Revised B(E3) transition rate and structure of the 3− level in 96Zr

Ł.W. Iskra; R. Broda; R.V.F. Janssens; M.P. Carpenter; B. Fornal; T. Lauritsen; T. Otsuka; T. Togashi; Y. Tsunoda; W.B. Walters; S. Zhu

Physics Letters B (Jan 2019)

Revised B(E3) transition rate and structure of the 3− level in 96Zr

Ł.W. Iskra,
R. Broda,
R.V.F. Janssens,
M.P. Carpenter,
B. Fornal,
T. Lauritsen,
T. Otsuka,
T. Togashi,
Y. Tsunoda,
W.B. Walters,
S. Zhu

Affiliations

Ł.W. Iskra: Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland; Corresponding author at: Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland.
R. Broda: Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
R.V.F. Janssens: Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA; Triangle Universities Nuclear Laboratory, Duke University, Durham, NC 27708, USA; Corresponding author at: Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
M.P. Carpenter: Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
B. Fornal: Institute of Nuclear Physics, PAN, 31-342 Kraków, Poland
T. Lauritsen: Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
T. Otsuka: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
T. Togashi: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
Y. Tsunoda: Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
W.B. Walters: Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
S. Zhu: Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA

Journal volume & issue: Vol. 788
pp. 396 – 400

Abstract

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The B(E3) transition strength from the 1897-keV, 3− level in 96Zr has been reevaluated from six high-statistics, independent data sets. The measured value of 42(3) W.u. is significantly lower than that adopted in recent compilations. It is, however, in line with the global systematics of collective B(E3) rates found throughout the periodic table. Thus, the “exceptional” character of this transition, that challenged theory, no longer applies. Monte Carlo shell-model calculations indicate that the collectivity of the octupole vibration arises from both proton and neutron excitations involving a large number of orbitals. Keywords: 90≤A≤149, 3− level, Octupole excitation, Lifetimes and branching ratios, B(E3) strength, Monte Carlo shell model calculations

Published in Physics Letters B

ISSN: 0370-2693 (Print); 1873-2445 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/physics-letters-b/

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