Your browser doesn't support javascript.
loading
Halo Structure of the Neutron-Dripline Nucleus
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; Kim, S; Kobayashi, N; Kobayashi, T; Kubo, T; Leblond, S; Lee, J; Marqués, F M; Minakata, R; Motobayashi, T; Muto, K; Murakami, T; Murai, D; Nakashima, T; Nakatsuka, N; Navin, A; Nishi, S; Ogoshi, S; Orr, N A; Otsu, H; Sato, H; Satou, Y; Shimizu, Y; Suzuki, H; Takahashi, K; Takeda, H; Takeuchi, S; Tanaka, R; Togano, Y; Tsubota, J; Tuff, A G; Vandebrouck, M.
Afiliação
  • Cook KJ; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Nakamura T; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Kondo Y; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Hagino K; Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
  • Ogata K; Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan.
  • Saito AT; Department of Physics, Osaka City University, Osaka 558-8585, Japan.
  • Achouri NL; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Aumann T; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Baba H; Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany.
  • Delaunay F; ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.
  • Deshayes Q; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Doornenbal P; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Fukuda N; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Gibelin J; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Hwang JW; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Inabe N; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Isobe T; Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea.
  • Kameda D; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Kanno D; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Kim S; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Kobayashi N; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Kobayashi T; Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea.
  • Kubo T; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Leblond S; Department of Physics, Tohoku University, Aramaki Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan.
  • Lee J; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Marqués FM; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Minakata R; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Motobayashi T; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Muto K; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Murakami T; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Murai D; Department of Physics, Tohoku University, Aramaki Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan.
  • Nakashima T; Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
  • Nakatsuka N; Department of Physics, Rikkyo University, Toshima, Tokyo 171-8501, Japan.
  • Navin A; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Nishi S; Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
  • Ogoshi S; GANIL, CEA/DRF-CNRS/IN2P3, 14076 Caen Cedex 05, France.
  • Orr NA; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Otsu H; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Sato H; LPC Caen, Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, 14050 Caen Cedex, France.
  • Satou Y; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Shimizu Y; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Suzuki H; Department of Physics and Astronomy, Seoul National University, 599 Gwanak, Seoul 151-742, Republic of Korea.
  • Takahashi K; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Takeda H; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Takeuchi S; Department of Physics, Tohoku University, Aramaki Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan.
  • Tanaka R; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Togano Y; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Tsubota J; RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan.
  • Tuff AG; Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan.
  • Vandebrouck M; ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany.
Phys Rev Lett ; 124(21): 212503, 2020 May 29.
Article em En | MEDLINE | ID: mdl-32530691
ABSTRACT
The heaviest bound isotope of boron ^{19}B has been investigated using exclusive measurements of its Coulomb dissociation, into ^{17}B 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) e^{2} fm^{2} for relative energies below 6 MeV. This feature, known as a soft E1 excitation, provides the first firm evidence that ^{19}B 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.
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article