Title: Spin, quadrupole moment, and deformation of the magnetic-rotational band head in Pb-193
Authors: Balabanski, D. L ×
Ionescu-Bujor, M
Iordachescu, A
Bazzacco, D
Brandolini, F
Bucurescu, D
Chmel, S
Danchev, M
De Poli, M
Georgiev, G
Haas, H
Huebel, H
Marginean, N
Menegazzo, R
Neyens, Gerda
Pavan, P
Alvarez, C. Rossi
Ur, C. A
Vyvey, Katrien
Frauendorf, S #
Issue Date: Jan-2011
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review C, Nuclear Physics vol:83 issue:1 pages:-
Article number: 014304
Abstract: The spectroscopic quadrupole moment of the T-1/2 = 9.4(5) ns isomer in Pb-193 at an excitation energy E-ex = (2585 + x) keV is measured by the time-differential perturbed angular distribution method as vertical bar Q(s)vertical bar = 2.6(3) e b. Spin and parity I-pi = 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 coupling of a neutron hole in the 1i(13/2) subshell with the (3s(1/2)(-2)1h(9/2)1i(13/2))(11-) proton excitation. The pairing-plus-quadrupole tilted-axis cranking calculations reproduce the measured quadrupole moment with a moderate oblate deformation epsilon(2) = -0.11, similar to that of the 11(-)proton intruder states, which occur in the even-even Pb 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.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
PRC83-014304-193Pb.pdf Published 345KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science