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, 2009.
doi  abstract   bibtex   
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 $\gamma$ 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 J$\pi$=1/2+ for the 0.21-MeV state and J$\pi$=5/2+ for the 0.33-MeV state in C17. The J$\pi$=(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. \textcopyright 2009 The American Physical Society.
@article{Kondo2009b,
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 $\gamma$ 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 J$\pi$=1/2+ for the 0.21-MeV state and J$\pi$=5/2+ for the 0.33-MeV state in C17. The J$\pi$=(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. {\textcopyright} 2009 The American Physical Society.},
author = {Kondo, Y. and Nakamura, T. and Satou, Y. and Matsumoto, T. and Aoi, N. and Endo, N. and Fukuda, N. and Gomi, T. and Hashimoto, Y. and Ishihara, M. and Kawai, S. and Kitayama, M. and Kobayashi, T. and Matsuda, Y. and Matsui, N. and Motobayashi, T. and Nakabayashi, T. and Ogata, K. and Okumura, T. and Ong, H. J. and Onishi, T. K. and Otsu, H. and Sakurai, H. and Shimoura, S. and Shinohara, M. and Sugimoto, T. and Takeuchi, S. and Tamaki, M. and Togano, Y. and Yanagisawa, Y.},
doi = {10.1103/PhysRevC.79.014602},
issn = {1089490X},
journal = {Physical Review C - Nuclear Physics},
number = {1},
title = {{One-neutron removal reactions of C18 and C19 on a proton target}},
volume = {79},
year = {2009}
}

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