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  1. Article ; Online: Mass, Spectroscopy, and Two-Neutron Decay of ^{16}Be.

    Monteagudo, B / Marqués, F M / Gibelin, J / Orr, N A / Corsi, A / Kubota, Y / Casal, J / Gómez-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 /
    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, E C / Reichert, S / Rousse, J-Y / Saito, A T / Sakaguchi, S / Sako, M / Santamaria, C / Sasano, M / Sato, H / Shikata, M / Shimizu, Y / Shindo, Y / Stuhl, L / Sumikama, T / Sun, Y L / Tabata, M / Togano, Y / Tsubota, J / Uesaka, T / Yang, Z H / Yasuda, J / Yoneda, K / Zenihiro, J

    Physical review letters

    2024  Volume 132, Issue 8, Page(s) 82501

    Abstract: The structure and decay of the most neutron-rich beryllium isotope, ^{16}Be, has been investigated following proton knockout from a high-energy ^{17}B beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2. ...

    Abstract The structure and decay of the most neutron-rich beryllium isotope, ^{16}Be, has been investigated following proton knockout from a high-energy ^{17}B 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 (J^{π}=0^{+}) and first excited (2^{+}) state, with E_{x}=1.31(6)  MeV. The mass excess of ^{16}Be 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.
    Language English
    Publishing date 2024-03-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.082501
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  2. Article ; Online: First observation of

    Kondo, Y / Achouri, N L / Falou, H Al / Atar, L / Aumann, T / Baba, H / Boretzky, K / Caesar, C / Calvet, D / Chae, H / Chiga, N / Corsi, A / Delaunay, F / Delbart, A / Deshayes, Q / Dombrádi, Zs / Douma, C A / Ekström, A / Elekes, Z /
    Forssén, C / Gašparić, I / Gheller, J-M / Gibelin, J / Gillibert, A / Hagen, G / Harakeh, M N / Hirayama, A / Hoffman, C R / Holl, M / Horvat, A / Horváth, Á / Hwang, J W / Isobe, T / Jiang, W G / Kahlbow, J / Kalantar-Nayestanaki, N / Kawase, S / Kim, S / Kisamori, K / Kobayashi, T / Körper, D / Koyama, S / Kuti, I / Lapoux, V / Lindberg, S / Marqués, F M / Masuoka, S / Mayer, J / Miki, K / Murakami, T / Najafi, M / Nakamura, T / Nakano, K / Nakatsuka, N / Nilsson, T / Obertelli, A / Ogata, K / de Oliveira Santos, F / Orr, N A / Otsu, H / Otsuka, T / Ozaki, T / Panin, V / Papenbrock, T / Paschalis, S / Revel, A / Rossi, D / Saito, A T / Saito, T Y / Sasano, M / Sato, H / Satou, Y / Scheit, H / Schindler, F / Schrock, P / Shikata, M / Shimizu, N / Shimizu, Y / Simon, H / Sohler, D / Sorlin, O / Stuhl, L / Sun, Z H / Takeuchi, S / Tanaka, M / Thoennessen, M / Törnqvist, H / Togano, Y / Tomai, T / Tscheuschner, J / Tsubota, J / Tsunoda, N / Uesaka, T / Utsuno, Y / Vernon, I / Wang, H / Yang, Z / Yasuda, M / Yoneda, K / Yoshida, S

    Nature

    2023  Volume 620, Issue 7976, Page(s) 965–970

    Abstract: Subjecting a physical system to extreme conditions is one of the means often used to obtain a better understanding and deeper insight into its organization and structure. In the case of the atomic nucleus, one such approach is to investigate isotopes ... ...

    Abstract Subjecting a physical system to extreme conditions is one of the means often used to obtain a better understanding and deeper insight into its organization and structure. In the case of the atomic nucleus, one such approach is to investigate isotopes that have very different neutron-to-proton (N/Z) ratios than in stable nuclei. Light, neutron-rich isotopes exhibit the most asymmetric N/Z ratios and those lying beyond the limits of binding, which undergo spontaneous neutron emission and exist only as very short-lived resonances (about 10
    Language English
    Publishing date 2023-08-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06352-6
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  3. Article ; Online: Publisher Correction: First observation of

    Kondo, Y / Achouri, N L / Falou, H Al / Atar, L / Aumann, T / Baba, H / Boretzky, K / Caesar, C / Calvet, D / Chae, H / Chiga, N / Corsi, A / Delaunay, F / Delbart, A / Deshayes, Q / Dombrádi, Zs / Douma, C A / Ekström, A / Elekes, Z /
    Forssén, C / Gašparić, I / Gheller, J-M / Gibelin, J / Gillibert, A / Hagen, G / Harakeh, M N / Hirayama, A / Hoffman, C R / Holl, M / Horvat, A / Horváth, Á / Hwang, J W / Isobe, T / Jiang, W G / Kahlbow, J / Kalantar-Nayestanaki, N / Kawase, S / Kim, S / Kisamori, K / Kobayashi, T / Körper, D / Koyama, S / Kuti, I / Lapoux, V / Lindberg, S / Marqués, F M / Masuoka, S / Mayer, J / Miki, K / Murakami, T / Najafi, M / Nakamura, T / Nakano, K / Nakatsuka, N / Nilsson, T / Obertelli, A / Ogata, K / de Oliveira Santos, F / Orr, N A / Otsu, H / Otsuka, T / Ozaki, T / Panin, V / Papenbrock, T / Paschalis, S / Revel, A / Rossi, D / Saito, A T / Saito, T Y / Sasano, M / Sato, H / Satou, Y / Scheit, H / Schindler, F / Schrock, P / Shikata, M / Shimizu, N / Shimizu, Y / Simon, H / Sohler, D / Sorlin, O / Stuhl, L / Sun, Z H / Takeuchi, S / Tanaka, M / Thoennessen, M / Törnqvist, H / Togano, Y / Tomai, T / Tscheuschner, J / Tsubota, J / Tsunoda, N / Uesaka, T / Utsuno, Y / Vernon, I / Wang, H / Yang, Z / Yasuda, M / Yoneda, K / Yoshida, S

    Nature

    2023  Volume 623, Issue 7988, Page(s) E13

    Language English
    Publishing date 2023-11-07
    Publishing country England
    Document type Published Erratum
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06815-w
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  4. Article ; Online: Quasifree Neutron Knockout Reaction Reveals a Small s-Orbital Component in the Borromean Nucleus ^{17}B.

    Yang, Z H / Kubota, Y / Corsi, A / Yoshida, K / Sun, X-X / Li, J G / Kimura, M / Michel, N / Ogata, K / Yuan, C X / Yuan, Q / Authelet, G / Baba, H / Caesar, C / Calvet, D / Delbart, A / Dozono, M / Feng, J / Flavigny, F /
    Gheller, J-M / Gibelin, J / 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 / Marqués, F M / Motobayashi, T / Miyazaki, T / Nakamura, T / Nakatsuka, N / Nishio, Y / Obertelli, A / Ohkura, A / Orr, N A / Ota, S / Otsu, H / Ozaki, T / Panin, V / Paschalis, S / Pollacco, E C / Reichert, S / Roussé, J-Y / Saito, A T / Sakaguchi, S / Sako, M / Santamaria, C / Sasano, M / Sato, H / Shikata, M / Shimizu, Y / Shindo, Y / Stuhl, L / Sumikama, T / Sun, Y L / Tabata, M / Togano, Y / Tsubota, J / Xu, F R / Yasuda, J / Yoneda, K / Zenihiro, J / Zhou, S-G / Zuo, W / Uesaka, T

    Physical review letters

    2021  Volume 126, Issue 8, Page(s) 82501

    Abstract: A kinematically complete quasifree (p,pn) experiment in inverse kinematics was performed to study the structure of the Borromean nucleus ^{17}B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive ... ...

    Abstract A kinematically complete quasifree (p,pn) experiment in inverse kinematics was performed to study the structure of the Borromean nucleus ^{17}B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for 1s_{1/2} and 0d_{5/2} orbitals, and a surprisingly small percentage of 9(2)% was determined for 1s_{1/2}. Our finding of such a small 1s_{1/2} component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in ^{17}B. The present work gives the smallest s- or p-orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of s or p orbitals is not a prerequisite for the occurrence of a neutron halo.
    Language English
    Publishing date 2021-03-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.082501
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  5. Article ; Online: Metastable States of ^{92,94}Se: Identification of an Oblate K Isomer of ^{94}Se and the Ground-State Shape Transition between N=58 and 60.

    Lizarazo, C / Söderström, P-A / Werner, V / Pietralla, N / Walker, P M / Dong, G X / Xu, F R / Rodríguez, T R / Browne, F / Doornenbal, P / Nishimura, S / Niţă, C R / Obertelli, A / Ando, T / Arici, T / Authelet, G / Baba, H / Blazhev, A / Bruce, A M /
    Calvet, D / Caroll, R J / Château, F / Chen, S / Chung, L X / Corsi, A / Cortés, M L / Delbart, A / Dewald, M / Ding, B / Flavigny, F / Franchoo, S / Gerl, J / Gheller, J-M / Giganon, A / Gillibert, A / Górska, M / Gottardo, A / Kojouharov, I / Kurz, N / Lapoux, V / Lee, J / Lettmann, M / Linh, B D / Liu, J J / Liu, Z / Momiyama, S / Moschner, K / Motobayashi, T / Nagamine, S / Nakatsuka, N / Niikura, M / Nobs, C / Olivier, L / Patel, Z / Paul, N / Podolyák, Zs / Roussé, J-Y / Rudigier, M / Saito, T Y / Sakurai, H / Santamaria, C / Schaffner, H / Shand, C / Stefan, I / Steppenbeck, D / Taniuchi, R / Uesaka, T / Vaquero, V / Wimmer, K / Xu, Z

    Physical review letters

    2020  Volume 124, Issue 22, Page(s) 222501

    Abstract: Here we present new information on the shape evolution of the very neutron-rich ^{92,94}Se nuclei from an isomer-decay spectroscopy experiment at the Radioactive Isotope Beam Factory at RIKEN. High-resolution germanium detectors were used to identify ... ...

    Abstract Here we present new information on the shape evolution of the very neutron-rich ^{92,94}Se nuclei from an isomer-decay spectroscopy experiment at the Radioactive Isotope Beam Factory at RIKEN. High-resolution germanium detectors were used to identify delayed γ rays emitted following the decay of their isomers. New transitions are reported extending the previously known level schemes. The isomeric levels are interpreted as originating from high-K quasineutron states with an oblate deformation of β∼0.25, with the high-K state in ^{94}Se being metastable and K hindered. Following this, ^{94}Se is the lowest-mass neutron-rich nucleus known to date with such a substantial K hindrance. Furthermore, it is the first observation of an oblate K isomer in a deformed nucleus. This opens up the possibility for a new region of K isomers at low Z and at oblate deformation, involving the same neutron orbitals as the prolate orbitals within the classic Z∼72 deformed hafnium region. From an interpretation of the level scheme guided by theoretical calculations, an oblate deformation is also suggested for the ^{94}Se_{60} ground-state band.
    Language English
    Publishing date 2020-06-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.124.222501
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  6. Article ; Online: Surface Localization of the Dineutron in ^{11}Li.

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

    Physical review letters

    2020  Volume 125, Issue 25, Page(s) 252501

    Abstract: The formation of a dineutron in the ^{11}Li nucleus is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in ^{11}Li via the (p,pn) knockout reaction at 246  MeV/nucleon. The correlation ... ...

    Abstract The formation of a dineutron in the ^{11}Li nucleus is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in ^{11}Li via the (p,pn) knockout reaction at 246  MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calculations reveals the localization of the dineutron at r∼3.6  fm. The results also support the density dependence of dineutron formation as deduced from Hartree-Fock-Bogoliubov calculations for nuclear matter.
    Language English
    Publishing date 2020-12-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.125.252501
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  7. Article ; Online: Pairing Forces Govern Population of Doubly Magic ^{54}Ca from Direct Reactions.

    Browne, F / Chen, S / Doornenbal, P / Obertelli, A / Ogata, K / Utsuno, Y / Yoshida, K / Achouri, N L / Baba, H / Calvet, D / Château, F / Chiga, N / Corsi, A / Cortés, M L / Delbart, A / Gheller, J-M / Giganon, A / Gillibert, A / Hilaire, C /
    Isobe, T / Kobayashi, T / Kubota, Y / Lapoux, V / Liu, H N / Motobayashi, T / Murray, I / Otsu, H / Panin, V / Paul, N / Rodriguez, W / Sakurai, H / Sasano, M / Steppenbeck, D / Stuhl, L / Sun, Y L / Togano, Y / Uesaka, T / Wimmer, K / Yoneda, K / Aktas, O / Aumann, T / Boretzky, K / Caesar, C / Chung, L X / Flavigny, F / Franchoo, S / Gasparic, I / Gerst, R-B / Gibelin, J / Hahn, K I / Holl, M / Kahlbow, J / Kim, D / Körper, D / Koiwai, T / Kondo, Y / Koseoglou, P / Lee, J / Lehr, C / Linh, B D / Lokotko, T / MacCormick, M / Miki, K / Moschner, K / Nakamura, T / Park, S Y / Rossi, D / Sahin, E / Schindler, F / Simon, H / Söderström, P-A / Sohler, D / Takeuchi, S / Törnqvist, H / Tscheuschner, J / Vaquero, V / Wagner, V / Wang, S / Werner, V / Xu, X / Yamada, H / Yan, D / Yang, Z / Yasuda, M / Zanetti, L

    Physical review letters

    2021  Volume 126, Issue 25, Page(s) 252501

    Abstract: Direct proton-knockout reactions of ^{55}Sc at ∼220  MeV/nucleon were studied at the RIKEN Radioactive Isotope Beam Factory. Populated states of ^{54}Ca were investigated through γ-ray and invariant-mass spectroscopy. Level energies were calculated from ... ...

    Abstract Direct proton-knockout reactions of ^{55}Sc at ∼220  MeV/nucleon were studied at the RIKEN Radioactive Isotope Beam Factory. Populated states of ^{54}Ca were investigated through γ-ray and invariant-mass spectroscopy. Level energies were calculated from the nuclear shell model employing a phenomenological internucleon interaction. Theoretical cross sections to states were calculated from distorted-wave impulse approximation estimates multiplied by the shell model spectroscopic factors, which describe the wave function overlap of the ^{55}Sc ground state with states in ^{54}Ca. Despite the calculations showing a significant amplitude of excited neutron configurations in the ground-state of ^{55}Sc, valence proton removals populated predominantly the ground state of ^{54}Ca. This counterintuitive result is attributed to pairing effects leading to a dominance of the ground-state spectroscopic factor. Owing to the ubiquity of the pairing interaction, this argument should be generally applicable to direct knockout reactions from odd-even to even-even nuclei.
    Language English
    Publishing date 2021-07-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.252501
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  8. Article ; Online: 78

    Taniuchi, R / Santamaria, C / Doornenbal, P / Obertelli, A / Yoneda, K / Authelet, G / Baba, H / Calvet, D / Château, F / Corsi, A / Delbart, A / Gheller, J-M / Gillibert, A / Holt, J D / Isobe, T / Lapoux, V / Matsushita, M / Menéndez, J / Momiyama, S /
    Motobayashi, T / Niikura, M / Nowacki, F / Ogata, K / Otsu, H / Otsuka, T / Péron, C / Péru, S / Peyaud, A / Pollacco, E C / Poves, A / Roussé, J-Y / Sakurai, H / Schwenk, A / Shiga, Y / Simonis, J / Stroberg, S R / Takeuchi, S / Tsunoda, Y / Uesaka, T / Wang, H / Browne, F / Chung, L X / Dombradi, Z / Franchoo, S / Giacoppo, F / Gottardo, A / Hadyńska-Klęk, K / Korkulu, Z / Koyama, S / Kubota, Y / Lee, J / Lettmann, M / Louchart, C / Lozeva, R / Matsui, K / Miyazaki, T / Nishimura, S / Olivier, L / Ota, S / Patel, Z / Şahin, E / Shand, C / Söderström, P-A / Stefan, I / Steppenbeck, D / Sumikama, T / Suzuki, D / Vajta, Z / Werner, V / Wu, J / Xu, Z Y

    Nature

    2019  Volume 569, Issue 7754, Page(s) 53–58

    Abstract: Nuclear magic numbers correspond to fully occupied energy shells of protons or neutrons inside atomic nuclei. Doubly magic nuclei, with magic numbers for both protons and neutrons, are spherical and extremely rare across the nuclear landscape. Although ... ...

    Abstract Nuclear magic numbers correspond to fully occupied energy shells of protons or neutrons inside atomic nuclei. Doubly magic nuclei, with magic numbers for both protons and neutrons, are spherical and extremely rare across the nuclear landscape. Although the sequence of magic numbers is well established for stable nuclei, experimental evidence has revealed modifications for nuclei with a large asymmetry between proton and neutron numbers. Here we provide a spectroscopic study of the doubly magic nucleus
    Language English
    Publishing date 2019-05-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-019-1155-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Sequential Nature of (p,3p) Two-Proton Knockout from Neutron-Rich Nuclei.

    Frotscher, A / Gómez-Ramos, M / Obertelli, A / Doornenbal, P / Authelet, G / Baba, H / Calvet, D / Château, F / Chen, S / Corsi, A / Delbart, A / Gheller, J-M / Giganon, A / Gillibert, A / Isobe, T / Lapoux, V / Matsushita, M / Momiyama, S / Motobayashi, T /
    Niikura, M / Otsu, H / Paul, N / Péron, C / Peyaud, A / Pollacco, E C / Roussé, J-Y / Sakurai, H / Santamaria, C / Sasano, M / Shiga, Y / Shimizu, N / Steppenbeck, D / Takeuchi, S / Taniuchi, R / Uesaka, T / Wang, H / Yoneda, K / Ando, T / Arici, T / Blazhev, A / Browne, F / Bruce, A M / Carroll, R / Chung, L X / Cortés, M L / Dewald, M / Ding, B / Dombradi, Zs / Flavigny, F / Franchoo, S / Giacoppo, F / Górska, M / Gottardo, A / Hadyńska-Klęk, K / Korkulu, Z / Koyama, S / Kubota, Y / Jungclaus, A / Lee, J / Lettmann, M / Linh, B D / Liu, J / Liu, Z / Lizarazo, C / Louchart, C / Lozeva, R / Matsui, K / Miyazaki, T / Moschner, K / Nagamine, S / Nakatsuka, N / Nita, C / Nishimura, S / Nobs, C R / Olivier, L / Ota, S / Patel, Z / Podolyák, Zs / Rudigier, M / Sahin, E / Saito, T Y / Shand, C / Söderström, P-A / Stefan, I G / Sumikama, T / Suzuki, D / Orlandi, R / Vaquero, V / Vajta, Zs / Werner, V / Wimmer, K / Wu, J / Xu, Z

    Physical review letters

    2020  Volume 125, Issue 1, Page(s) 12501

    Abstract: Twenty-one two-proton knockout (p,3p) cross sections were measured from neutron-rich nuclei at ∼250  MeV/nucleon in inverse kinematics. The angular distribution of the three emitted protons was determined for the first time, demonstrating that the (p,3p) ...

    Abstract Twenty-one two-proton knockout (p,3p) cross sections were measured from neutron-rich nuclei at ∼250  MeV/nucleon in inverse kinematics. The angular distribution of the three emitted protons was determined for the first time, demonstrating that the (p,3p) kinematics are consistent with two sequential proton-proton collisions within the projectile nucleus. Ratios of (p,3p) over (p,2p) inclusive cross sections follow the trend of other many-nucleon removal reactions, further reinforcing the sequential nature of (p,3p) in neutron-rich nuclei.
    Language English
    Publishing date 2020-07-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.125.012501
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Extending the Southern Shore of the Island of Inversion to ^{28}F.

    Revel, A / Sorlin, O / Marqués, F M / Kondo, Y / Kahlbow, J / Nakamura, T / Orr, N A / Nowacki, F / Tostevin, J A / Yuan, C X / Achouri, N L / Al Falou, H / Atar, L / Aumann, T / Baba, H / Boretzky, K / Caesar, C / Calvet, D / Chae, H /
    Chiga, N / Corsi, A / Crawford, H L / Delaunay, F / Delbart, A / Deshayes, Q / Dombrádi, Z / Douma, C A / Elekes, Z / Fallon, P / Gašparić, I / Gheller, J-M / Gibelin, J / Gillibert, A / Harakeh, M N / He, W / Hirayama, A / Hoffman, C R / Holl, M / Horvat, A / Horváth, Á / Hwang, J W / Isobe, T / Kalantar-Nayestanaki, N / Kawase, S / Kim, S / Kisamori, K / Kobayashi, T / Körper, D / Koyama, S / Kuti, I / Lapoux, V / Lindberg, S / Masuoka, S / Mayer, J / Miki, K / Murakami, T / Najafi, M / Nakano, K / Nakatsuka, N / Nilsson, T / Obertelli, A / de Oliveira Santos, F / Otsu, H / Ozaki, T / Panin, V / Paschalis, S / Rossi, D / Saito, A T / Saito, T / Sasano, M / Sato, H / Satou, Y / Scheit, H / Schindler, F / Schrock, P / Shikata, M / Shimizu, Y / Simon, H / Sohler, D / Stuhl, L / Takeuchi, S / Tanaka, M / Thoennessen, M / Törnqvist, H / Togano, Y / Tomai, T / Tscheuschner, J / Tsubota, J / Uesaka, T / Yang, Z / Yasuda, M / Yoneda, K

    Physical review letters

    2020  Volume 124, Issue 15, Page(s) 152502

    Abstract: Detailed spectroscopy of the neutron-unbound nucleus ^{28}F has been performed for the first time following proton/neutron removal from ^{29}Ne/^{29}F beams at energies around 230  MeV/nucleon. The invariant-mass spectra were reconstructed for both the ^{ ...

    Abstract Detailed spectroscopy of the neutron-unbound nucleus ^{28}F has been performed for the first time following proton/neutron removal from ^{29}Ne/^{29}F beams at energies around 230  MeV/nucleon. The invariant-mass spectra were reconstructed for both the ^{27}F^{(*)}+n and ^{26}F^{(*)}+2n coincidences and revealed a series of well-defined resonances. A near-threshold state was observed in both reactions and is identified as the ^{28}F ground state, with S_{n}(^{28}F)=-199(6)  keV, while analysis of the 2n decay channel allowed a considerably improved S_{n}(^{27}F)=1620(60)  keV to be deduced. Comparison with shell-model predictions and eikonal-model reaction calculations have allowed spin-parity assignments to be proposed for some of the lower-lying levels of ^{28}F. Importantly, in the case of the ground state, the reconstructed ^{27}F+n momentum distribution following neutron removal from ^{29}F indicates that it arises mainly from the 1p_{3/2} neutron intruder configuration. This demonstrates that the island of inversion around N=20 includes ^{28}F, and most probably ^{29}F, and suggests that ^{28}O is not doubly magic.
    Language English
    Publishing date 2020-05-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.124.152502
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Bonn / Germany

    Z 4' 58/153: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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