Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes

D. T. Tran; H. J. Ong; G. Hagen; T. D. Morris; N. Aoi; T. Suzuki; Y. Kanada-En'Yo; L. S. Geng; S. Terashima; I. Tanihata; T. T. Nguyen; Y. Ayyad; P. Y. Chan; M. Fukuda; H. Geissel; M. N. Harakeh; T. Hashimoto; T. H. Hoang; E. Ideguchi; A. Inoue; G. R. Jansen; R. Kanungo; T. Kawabata; L. H. Khiem; W. P. Lin; K. Matsuta; M. Mihara; S. Momota; D. Nagae; N. D. Nguyen; D. Nishimura; T. Otsuka; A. Ozawa; P. P. Ren; H. Sakaguchi; C. Scheidenberger; J. Tanaka; M. Takechi; R. Wada; T. Yamamoto

doi:10.1038/s41467-018-04024-y

Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes

D. T. Tran, H. J. Ong, G. Hagen, T. D. Morris, N. Aoi, T. Suzuki, Y. Kanada-En'Yo, L. S. Geng, S. Terashima, I. Tanihata, T. T. Nguyen, Y. Ayyad, P. Y. Chan, M. Fukuda, H. Geissel, M. N. Harakeh, T. Hashimoto, T. H. Hoang, E. Ideguchi, A. InoueG. R. Jansen, R. Kanungo, T. Kawabata, L. H. Khiem, W. P. Lin, K. Matsuta, M. Mihara, S. Momota, D. Nagae, N. D. Nguyen, D. Nishimura, T. Otsuka, A. Ozawa, P. P. Ren, H. Sakaguchi, C. Scheidenberger, J. Tanaka, M. Takechi, R. Wada, T. Yamamoto

Advanced Computing for Chemistry and Mat

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The nuclear shell structure, which originates in the nearly independent motion of nucleons in an average potential, provides an important guide for our understanding of nuclear structure and the underlying nuclear forces. Its most remarkable fingerprint is the existence of the so-called magic numbers of protons and neutrons associated with extra stability. Although the introduction of a phenomenological spin-orbit (SO) coupling force in 1949 helped in explaining the magic numbers, its origins are still open questions. Here, we present experimental evidence for the smallest SO-originated magic number (subshell closure) at the proton number six in ^13-20C obtained from systematic analysis of point-proton distribution radii, electromagnetic transition rates and atomic masses of light nuclei. Performing ab initio calculations on ^14,15C, we show that the observed proton distribution radii and subshell closure can be explained by the state-of-the-art nuclear theory with chiral nucleon-nucleon and three-nucleon forces, which are rooted in the quantum chromodynamics.

Original language	English
Article number	1594
Journal	Nature Communications
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41467-018-04024-y
State	Published - Dec 1 2018

Funding

We thank T. Shima, H. Toki, K. Ogata and H. Horiuchi for discussion, K. Hebeler for providing matrix elements in Jacobi coordinates for 3NFs at NNLO, and C. Yuan for comments. H.J.O. and I.T. thank A. Tohsaki and his spouse, D.T.T. and T.T.N. acknowledge RCNP Visiting Young Scientist Support Program, D.T.T. and T.H.H. thank Nishimura International Scholarship Foundation and Matsuda Yosahichi Memorial Foreign Student Scholarship, respectively, for support. This work was supported in part by Hirose International Scholarship Foundation, the JSPS-VAST Bilateral Joint Research Project, Grand-in-Aid for Scientific Research Nos. 20244030, 20740163 and 23224008 from Japan Monbukagakusho, the Office of Nuclear Physics, U.S. Department of Energy, under grants DE-FG02-96ER40963, DE-SC0008499 (NUCLEI SciDAC collaboration), the Field Work Proposal ERKBP57 at Oak Ridge National Laboratory (ORNL), and the Vietnam government under the Program of Development in Physics by 2020. Computer time was provided by the Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program. This research used resources of RCNP Accelerator Facility and the Oak Ridge Leadership Computing Facility located at ORNL, which is supported by the Office of Science of the Department of Energy under Contract No. DE-AC05-00OR22725.

Access to Document

10.1038/s41467-018-04024-y

Cite this

Tran, D. T., Ong, H. J., Hagen, G., Morris, T. D., Aoi, N., Suzuki, T., Kanada-En'Yo, Y., Geng, L. S., Terashima, S., Tanihata, I., Nguyen, T. T., Ayyad, Y., Chan, P. Y., Fukuda, M., Geissel, H., Harakeh, M. N., Hashimoto, T., Hoang, T. H., Ideguchi, E., ... Yamamoto, T. (2018). Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes. Nature Communications, 9(1), Article 1594. https://doi.org/10.1038/s41467-018-04024-y

@article{53e4d08b0d7d415e8587cf3233de548a,

title = "Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes",

abstract = "The nuclear shell structure, which originates in the nearly independent motion of nucleons in an average potential, provides an important guide for our understanding of nuclear structure and the underlying nuclear forces. Its most remarkable fingerprint is the existence of the so-called magic numbers of protons and neutrons associated with extra stability. Although the introduction of a phenomenological spin-orbit (SO) coupling force in 1949 helped in explaining the magic numbers, its origins are still open questions. Here, we present experimental evidence for the smallest SO-originated magic number (subshell closure) at the proton number six in 13-20C obtained from systematic analysis of point-proton distribution radii, electromagnetic transition rates and atomic masses of light nuclei. Performing ab initio calculations on 14,15C, we show that the observed proton distribution radii and subshell closure can be explained by the state-of-the-art nuclear theory with chiral nucleon-nucleon and three-nucleon forces, which are rooted in the quantum chromodynamics.",

author = "Tran, {D. T.} and Ong, {H. J.} and G. Hagen and Morris, {T. D.} and N. Aoi and T. Suzuki and Y. Kanada-En'Yo and Geng, {L. S.} and S. Terashima and I. Tanihata and Nguyen, {T. T.} and Y. Ayyad and Chan, {P. Y.} and M. Fukuda and H. Geissel and Harakeh, {M. N.} and T. Hashimoto and Hoang, {T. H.} and E. Ideguchi and A. Inoue and Jansen, {G. R.} and R. Kanungo and T. Kawabata and Khiem, {L. H.} and Lin, {W. P.} and K. Matsuta and M. Mihara and S. Momota and D. Nagae and Nguyen, {N. D.} and D. Nishimura and T. Otsuka and A. Ozawa and Ren, {P. P.} and H. Sakaguchi and C. Scheidenberger and J. Tanaka and M. Takechi and R. Wada and T. Yamamoto",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s).",

year = "2018",

month = dec,

day = "1",

doi = "10.1038/s41467-018-04024-y",

language = "English",

volume = "9",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Research",

number = "1",

}

Tran, DT, Ong, HJ, Hagen, G , Morris, TD, Aoi, N, Suzuki, T, Kanada-En'Yo, Y, Geng, LS, Terashima, S, Tanihata, I, Nguyen, TT, Ayyad, Y, Chan, PY, Fukuda, M, Geissel, H, Harakeh, MN, Hashimoto, T, Hoang, TH, Ideguchi, E, Inoue, A, Jansen, GR, Kanungo, R, Kawabata, T, Khiem, LH, Lin, WP, Matsuta, K, Mihara, M, Momota, S, Nagae, D, Nguyen, ND, Nishimura, D, Otsuka, T, Ozawa, A, Ren, PP, Sakaguchi, H, Scheidenberger, C, Tanaka, J, Takechi, M, Wada, R & Yamamoto, T 2018, 'Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes', Nature Communications, vol. 9, no. 1, 1594. https://doi.org/10.1038/s41467-018-04024-y

TY - JOUR

T1 - Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes

AU - Tran, D. T.

AU - Ong, H. J.

AU - Hagen, G.

AU - Morris, T. D.

AU - Aoi, N.

AU - Suzuki, T.

AU - Kanada-En'Yo, Y.

AU - Geng, L. S.

AU - Terashima, S.

AU - Tanihata, I.

AU - Nguyen, T. T.

AU - Ayyad, Y.

AU - Chan, P. Y.

AU - Fukuda, M.

AU - Geissel, H.

AU - Harakeh, M. N.

AU - Hashimoto, T.

AU - Hoang, T. H.

AU - Ideguchi, E.

AU - Inoue, A.

AU - Jansen, G. R.

AU - Kanungo, R.

AU - Kawabata, T.

AU - Khiem, L. H.

AU - Lin, W. P.

AU - Matsuta, K.

AU - Mihara, M.

AU - Momota, S.

AU - Nagae, D.

AU - Nguyen, N. D.

AU - Nishimura, D.

AU - Otsuka, T.

AU - Ozawa, A.

AU - Ren, P. P.

AU - Sakaguchi, H.

AU - Scheidenberger, C.

AU - Tanaka, J.

AU - Takechi, M.

AU - Wada, R.

AU - Yamamoto, T.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - The nuclear shell structure, which originates in the nearly independent motion of nucleons in an average potential, provides an important guide for our understanding of nuclear structure and the underlying nuclear forces. Its most remarkable fingerprint is the existence of the so-called magic numbers of protons and neutrons associated with extra stability. Although the introduction of a phenomenological spin-orbit (SO) coupling force in 1949 helped in explaining the magic numbers, its origins are still open questions. Here, we present experimental evidence for the smallest SO-originated magic number (subshell closure) at the proton number six in 13-20C obtained from systematic analysis of point-proton distribution radii, electromagnetic transition rates and atomic masses of light nuclei. Performing ab initio calculations on 14,15C, we show that the observed proton distribution radii and subshell closure can be explained by the state-of-the-art nuclear theory with chiral nucleon-nucleon and three-nucleon forces, which are rooted in the quantum chromodynamics.

AB - The nuclear shell structure, which originates in the nearly independent motion of nucleons in an average potential, provides an important guide for our understanding of nuclear structure and the underlying nuclear forces. Its most remarkable fingerprint is the existence of the so-called magic numbers of protons and neutrons associated with extra stability. Although the introduction of a phenomenological spin-orbit (SO) coupling force in 1949 helped in explaining the magic numbers, its origins are still open questions. Here, we present experimental evidence for the smallest SO-originated magic number (subshell closure) at the proton number six in 13-20C obtained from systematic analysis of point-proton distribution radii, electromagnetic transition rates and atomic masses of light nuclei. Performing ab initio calculations on 14,15C, we show that the observed proton distribution radii and subshell closure can be explained by the state-of-the-art nuclear theory with chiral nucleon-nucleon and three-nucleon forces, which are rooted in the quantum chromodynamics.

UR - http://www.scopus.com/inward/record.url?scp=85045927864&partnerID=8YFLogxK

U2 - 10.1038/s41467-018-04024-y

DO - 10.1038/s41467-018-04024-y

M3 - Article

C2 - 29686394

AN - SCOPUS:85045927864

SN - 2041-1723

VL - 9

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 1594

ER -

Evidence for prevalent Z = 6 magic number in neutron-rich carbon isotopes

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this