Spin, quadrupole moment, and deformation of the magnetic-rotational band head in $^{193}\mathrm{Pb}$

Spin, quadrupole moment, and deformation of the magnetic-rotational band head in ${}^{193}{Pb}$

D. L. Balabanski, M. Ionescu-Bujor, A. Iordachescu, D. Bazzacco, F. Brandolini, D. Bucurescu, S. Chmel, M. Danchev, M. De Poli, G. Georgiev, H. Haas, H. Hübel, N. Marginean, R. Menegazzo, G. Neyens, P. Pavan, C. Rossi Alvarez, C. A. Ur, K. Vyvey, and S. Frauendorf

Phys. Rev. C 83, 014304 – Published 18 January 2011

Abstract

The spectroscopic quadrupole moment of the $T_{1 / 2} = 9.4 (5)$ ns isomer in ${}^{193}{Pb}$ at an excitation energy $E_{ex} = (2585 + x)$ keV is measured by the time-differential perturbed angular distribution method as $| Q_{s} | = 2.6 (3)$ $e$ b. Spin and parity $I^{π} = 27 / 2^{-}$ are assigned to it based on angular distribution measurements. This state is the band head of a magnetic-rotational band, described by the $1 i_{13 / 2}$ subshell with the $(3 s_{1 / 2}^{- 2} 1 h_{9 / 2} 1 i_{13 / 2})_{11^{-}}$ proton excitation. The pairing-plus-quadrupole tilted-axis cranking calculations reproduce the measured quadrupole moment with a moderate oblate deformation $ε_{2} = - 0.11$ , similar to that of the $11^{-}$ proton intruder states, which nuclei in the region. This is the first direct measurement of a quadrupole moment and thus of the deformation of a magnetic-rotational band head.

Received 10 August 2009

DOI:https://doi.org/10.1103/PhysRevC.83.014304

Authors & Affiliations

D. L. Balabanski^1,2,*, M. Ionescu-Bujor³, A. Iordachescu³, D. Bazzacco⁴, F. Brandolini⁴, D. Bucurescu³, S. Chmel^5,†, M. Danchev⁶, M. De Poli⁷, G. Georgiev⁸, H. Haas^9,10, H. Hübel⁵, N. Marginean^3,4,7, R. Menegazzo⁴, G. Neyens¹, P. Pavan⁴, C. Rossi Alvarez⁴, C. A. Ur^3,4, K. Vyvey¹, and S. Frauendorf¹¹

¹Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, Belgium
²INRNE, Bulgarian Academy of Sciences, BG-1784 Sofia, Bulgaria
³National Institute for Physics and Nuclear Engineering, R-76900 Bucharest, Romania
⁴Dipartimento di Fisica dell’ Università and INFN, Sezione di Padova, I-35131 Padova, Italy
⁵Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
⁶Faculty of Physics, St. Kliment Ohridski University of Sofia, BG-1164 Sofia, Bulgaria
⁷INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
⁸Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, F-91405 Orsay-Campus, France
⁹Hahn-Meitner Institute, Bereich Festkoperphysik, D-14109 Berlin, Germany
¹⁰EP Division, CERN, CH-1211 Geneva, Switzerland
¹¹Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA

^*Corresponding author: balabanski@inrne.bas.bg.
^†Present address: Fraunhofer INT, D-53879 Euskirchen, Germany.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 83, Iss. 1 — January 2011

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

Spin, quadrupole moment, and deformation of the magnetic-rotational band head in ${}^{193}{Pb}$

D. L. Balabanski, M. Ionescu-Bujor, A. Iordachescu, D. Bazzacco, F. Brandolini, D. Bucurescu, S. Chmel, M. Danchev, M. De Poli, G. Georgiev, H. Haas, H. Hübel, N. Marginean, R. Menegazzo, G. Neyens, P. Pavan, C. Rossi Alvarez, C. A. Ur, K. Vyvey, and S. Frauendorf

Phys. Rev. C 83, 014304 – Published 18 January 2011

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

Spin, quadrupole moment, and deformation of the magnetic-rotational band head in Pb193

D. L. Balabanski, M. Ionescu-Bujor, A. Iordachescu, D. Bazzacco, F. Brandolini, D. Bucurescu, S. Chmel, M. Danchev, M. De Poli, G. Georgiev, H. Haas, H. Hübel, N. Marginean, R. Menegazzo, G. Neyens, P. Pavan, C. Rossi Alvarez, C. A. Ur, K. Vyvey, and S. Frauendorf

Phys. Rev. C 83, 014304 – Published 18 January 2011

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Spin, quadrupole moment, and deformation of the magnetic-rotational band head in ${}^{193}{Pb}$