/2and 2νd5/2orbitals in the model space is shown to be necessary to reproduce the observed increase in the quadrupole deformation from N=36 onwards. Specifically, the inclusion of the 2νd5/2orbital induces an increase in neutron and proton excitations across the reduced gaps at N=40and Z=28, leading to an increase in deformation above N=36.

Typ des Eintrags: Artikel
Erschienen: 2016
Autor(en): Babcock, Carla ; Heylen, Hanne ; Bissell, Mark L. ; Blaum, Klaus ; Campbell, Paul ; Cheal, Bradley ; Fedorov, D.V. ; Garcia Ruiz, Ronald Fernando ; Geithner, Wolfgang ; Gins, Wouter ; Day Goodacre, Thomas ; Grob, L.K. ; Kowalska, Magdalena A. ; Lenzi, Silvia Monica ; Maass, Bernhard ; Malbrunot-Ettenauer, S. ; Marsh, Bruce Allan ; Neugart, Rainer ; Neyens, Gerda ; Nörtershäuser, Wilfried ; Otsuka, Takaharu ; Rossel, Ralf Erik ; Rothe, Sebastian ; Sánchez, Rodolfo M. ; Tsunoda, Yusuke ; Wraith, Calvin ; Xie, Liang ; Yang, Xiaofei
Art des Eintrags: Bibliographie
Titel: Quadrupole moments of odd-A ⁵³⁻⁶³Mn: Onset of collectivity towards N = 40
Sprache: Englisch
Publikationsjahr: 2016
Ort: Darmstadt
Verlag: Elsevier
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Physics Letters B
Jahrgang/Volume einer Zeitschrift: 760
DOI: 10.1016/j.physletb.2016.07.016
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Kurzbeschreibung (Abstract):

The spectroscopic quadrupole moments of the odd–even Mn isotopes between N=28 and N=38 have been measured using bunched-beam collinear laser spectroscopy at ISOLDE, CERN. In order to increase sensitivity to the quadrupole interaction, the measurements have been done using a transition in the ion rather than in the atom, with the additional advantage of better spectroscopic efficiency. Since the chosen transition is from a metastable state, optical pumping in ISOLDE’s cooler and buncher (ISCOOL) was used to populate this state. The extracted quadrupole moments are compared to large-scale shell model predictions using three effective interactions, GXPF1A, LNPS and modified A3DA. The inclusion of both the 1νg9/2and 2νd5/2orbitals in the model space is shown to be necessary to reproduce the observed increase in the quadrupole deformation from N=36 onwards. Specifically, the inclusion of the 2νd5/2orbital induces an increase in neutron and proton excitations across the reduced gaps at N=40and Z=28, leading to an increase in deformation above N=36.

Zusätzliche Informationen:

Keywords: Quadrupole moments; Laser spectroscopy; Manganese; Deformation; Optical pumping

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: 10 Apr 2024 10:27
Letzte Änderung: 10 Apr 2024 10:27
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