Mass, Spectroscopy, and Two-Neutron Decay of Be 16

B. Monteagudo; F. M. Marque S; J. Gibelin; N. A. Orr; A. Corsi; Y. Kubota; J. Casal; J. Go Mez-Camacho; G. Authelet; H. Baba; C. Caesar; D. Calvet; A. Delbart; M. Dozono; J. Feng; F. Flavigny; J. M. Gheller; A. Giganon; A. Gillibert; K. Hasegawa; T. Isobe; Y. Kanaya; S. Kawakami; D. Kim; Y. Kiyokawa; M. Kobayashi; N. Kobayashi; T. Kobayashi; Y. Kondo; Z. Korkulu; S. Koyama; V. Lapoux; Y. Maeda; T. Motobayashi; T. Miyazaki; T. Nakamura; N. Nakatsuka; Y. Nishio; A. Obertelli; A. Ohkura; S. Ota; H. Otsu; T. Ozaki; V. Panin; S. Paschalis; E. C. Pollacco; S. Reichert; J. Y. Rousse; A. T. Saito; S. Sakaguchi; M. Sako; C. Santamaria; M. Sasano; H. Sato; M. Shikata; Y. Shimizu; Y. Shindo; L. Stuhl; T. Sumikama; Y. L. Sun; M. Tabata; Y. Togano; J. Tsubota; T. Uesaka; Z. H. Yang; J. Yasuda; K. Yoneda; J. Zenihiro

doi:10.1103/PhysRevLett.132.082501

Mass, Spectroscopy, and Two-Neutron Decay of Be 16

B. Monteagudo, F. M. Marque S, J. Gibelin, N. A. Orr, A. Corsi, Y. Kubota, J. Casal, J. Go Mez-Camacho, G. Authelet, H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J. M. Gheller, A. Giganon, A. Gillibert, K. HasegawaT. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa, M. Kobayashi, N. Kobayashi, T. Kobayashi, Y. Kondo, Z. Korkulu, S. Koyama, V. Lapoux, Y. Maeda, T. Motobayashi, T. Miyazaki, T. Nakamura, N. Nakatsuka, Y. Nishio, A. Obertelli, A. Ohkura, S. Ota, H. Otsu, T. Ozaki, V. Panin, S. Paschalis, E. C. Pollacco, S. Reichert, J. Y. Rousse, A. T. Saito, S. Sakaguchi, M. Sako, C. Santamaria, M. Sasano, H. Sato, M. Shikata, Y. Shimizu, Y. Shindo, L. Stuhl, T. Sumikama, Y. L. Sun, M. Tabata, Y. Togano, J. Tsubota, T. Uesaka, Z. H. Yang, J. Yasuda, K. Yoneda, J. Zenihiro

基礎粒子系物理学

研究成果: ジャーナルへの寄稿 › 学術誌 › 査読

10 被引用数 (Scopus)

抄録

The structure and decay of the most neutron-rich beryllium isotope, Be16, has been investigated following proton knockout from a high-energy B17 beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (Jπ=0+) and first excited (2+) state, with Ex=1.31(6) MeV. The mass excess of Be16 was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2+ level presents a far more diffuse neutron-neutron distribution.

本文言語	英語
論文番号	082501
ジャーナル	Physical review letters
巻	132
号	8
DOI	https://doi.org/10.1103/PhysRevLett.132.082501
出版ステータス	出版済み - 2月 23 2024

!!!All Science Journal Classification (ASJC) codes

物理学および天文学一般

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10.1103/PhysRevLett.132.082501

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Monteagudo, B., Marque S, F. M., Gibelin, J., Orr, N. A., Corsi, A., Kubota, Y., Casal, J., Go Mez-Camacho, J., Authelet, G., Baba, H., Caesar, C., Calvet, D., Delbart, A., Dozono, M., Feng, J., Flavigny, F., Gheller, J. M., Giganon, A., Gillibert, A., ... Zenihiro, J. (2024). Mass, Spectroscopy, and Two-Neutron Decay of Be 16. Physical review letters, 132(8), 記事 082501. https://doi.org/10.1103/PhysRevLett.132.082501

Monteagudo, B, Marque S, FM, Gibelin, J, Orr, NA, Corsi, A, Kubota, Y, Casal, J, Go Mez-Camacho, J, Authelet, G, Baba, H, Caesar, C, Calvet, D, Delbart, A, Dozono, M, Feng, J, Flavigny, F, Gheller, JM, Giganon, A, Gillibert, A, Hasegawa, K, Isobe, T, Kanaya, Y, Kawakami, S, Kim, D, Kiyokawa, Y, Kobayashi, M, Kobayashi, N, Kobayashi, T, Kondo, Y, Korkulu, Z, Koyama, S, Lapoux, V, Maeda, Y, Motobayashi, T, Miyazaki, T, Nakamura, T, Nakatsuka, N, Nishio, Y, Obertelli, A, Ohkura, A, Ota, S, Otsu, H, Ozaki, T, Panin, V, Paschalis, S, Pollacco, EC, Reichert, S, Rousse, JY, Saito, AT, Sakaguchi, S, Sako, M, Santamaria, C, Sasano, M, Sato, H, Shikata, M, Shimizu, Y, Shindo, Y, Stuhl, L, Sumikama, T, Sun, YL, Tabata, M, Togano, Y, Tsubota, J, Uesaka, T, Yang, ZH, Yasuda, J, Yoneda, K & Zenihiro, J 2024, 'Mass, Spectroscopy, and Two-Neutron Decay of Be 16', Physical review letters, vol. 132, no. 8, 082501. https://doi.org/10.1103/PhysRevLett.132.082501

@article{f14ef2d1ec72498ba8fb344bd9655f0a,

title = "Mass, Spectroscopy, and Two-Neutron Decay of Be 16",

abstract = "The structure and decay of the most neutron-rich beryllium isotope, Be16, has been investigated following proton knockout from a high-energy B17 beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (Jπ=0+) and first excited (2+) state, with Ex=1.31(6) MeV. The mass excess of Be16 was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2+ level presents a far more diffuse neutron-neutron distribution.",

author = "B. Monteagudo and {Marque S}, {F. M.} and J. Gibelin and Orr, {N. A.} and A. Corsi and Y. Kubota and J. Casal and {Go Mez-Camacho}, J. and G. Authelet and H. Baba and C. Caesar and D. Calvet and A. Delbart and M. Dozono and J. Feng and F. Flavigny and Gheller, {J. M.} and A. Giganon and A. Gillibert and K. Hasegawa and T. Isobe and Y. Kanaya and S. Kawakami and D. Kim and Y. Kiyokawa and M. Kobayashi and N. Kobayashi and T. Kobayashi and Y. Kondo and Z. Korkulu and S. Koyama and V. Lapoux and Y. Maeda and T. Motobayashi and T. Miyazaki and T. Nakamura and N. Nakatsuka and Y. Nishio and A. Obertelli and A. Ohkura and S. Ota and H. Otsu and T. Ozaki and V. Panin and S. Paschalis and Pollacco, {E. C.} and S. Reichert and Rousse, {J. Y.} and Saito, {A. T.} and S. Sakaguchi and M. Sako and C. Santamaria and M. Sasano and H. Sato and M. Shikata and Y. Shimizu and Y. Shindo and L. Stuhl and T. Sumikama and Sun, {Y. L.} and M. Tabata and Y. Togano and J. Tsubota and T. Uesaka and Yang, {Z. H.} and J. Yasuda and K. Yoneda and J. Zenihiro",

note = "Publisher Copyright: {\textcopyright} 2024 American Physical Society. ",

year = "2024",

month = feb,

day = "23",

doi = "10.1103/PhysRevLett.132.082501",

language = "English",

volume = "132",

journal = "Physical review letters",

issn = "0031-9007",

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T1 - Mass, Spectroscopy, and Two-Neutron Decay of Be 16

AU - Monteagudo, B.

AU - Marque S, F. M.

AU - Gibelin, J.

AU - Orr, N. A.

AU - Corsi, A.

AU - Kubota, Y.

AU - Casal, J.

AU - Go Mez-Camacho, J.

AU - Authelet, G.

AU - Baba, H.

AU - Caesar, C.

AU - Calvet, D.

AU - Delbart, A.

AU - Dozono, M.

AU - Feng, J.

AU - Flavigny, F.

AU - Gheller, J. M.

AU - Giganon, A.

AU - Gillibert, A.

AU - Hasegawa, K.

AU - Isobe, T.

AU - Kanaya, Y.

AU - Kawakami, S.

AU - Kim, D.

AU - Kiyokawa, Y.

AU - Kobayashi, M.

AU - Kobayashi, N.

AU - Kobayashi, T.

AU - Kondo, Y.

AU - Korkulu, Z.

AU - Koyama, S.

AU - Lapoux, V.

AU - Maeda, Y.

AU - Motobayashi, T.

AU - Miyazaki, T.

AU - Nakamura, T.

AU - Nakatsuka, N.

AU - Nishio, Y.

AU - Obertelli, A.

AU - Ohkura, A.

AU - Ota, S.

AU - Otsu, H.

AU - Ozaki, T.

AU - Panin, V.

AU - Paschalis, S.

AU - Pollacco, E. C.

AU - Reichert, S.

AU - Rousse, J. Y.

AU - Saito, A. T.

AU - Sakaguchi, S.

AU - Sako, M.

AU - Santamaria, C.

AU - Sasano, M.

AU - Sato, H.

AU - Shikata, M.

AU - Shimizu, Y.

AU - Shindo, Y.

AU - Stuhl, L.

AU - Sumikama, T.

AU - Sun, Y. L.

AU - Tabata, M.

AU - Togano, Y.

AU - Tsubota, J.

AU - Uesaka, T.

AU - Yang, Z. H.

AU - Yasuda, J.

AU - Yoneda, K.

AU - Zenihiro, J.

PY - 2024/2/23

Y1 - 2024/2/23

N2 - The structure and decay of the most neutron-rich beryllium isotope, Be16, has been investigated following proton knockout from a high-energy B17 beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (Jπ=0+) and first excited (2+) state, with Ex=1.31(6) MeV. The mass excess of Be16 was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2+ level presents a far more diffuse neutron-neutron distribution.

AB - The structure and decay of the most neutron-rich beryllium isotope, Be16, has been investigated following proton knockout from a high-energy B17 beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (Jπ=0+) and first excited (2+) state, with Ex=1.31(6) MeV. The mass excess of Be16 was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2+ level presents a far more diffuse neutron-neutron distribution.

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U2 - 10.1103/PhysRevLett.132.082501

DO - 10.1103/PhysRevLett.132.082501

M3 - Article

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AN - SCOPUS:85185845562

SN - 0031-9007

VL - 132

JO - Physical review letters

JF - Physical review letters

IS - 8

M1 - 082501

ER -

Mass, Spectroscopy, and Two-Neutron Decay of Be 16

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