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

Iskra, Ł.W.  (Institute of Nuclear Physics, PAN, Kraków, 31-342, Poland) ; Broda, R. (Institute of Nuclear Physics, PAN, Kraków, 31-342, Poland) ; Janssens, R.V.F. (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) ; Carpenter, M.P. (Physics Division, Argonne National Laboratory, Argonne, IL, 60439, USA) ; Fornal, B. (Institute of Nuclear Physics, PAN, Kraków, 31-342, Poland) ; Lauritsen, T. (Physics Division, Argonne National Laboratory, Argonne, IL, 60439, USA) ; Otsuka, T. (Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan) ; Togashi, T. (Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan) ; Tsunoda, Y. (Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan) ; Walters, W.B. (Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA) ; Zhu, S. (Physics Division, Argonne National Laboratory, Argonne, IL, 60439, USA)

01 December 2018

Abstract: The B(E3) transition strength from the 1897-keV, 3− level in 96 Zr 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.


Published in: Physics letters B 788 (2019) 396-400
Published by: Elsevier
DOI: 10.1016/j.physletb.2018.10.069
License: CC-BY-3.0



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