Strong M1 components in 3i-→31- Transitions in nearly spherical nuclei: Evidence for isovector-octupole excitations

M. Scheck, P. A. Butler, C. Fransen, V. Werner, S. W. Yates

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13 Scopus citations

Abstract

An evaluation of data obtained in (n,nγ) experiments reveals strong M1 3i-→31- transitions in nuclei near the N=50 (Zr92, Mo94, and Mo96), Z=50 (Cd112 and Cd114), and N=82 (Nd144) shell closures. The observed 31-||M1||3i-matrix elements scale with the 21+||M1||2ms+matrix elements connecting the mixed-symmetric and symmetric quadrupole excitations. In accordance with a picture of a mixed two-component quantum system, the energy difference between the initial 3i- state and the 31- octupole phonon is proportional to the |31-||E3||0gs+|matrix element. The possibility of assigning the 3- states of interest as octupole isovector states is discussed.

Original languageEnglish
Article number064305
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number6
DOIs
StatePublished - Jun 4 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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