One-neutron removal reactions of C18 and C19 on a proton target

Y. Kondo, T. Nakamura, Y. Satou, T. Matsumoto, N. Aoi, N. Endo, N. Fukuda, T. Gomi, Y. Hashimoto, M. Ishihara, S. Kawai, M. Kitayama, T. Kobayashi, Y. Matsuda, N. Matsui, T. Motobayashi, T. Nakabayashi, K. Ogata, T. Okumura, H. J. OngT. K. Onishi, H. Otsu, H. Sakurai, S. Shimoura, M. Shinohara, T. Sugimoto, S. Takeuchi, M. Tamaki, Y. Togano, Y. Yanagisawa

研究成果: ジャーナルへの寄稿記事

31 引用 (Scopus)

抄録

We have studied the one-neutron removal reactions of C18 at 81 MeV/nucleon and C19 at 68 MeV/nucleon on a liquid hydrogen target. Transverse-momentum distributions of the core fragments C17 and C18, and their partial cross sections, are measured using coincidences with the γ rays. These are compared to theoretical calculations based on the continuum-discretized coupled-channels (CDCC) method. We have found that the transverse-momentum distributions of C17 are well described by the CDCC calculations, and the agreement provides evidence for the spin-parity assignments of Jπ=1/2+ for the 0.21-MeV state and Jπ=5/2+ for the 0.33-MeV state in C17. The Jπ=(2,3)+ assignment for the 4.0-MeV state in C18 is obtained for the first time based on the momentum distribution of C18. The measured partial cross sections are consistent with the CDCC calculations combined with shell-model spectroscopic factors. The present study demonstrates that the transverse-momentum distribution obtained in a one-neutron removal reaction on a proton target is as useful as the conventional longitudinal-momentum distribution measured with the heavier Be or C targets for determining the orbital angular momentum of a removed neutron.

元の言語英語
記事番号014602
ジャーナルPhysical Review C - Nuclear Physics
79
発行部数1
DOI
出版物ステータス出版済み - 1 5 2009
外部発表Yes

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neutrons
protons
transverse momentum
continuums
momentum
liquid hydrogen
cross sections
rays
parity
angular momentum
fragments
orbitals

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

これを引用

One-neutron removal reactions of C18 and C19 on a proton target. / Kondo, Y.; Nakamura, T.; Satou, Y.; Matsumoto, T.; Aoi, N.; Endo, N.; Fukuda, N.; Gomi, T.; Hashimoto, Y.; Ishihara, M.; Kawai, S.; Kitayama, M.; Kobayashi, T.; Matsuda, Y.; Matsui, N.; Motobayashi, T.; Nakabayashi, T.; Ogata, K.; Okumura, T.; Ong, H. J.; Onishi, T. K.; Otsu, H.; Sakurai, H.; Shimoura, S.; Shinohara, M.; Sugimoto, T.; Takeuchi, S.; Tamaki, M.; Togano, Y.; Yanagisawa, Y.

:: Physical Review C - Nuclear Physics, 巻 79, 番号 1, 014602, 05.01.2009.

研究成果: ジャーナルへの寄稿記事

Kondo, Y, Nakamura, T, Satou, Y, Matsumoto, T, Aoi, N, Endo, N, Fukuda, N, Gomi, T, Hashimoto, Y, Ishihara, M, Kawai, S, Kitayama, M, Kobayashi, T, Matsuda, Y, Matsui, N, Motobayashi, T, Nakabayashi, T, Ogata, K, Okumura, T, Ong, HJ, Onishi, TK, Otsu, H, Sakurai, H, Shimoura, S, Shinohara, M, Sugimoto, T, Takeuchi, S, Tamaki, M, Togano, Y & Yanagisawa, Y 2009, 'One-neutron removal reactions of C18 and C19 on a proton target', Physical Review C - Nuclear Physics, 巻. 79, 番号 1, 014602. https://doi.org/10.1103/PhysRevC.79.014602
Kondo, Y. ; Nakamura, T. ; Satou, Y. ; Matsumoto, T. ; Aoi, N. ; Endo, N. ; Fukuda, N. ; Gomi, T. ; Hashimoto, Y. ; Ishihara, M. ; Kawai, S. ; Kitayama, M. ; Kobayashi, T. ; Matsuda, Y. ; Matsui, N. ; Motobayashi, T. ; Nakabayashi, T. ; Ogata, K. ; Okumura, T. ; Ong, H. J. ; Onishi, T. K. ; Otsu, H. ; Sakurai, H. ; Shimoura, S. ; Shinohara, M. ; Sugimoto, T. ; Takeuchi, S. ; Tamaki, M. ; Togano, Y. ; Yanagisawa, Y. / One-neutron removal reactions of C18 and C19 on a proton target. :: Physical Review C - Nuclear Physics. 2009 ; 巻 79, 番号 1.
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abstract = "We have studied the one-neutron removal reactions of C18 at 81 MeV/nucleon and C19 at 68 MeV/nucleon on a liquid hydrogen target. Transverse-momentum distributions of the core fragments C17 and C18, and their partial cross sections, are measured using coincidences with the γ rays. These are compared to theoretical calculations based on the continuum-discretized coupled-channels (CDCC) method. We have found that the transverse-momentum distributions of C17 are well described by the CDCC calculations, and the agreement provides evidence for the spin-parity assignments of Jπ=1/2+ for the 0.21-MeV state and Jπ=5/2+ for the 0.33-MeV state in C17. The Jπ=(2,3)+ assignment for the 4.0-MeV state in C18 is obtained for the first time based on the momentum distribution of C18. The measured partial cross sections are consistent with the CDCC calculations combined with shell-model spectroscopic factors. The present study demonstrates that the transverse-momentum distribution obtained in a one-neutron removal reaction on a proton target is as useful as the conventional longitudinal-momentum distribution measured with the heavier Be or C targets for determining the orbital angular momentum of a removed neutron.",
author = "Y. Kondo and T. Nakamura and Y. Satou and T. Matsumoto and N. Aoi and N. Endo and N. Fukuda and T. Gomi and Y. Hashimoto and M. Ishihara and S. Kawai and M. Kitayama and T. Kobayashi and Y. Matsuda and N. Matsui and T. Motobayashi and T. Nakabayashi and K. Ogata and T. Okumura and Ong, {H. J.} and Onishi, {T. K.} and H. Otsu and H. Sakurai and S. Shimoura and M. Shinohara and T. Sugimoto and S. Takeuchi and M. Tamaki and Y. Togano and Y. Yanagisawa",
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AU - Kondo, Y.

AU - Nakamura, T.

AU - Satou, Y.

AU - Matsumoto, T.

AU - Aoi, N.

AU - Endo, N.

AU - Fukuda, N.

AU - Gomi, T.

AU - Hashimoto, Y.

AU - Ishihara, M.

AU - Kawai, S.

AU - Kitayama, M.

AU - Kobayashi, T.

AU - Matsuda, Y.

AU - Matsui, N.

AU - Motobayashi, T.

AU - Nakabayashi, T.

AU - Ogata, K.

AU - Okumura, T.

AU - Ong, H. J.

AU - Onishi, T. K.

AU - Otsu, H.

AU - Sakurai, H.

AU - Shimoura, S.

AU - Shinohara, M.

AU - Sugimoto, T.

AU - Takeuchi, S.

AU - Tamaki, M.

AU - Togano, Y.

AU - Yanagisawa, Y.

PY - 2009/1/5

Y1 - 2009/1/5

N2 - We have studied the one-neutron removal reactions of C18 at 81 MeV/nucleon and C19 at 68 MeV/nucleon on a liquid hydrogen target. Transverse-momentum distributions of the core fragments C17 and C18, and their partial cross sections, are measured using coincidences with the γ rays. These are compared to theoretical calculations based on the continuum-discretized coupled-channels (CDCC) method. We have found that the transverse-momentum distributions of C17 are well described by the CDCC calculations, and the agreement provides evidence for the spin-parity assignments of Jπ=1/2+ for the 0.21-MeV state and Jπ=5/2+ for the 0.33-MeV state in C17. The Jπ=(2,3)+ assignment for the 4.0-MeV state in C18 is obtained for the first time based on the momentum distribution of C18. The measured partial cross sections are consistent with the CDCC calculations combined with shell-model spectroscopic factors. The present study demonstrates that the transverse-momentum distribution obtained in a one-neutron removal reaction on a proton target is as useful as the conventional longitudinal-momentum distribution measured with the heavier Be or C targets for determining the orbital angular momentum of a removed neutron.

AB - We have studied the one-neutron removal reactions of C18 at 81 MeV/nucleon and C19 at 68 MeV/nucleon on a liquid hydrogen target. Transverse-momentum distributions of the core fragments C17 and C18, and their partial cross sections, are measured using coincidences with the γ rays. These are compared to theoretical calculations based on the continuum-discretized coupled-channels (CDCC) method. We have found that the transverse-momentum distributions of C17 are well described by the CDCC calculations, and the agreement provides evidence for the spin-parity assignments of Jπ=1/2+ for the 0.21-MeV state and Jπ=5/2+ for the 0.33-MeV state in C17. The Jπ=(2,3)+ assignment for the 4.0-MeV state in C18 is obtained for the first time based on the momentum distribution of C18. The measured partial cross sections are consistent with the CDCC calculations combined with shell-model spectroscopic factors. The present study demonstrates that the transverse-momentum distribution obtained in a one-neutron removal reaction on a proton target is as useful as the conventional longitudinal-momentum distribution measured with the heavier Be or C targets for determining the orbital angular momentum of a removed neutron.

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DO - 10.1103/PhysRevC.79.014602

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