Halo Structure of the Neutron-Dripline Nucleus B 19

K. J. Cook; T. Nakamura; Y. Kondo; K. Hagino; K. Ogata; A. T. Saito; N. L. Achouri; T. Aumann; H. Baba; F. Delaunay; Q. Deshayes; P. Doornenbal; N. Fukuda; J. Gibelin; J. W. Hwang; N. Inabe; T. Isobe; D. Kameda; D. Kanno; S. Kim; N. Kobayashi; T. Kobayashi; T. Kubo; S. Leblond; J. Lee; F. M. Marqués; R. Minakata; T. Motobayashi; K. Muto; T. Murakami; D. Murai; T. Nakashima; N. Nakatsuka; A. Navin; S. Nishi; S. Ogoshi; N. A. Orr; H. Otsu; H. Sato; Y. Satou; Y. Shimizu; H. Suzuki; K. Takahashi; H. Takeda; S. Takeuchi; R. Tanaka; Y. Togano; J. Tsubota; A. G. Tuff; M. Vandebrouck; K. Yoneda

doi:10.1103/PhysRevLett.124.212503

Halo Structure of the Neutron-Dripline Nucleus B 19

K. J. Cook, T. Nakamura, Y. Kondo, K. Hagino, K. Ogata, A. T. Saito, N. L. Achouri, T. Aumann, H. Baba, F. Delaunay, Q. Deshayes, P. Doornenbal, N. Fukuda, J. Gibelin, J. W. Hwang, N. Inabe, T. Isobe, D. Kameda, D. Kanno, S. KimN. Kobayashi, T. Kobayashi, T. Kubo, S. Leblond, J. Lee, F. M. Marqués, R. Minakata, T. Motobayashi, K. Muto, T. Murakami, D. Murai, T. Nakashima, N. Nakatsuka, A. Navin, S. Nishi, S. Ogoshi, N. A. Orr, H. Otsu, H. Sato, Y. Satou, Y. Shimizu, H. Suzuki, K. Takahashi, H. Takeda, S. Takeuchi, R. Tanaka, Y. Togano, J. Tsubota, A. G. Tuff, M. Vandebrouck, K. Yoneda

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

36 被引用数 (Scopus)

抄録

The heaviest bound isotope of boron B19 has been investigated using exclusive measurements of its Coulomb dissociation, into B17 and two neutrons, in collisions with Pb at 220 MeV/nucleon. Enhanced electric dipole (E1) strength is observed just above the two-neutron decay threshold with an integrated E1 strength of B(E1)=1.64±0.06(stat)±0.12(sys) e2 fm2 for relative energies below 6 MeV. This feature, known as a soft E1 excitation, provides the first firm evidence that B19 has a prominent two-neutron halo. Three-body calculations that reproduce the energy spectrum indicate that the valence neutrons have a significant s-wave configuration and exhibit a dineutronlike correlation.

本文言語	英語
論文番号	212503
ジャーナル	Physical review letters
巻	124
号	21
DOI	https://doi.org/10.1103/PhysRevLett.124.212503
出版ステータス	出版済み - 5月 29 2020
外部発表	はい

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（全般）

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10.1103/PhysRevLett.124.212503

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Cook, K. J., Nakamura, T., Kondo, Y., Hagino, K., Ogata, K., Saito, A. T., Achouri, N. L., Aumann, T., Baba, H., Delaunay, F., Deshayes, Q., Doornenbal, P., Fukuda, N., Gibelin, J., Hwang, J. W., Inabe, N., Isobe, T., Kameda, D., Kanno, D., ... Yoneda, K. (2020). Halo Structure of the Neutron-Dripline Nucleus B 19. Physical review letters, 124(21), [212503]. https://doi.org/10.1103/PhysRevLett.124.212503

Cook, KJ, Nakamura, T, Kondo, Y, Hagino, K, Ogata, K, Saito, AT, Achouri, NL, Aumann, T, Baba, H, Delaunay, F, Deshayes, Q, Doornenbal, P, Fukuda, N, Gibelin, J, Hwang, JW, Inabe, N, Isobe, T, Kameda, D, Kanno, D, Kim, S, Kobayashi, N, Kobayashi, T, Kubo, T, Leblond, S, Lee, J, Marqués, FM, Minakata, R, Motobayashi, T, Muto, K, Murakami, T, Murai, D, Nakashima, T, Nakatsuka, N, Navin, A, Nishi, S, Ogoshi, S, Orr, NA, Otsu, H, Sato, H, Satou, Y, Shimizu, Y, Suzuki, H, Takahashi, K, Takeda, H, Takeuchi, S, Tanaka, R, Togano, Y, Tsubota, J, Tuff, AG, Vandebrouck, M & Yoneda, K 2020, 'Halo Structure of the Neutron-Dripline Nucleus B 19', Physical review letters, vol. 124, no. 21, 212503. https://doi.org/10.1103/PhysRevLett.124.212503

@article{3c339c5e95424eabb275b62efb9f7797,

title = "Halo Structure of the Neutron-Dripline Nucleus B 19",

abstract = "The heaviest bound isotope of boron B19 has been investigated using exclusive measurements of its Coulomb dissociation, into B17 and two neutrons, in collisions with Pb at 220 MeV/nucleon. Enhanced electric dipole (E1) strength is observed just above the two-neutron decay threshold with an integrated E1 strength of B(E1)=1.64±0.06(stat)±0.12(sys) e2 fm2 for relative energies below 6 MeV. This feature, known as a soft E1 excitation, provides the first firm evidence that B19 has a prominent two-neutron halo. Three-body calculations that reproduce the energy spectrum indicate that the valence neutrons have a significant s-wave configuration and exhibit a dineutronlike correlation.",

author = "Cook, {K. J.} and T. Nakamura and Y. Kondo and K. Hagino and K. Ogata and Saito, {A. T.} and Achouri, {N. L.} and T. Aumann and H. Baba and F. Delaunay and Q. Deshayes and P. Doornenbal and N. Fukuda and J. Gibelin and Hwang, {J. W.} and N. Inabe and T. Isobe and D. Kameda and D. Kanno and S. Kim and N. Kobayashi and T. Kobayashi and T. Kubo and S. Leblond and J. Lee and Marqu{\'e}s, {F. M.} and R. Minakata and T. Motobayashi and K. Muto and T. Murakami and D. Murai and T. Nakashima and N. Nakatsuka and A. Navin and S. Nishi and S. Ogoshi and Orr, {N. A.} and H. Otsu and H. Sato and Y. Satou and Y. Shimizu and H. Suzuki and K. Takahashi and H. Takeda and S. Takeuchi and R. Tanaka and Y. Togano and J. Tsubota and Tuff, {A. G.} and M. Vandebrouck and K. Yoneda",

note = "Funding Information: We thank the accelerator staff of the RIKEN Nishina Center for their efforts in delivering the intense beam. K. J. C. acknowledges the JSPS International Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. A. N. acknowledges the JSPS Invitation Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. N. L. A., F. D., J. G., F. M. M., and N. A. O. acknowledge partial support from the Franco-Japanese LIA-International Associated Laboratory for Nuclear Structure Problems as well as the French ANR-14-CE33-0022-02 EXPAND. The present work was supported in part by JSPS KAKENHI Grants No. JP24740154, No. JP16H02179, No. JP16K05352, No. JP24105005, and No. JP18H05404, the World Class University (R32-2008-000-10155-0) and the Global Ph.D. Fellowship (NRF-2011-0006492) programs of NRF Korea, and the Helmholtz International Center for FAIR. Funding Information: We thank the accelerator staff of the RIKEN Nishina Center for their efforts in delivering the intense Ca48 beam. K.J.C. acknowledges the JSPS International Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. A.N. acknowledges the JSPS Invitation Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. N.L.A., F.D., J.G., F.M.M., and N.A.O. acknowledge partial support from the Franco-Japanese LIA-International Associated Laboratory for Nuclear Structure Problems as well as the French ANR-14-CE33-0022-02 EXPAND. The present work was supported in part by JSPS KAKENHI Grants No.?JP24740154, No.?JP16H02179, No.?JP16K05352, No.?JP24105005, and No.?JP18H05404, the World Class University (R32-2008-000-10155-0) and the Global Ph.D. Fellowship (NRF-2011-0006492) programs of NRF Korea, and the Helmholtz International Center for FAIR. Publisher Copyright: {\textcopyright} 2020 American Physical Society..",

year = "2020",

month = may,

day = "29",

doi = "10.1103/PhysRevLett.124.212503",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

TY - JOUR

T1 - Halo Structure of the Neutron-Dripline Nucleus B 19

AU - Cook, K. J.

AU - Nakamura, T.

AU - Kondo, Y.

AU - Hagino, K.

AU - Ogata, K.

AU - Saito, A. T.

AU - Achouri, N. L.

AU - Aumann, T.

AU - Baba, H.

AU - Delaunay, F.

AU - Deshayes, Q.

AU - Doornenbal, P.

AU - Fukuda, N.

AU - Gibelin, J.

AU - Hwang, J. W.

AU - Inabe, N.

AU - Isobe, T.

AU - Kameda, D.

AU - Kanno, D.

AU - Kim, S.

AU - Kobayashi, N.

AU - Kobayashi, T.

AU - Kubo, T.

AU - Leblond, S.

AU - Lee, J.

AU - Marqués, F. M.

AU - Minakata, R.

AU - Motobayashi, T.

AU - Muto, K.

AU - Murakami, T.

AU - Murai, D.

AU - Nakashima, T.

AU - Nakatsuka, N.

AU - Navin, A.

AU - Nishi, S.

AU - Ogoshi, S.

AU - Orr, N. A.

AU - Otsu, H.

AU - Sato, H.

AU - Satou, Y.

AU - Shimizu, Y.

AU - Suzuki, H.

AU - Takahashi, K.

AU - Takeda, H.

AU - Takeuchi, S.

AU - Tanaka, R.

AU - Togano, Y.

AU - Tsubota, J.

AU - Tuff, A. G.

AU - Vandebrouck, M.

AU - Yoneda, K.

N1 - Funding Information: We thank the accelerator staff of the RIKEN Nishina Center for their efforts in delivering the intense beam. K. J. C. acknowledges the JSPS International Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. A. N. acknowledges the JSPS Invitation Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. N. L. A., F. D., J. G., F. M. M., and N. A. O. acknowledge partial support from the Franco-Japanese LIA-International Associated Laboratory for Nuclear Structure Problems as well as the French ANR-14-CE33-0022-02 EXPAND. The present work was supported in part by JSPS KAKENHI Grants No. JP24740154, No. JP16H02179, No. JP16K05352, No. JP24105005, and No. JP18H05404, the World Class University (R32-2008-000-10155-0) and the Global Ph.D. Fellowship (NRF-2011-0006492) programs of NRF Korea, and the Helmholtz International Center for FAIR. Funding Information: We thank the accelerator staff of the RIKEN Nishina Center for their efforts in delivering the intense Ca48 beam. K.J.C. acknowledges the JSPS International Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. A.N. acknowledges the JSPS Invitation Fellowship for Research in Japan, hosted by the Tokyo Institute of Technology. N.L.A., F.D., J.G., F.M.M., and N.A.O. acknowledge partial support from the Franco-Japanese LIA-International Associated Laboratory for Nuclear Structure Problems as well as the French ANR-14-CE33-0022-02 EXPAND. The present work was supported in part by JSPS KAKENHI Grants No.?JP24740154, No.?JP16H02179, No.?JP16K05352, No.?JP24105005, and No.?JP18H05404, the World Class University (R32-2008-000-10155-0) and the Global Ph.D. Fellowship (NRF-2011-0006492) programs of NRF Korea, and the Helmholtz International Center for FAIR. Publisher Copyright: © 2020 American Physical Society..

PY - 2020/5/29

Y1 - 2020/5/29

N2 - The heaviest bound isotope of boron B19 has been investigated using exclusive measurements of its Coulomb dissociation, into B17 and two neutrons, in collisions with Pb at 220 MeV/nucleon. Enhanced electric dipole (E1) strength is observed just above the two-neutron decay threshold with an integrated E1 strength of B(E1)=1.64±0.06(stat)±0.12(sys) e2 fm2 for relative energies below 6 MeV. This feature, known as a soft E1 excitation, provides the first firm evidence that B19 has a prominent two-neutron halo. Three-body calculations that reproduce the energy spectrum indicate that the valence neutrons have a significant s-wave configuration and exhibit a dineutronlike correlation.

AB - The heaviest bound isotope of boron B19 has been investigated using exclusive measurements of its Coulomb dissociation, into B17 and two neutrons, in collisions with Pb at 220 MeV/nucleon. Enhanced electric dipole (E1) strength is observed just above the two-neutron decay threshold with an integrated E1 strength of B(E1)=1.64±0.06(stat)±0.12(sys) e2 fm2 for relative energies below 6 MeV. This feature, known as a soft E1 excitation, provides the first firm evidence that B19 has a prominent two-neutron halo. Three-body calculations that reproduce the energy spectrum indicate that the valence neutrons have a significant s-wave configuration and exhibit a dineutronlike correlation.

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U2 - 10.1103/PhysRevLett.124.212503

DO - 10.1103/PhysRevLett.124.212503

M3 - Article

C2 - 32530691

AN - SCOPUS:85085972492

SN - 0031-9007

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 212503

ER -

Halo Structure of the Neutron-Dripline Nucleus B 19

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