The N = 16 Spherical Shell Closure in 24O

K. Tshoo, Y. Satou, H. Bhang, S. Choi, T. Nakamura, S. Deguchi, Y. Kawada, Y. Kondo, N. Kobayashi, Y. Nakayama, K. N. Tanaka, N. Tanaka, N. Aoi, M. Ishihara, T. Motobayashi, H. Otsu, H. Sakurai, S. Takeuchi, Y. Togano, K. YonedaZ. H. Li, F. Delaunay, J. Gibelin, F. M. Marques, N. A. Orr, T. Honda, M. Matsushita, T. Kobayashi, Y. Miyashita, T. Sumikama, K. Yoshinaga, S. Shimoura, D. Sohler, T. Zheng, Z. X. Cao

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Abstract

The unbound excited states of the most neutron-rich dripline oxygen isotope, 24O, have been investigated by using the 24O(p,p′)24O&z. ast; reaction at the beam energy of 62 MeV/nucleon in inverse kinematics. The first and second unbound excited states of 24O have been observed at Ex =4.63-0.140.30 MeV and Ex =4.63-0.190.24 MeV (preliminary) along with the evidence for another higher lying state at around 7. 3 MeV. The quadrupole deformation parameter β2+ was deduced to be Ex =4.63-0.140.30 (preliminary) for the first time. The systematics of the β2+ and the Ex 21+ in the Z = 8 isotopes shows the N = 16 spherical shell closure in 24O.

Original languageEnglish
Pages (from-to)459-463
Number of pages5
JournalFew-Body Systems
Volume54
Issue number1-4
DOIs
Publication statusPublished - Jan 1 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Tshoo, K., Satou, Y., Bhang, H., Choi, S., Nakamura, T., Deguchi, S., Kawada, Y., Kondo, Y., Kobayashi, N., Nakayama, Y., Tanaka, K. N., Tanaka, N., Aoi, N., Ishihara, M., Motobayashi, T., Otsu, H., Sakurai, H., Takeuchi, S., Togano, Y., ... Cao, Z. X. (2013). The N = 16 Spherical Shell Closure in 24O. Few-Body Systems, 54(1-4), 459-463. https://doi.org/10.1007/s00601-012-0413-3