Intermediate structures in 12C(16O, 12C[2+])16O studied with the γ-ray recoil method

H. Fujita, M. Hijiya, Y. Inotani, T. Mukae, K. Koga, M. Koga, F. Nakamura, S. Koto, T. Sugimitsu, N. Ikeda, S. Morinobu, Y. Sugiyama, Y. Tomita, H. Ikezoe, Y. Yamanouti, K. Ideno, S. Hamada, T. Ikuta

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Abstract

The intermediate structures in 12C+ 16O inelastic scattering were investigated at energies around Ec.m. = 30 MeV in the 12C(2+)+16O(g.s.) single excitation and the 12C(2+)+16O(3-,02+ ) mutual excitation channels and at Ec.m. = 22.6 MeV in the 12C(2+) + 16O(g.s.) single excitation channel. The angular distributions of the magnetic substate cross sections for the 2+ (4.439 MeV) state of 12C were measured by using the γ-ray recoil method in the center-of-mass ejectile-axis frame. It is shown that the structures at Ec.m. = 29.8 and 31.8 MeV in the 12C(2+)+16O(g.s.) channel are interpreted as resonances of Jπ = 16+ or 17- which decay dominantly through the aligned configurations with L = J-2. On the other hand, the structure at Ec.m. = 22.6 MeV is accounted for by assuming the overlap of two resonances having spins and parities of Jπ = 12+ and Jπ = 16+. In the 12C(2+)+16O(3-,02+ ) channel, little oscillatory structures are observed in the m-substate angular distributions so that the resonance spins cannot be extracted.

Original languageEnglish
Article number024609
Pages (from-to)246091-2460914
Number of pages2214824
JournalPhysical Review C - Nuclear Physics
Volume66
Issue number2
DOIs
Publication statusPublished - Aug 1 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Fujita, H., Hijiya, M., Inotani, Y., Mukae, T., Koga, K., Koga, M., Nakamura, F., Koto, S., Sugimitsu, T., Ikeda, N., Morinobu, S., Sugiyama, Y., Tomita, Y., Ikezoe, H., Yamanouti, Y., Ideno, K., Hamada, S., & Ikuta, T. (2002). Intermediate structures in 12C(16O, 12C[2+])16O studied with the γ-ray recoil method. Physical Review C - Nuclear Physics, 66(2), 246091-2460914. [024609]. https://doi.org/10.1103/PhysRevC.66.024609