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

doi:10.1103/PhysRevC.66.024609

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 E_c.m. = 30 MeV in the ¹²C(2⁺)+¹⁶O(g.s.) single excitation and the ¹²C(2⁺)+¹⁶O(3^-,0₂⁺) mutual excitation channels and at E_c.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 E_c.m. = 29.8 and 31.8 MeV in the ¹²C(2⁺)+¹⁶O(g.s.) channel are interpreted as resonances of J^π = 16⁺ or 17^- which decay dominantly through the aligned configurations with L = J-2. On the other hand, the structure at E_c.m. = 22.6 MeV is accounted for by assuming the overlap of two resonances having spins and parities of J^π = 12⁺ and J^π = 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 language	English
Article number	024609
Pages (from-to)	246091-2460914
Number of pages	2214824
Journal	Physical Review C - Nuclear Physics
Volume	66
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.66.024609
Publication status	Published - Aug 1 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.66.024609

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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

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, vol. 66, no. 2, 024609, pp. 246091-2460914. https://doi.org/10.1103/PhysRevC.66.024609

@article{e60b71b6ab9647a1a47a314115aa5783,

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

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.",

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

year = "2002",

month = aug,

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doi = "10.1103/PhysRevC.66.024609",

language = "English",

volume = "66",

pages = "246091--2460914",

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TY - JOUR

T1 - Intermediate structures in 12C(16O, 12C[2+])16O studied with the γ-ray recoil method

AU - Fujita, H.

AU - Hijiya, M.

AU - Inotani, Y.

AU - Mukae, T.

AU - Koga, K.

AU - Koga, M.

AU - Nakamura, F.

AU - Koto, S.

AU - Sugimitsu, T.

AU - Ikeda, N.

AU - Morinobu, S.

AU - Sugiyama, Y.

AU - Tomita, Y.

AU - Ikezoe, H.

AU - Yamanouti, Y.

AU - Ideno, K.

AU - Hamada, S.

AU - Ikuta, T.

PY - 2002/8/1

Y1 - 2002/8/1

N2 - 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.

AB - 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.

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JF - Physical Review C - Nuclear Physics

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ER -

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

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