Spin, quadrupole moment, and deformation of the magnetic-rotational band head inPb193 | Zendy

D. L. Balabanski | Zendy; M. Ionescu–Bujor | Zendy; A. Iordăchescu | Zendy; D. Bazzacco | Zendy; F. Brandolini | Zendy; D. Bucurescu | Zendy; S. Chmel | Zendy; M. Danchev | Zendy; M. De Poli | Zendy; G. Georgiev | Zendy; H. Haas | Zendy; H. Hübel | Zendy; N. Mărginean | Zendy; R. Menegazzo | Zendy; G. Neyens | Zendy; P. Pavan | Zendy; C. Rossi Alvarez | Zendy; C. A. Ur | Zendy; K. Vyvey | Zendy; S. Frauendorf | Zendy

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Spin, quadrupole moment, and deformation of the magnetic-rotational band head inPb193

Author(s) -

D. L. Balabanski,

M. Ionescu–Bujor,

A. Iordăchescu,

D. Bazzacco,

F. Brandolini,

D. Bucurescu,

S. Chmel,

M. Danchev,

M. De Poli,

G. Georgiev,

H. Haas,

H. Hübel,

N. Mărginean,

R. Menegazzo,

G. Neyens,

P. Pavan,

C. Rossi Alvarez,

C. A. Ur,

K. Vyvey,

S. Frauendorf

Publication year - 2011

Publication title -

physical review c

Language(s) - English

Resource type - Journals

eISSN - 1089-490X

pISSN - 0556-2813

DOI - 10.1103/physrevc.83.014304

Subject(s) - quadrupole , physics , atomic physics , excitation , magnetic moment , oblate spheroid , spin (aerodynamics) , proton , nuclear magnetic moment , nuclear magnetic resonance , condensed matter physics , spin magnetic moment , electron , nuclear physics , spin polarization , quantum mechanics , thermodynamics

he 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

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