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Intruder configurations in the ground state of 30Ne

Liu, HN, Lee, J, Doornenbal, P, Scheit, H, Takeuchi, S, Aoi, N, Li, KA, Matsushita, M, Steppenbeck, D, Wang, Handing , Baba, H, Ideguchi, E, Kobayashi, N, Kondo, Y, Lee, G, Michimasa, S, Motobayashi, T, Poves, A, Sakurai, H, Takechi, M, Togano, Y, Tostevin, Jeffrey and Utsuno, Y (2017) Intruder configurations in the ground state of 30Ne Physics Letters Section B: Nuclear, Elementary Particle and High-Energy Physics, 767. pp. 58-62.

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We report on the first detailed study of intruder configurations in the ground state of 30Ne by means of the 12C(30Ne,29Ne+γ)X one-neutron knockout reaction at 228 MeV/nucleon. Using a combined analysis of individual parallel momentum distributions and partial cross sections we find: (a) comparable p- and d-wave removal strength to 29Ne final states with excitation energies below 200 keV, and (b) significant p-wave removal strength to the 620 keV state of 29Ne, and (c) no evidence for f-wave intruder strength leading to bound 29Ne final states. The SDPF-U-MIX shell model calculation in the sd-pf model space provides a better overall agreement with the measured energy levels of 29Ne and the fp-intruder amplitudes in 30Ne than the SDPF-M prediction, suggesting that the refinement of the sd-pf cross shell interaction and extension of the model space to include the 2p1/2 and 1f5/2 levels are important for understanding the island of inversion.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Liu, HN
Lee, J
Doornenbal, P
Scheit, H
Takeuchi, S
Aoi, N
Li, KA
Matsushita, M
Steppenbeck, D
Baba, H
Ideguchi, E
Kobayashi, N
Kondo, Y
Lee, G
Michimasa, S
Motobayashi, T
Poves, A
Sakurai, H
Takechi, M
Togano, Y
Utsuno, Y
Date : 27 January 2017
DOI : 10.1016/j.physletb.2017.01.052
Copyright Disclaimer : © 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (
Uncontrolled Keywords : Intruder configurations, One-neutron knockout reactions 12C(30Ne,29Ne+γ)X
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 26 Jan 2017 10:49
Last Modified : 16 Jan 2019 17:11

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