Neutron occupancy of 0 d 5/2 orbital in 24O

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

Research output: Contribution to journalConference articlepeer-review


The partial one-neutron removal cross section of 24O leading to the first excited state in 23O has been measured to be 65.7 ± 5.3 mb with a proton target in inverse kinematics at the beam energy of 62 MeV/nucleon. The decay energy spectrum of the neutron unbound state of 23O was reconstructed from the measured four momenta of 22O and the emitted neutron. A sharp peak was observed at E decay = 48 ± 3 keV, confirming the previous measurements. The measured partial longitudinal momentum distribution of 23O * showed the d-wave knockout character, providing a support for the Jπ assignment of 5/2+ for this state. The spectroscopic factor for the neutrons in 0d5/2 orbital was deduced, for the first time, to be C2S(0d5/2) = 3.7 ± 0.3 (preliminary) by comparing with the result of Glauber model. The relatively large spectroscopic factor supports the N = 16 shell closure in the neutron drip-line nucleus 24O.

Original languageEnglish
Article number02103
JournalEPJ Web of Conferences
Publication statusPublished - 2014
Event2013 International Nuclear Physics Conference, INPC 2013 - Firenze, Italy
Duration: 2013 Jun 22013 Jun 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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