Identification of low-energy isovector octupole states in 144Nd

M. Thuerauf*, M. Scheck, C. Bernards, A. Blanc, N. Cooper, G. Defrance, M. Jentschel, J. Jolie, O. Kaleja, U. Koster, T. Kroell, P. Mutti, G. S. Simpson, T. Soldner, M. Tezgell, W. Urban, J. Vanhoy, M. Werner, V. Werner, K. O. Zell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Recently, first candidates for low-lying isovector states in the octupole sector were suggested. The unambiguous identification of those states will contribute to the decomposition of the octupole-octupole residual interaction in an isoscalar and isovector part. This will help us understand the octupole degree of freedom. In 144Nd the 3 state at 2778 keV is a good candidate for such a "mixed-symmetry'' octupole state. In order to clarify the nature of this state, a 143Nd(n, γ)-experiment was conducted with the EXILL-setup. Following neutron capture the 3 states are populated and EXILL provides the opportunity to determine the multipole-mixing ratios of the 3i →31 - transitions. For the transition from the "mixed-symmetry" octupole state to the symmetric 31 state we expect a strong M1 component.
Original languageEnglish
Number of pages6
JournalJournal of Physics: Conference Series
Volume724
Issue number1
DOIs
Publication statusPublished - 30 Jun 2016

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