Identification of low-energy isovector octupole states in 144Nd. (June 2016)

• Record Type: Journal Article
• Authors: Thürauf, M; Scheck, M; Bernards, C; Blanc, A; Cooper, N; Defrance, G; Jentschel, M; Jolie, J; Kaleja, O; Köster, U; Kröll, T; Mutti, P; Simpson, G S; Soldner, T; Tezgel, M; Urban, W; Vanhoy, J; Werner, M; Werner, V; Zell, K O
• Is Part Of: Journal of physics. Volume 724(2016)
• Publication Date: 2016-06
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/724/1/012050
• Languages: English
• ISSNs: 1742-6588

Abstract

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 144 Nd 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 143 Nd(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 M 1 component.