Nucleus ^{26}O: A Barely Unbound System beyond the Drip Line.

  title={Nucleus ^\{26\}O: A Barely Unbound System beyond the Drip Line.},
  author={Yuki Kondo and Tsuyoshi Nakamura and Risako Tanaka and Ryogo Minakata and Shun Ogoshi and Nigel A. Orr and N. Lynda Achouri and Thomas Aumann and Hidetada Baba and Franck Delaunay and Pieter Doornenbal and Nanaho Fukuda and Julien Gibelin and J. W. Hwang and Naohito Inabe and Toshiaki Isobe and Daisuke Kameda and Daiki Kanno and S Kim and Nobuhiko Kobayashi and Tomohiro Kobayashi and Toshihiro Kubo and Sylvain Leblond and Jae Min Lee and Fernando M. B. Marques and Tohru Motobayashi and Daichi Murai and Tomoaki Murakami and Kotomi Muto and Takuya Nakashima and Noritsugu Nakatsuka and Alahari Navin and Seiji Nishi and Hideaki Otsu and Hirotaka Sato and Yoshiteru Satou and Yuichiro Shimizu and Hiroki Suzuki and Kengo Takahashi and H. Takeda and Satoshi Takeuchi and Y. Togano and Adam G. Tuff and Marine Vandebrouck and Ken-ichiro Yoneda},
  journal={Physical review letters},
  volume={116 10},
The unbound nucleus ^{26}O has been investigated using invariant-mass spectroscopy following one-proton removal reaction from a ^{27}F beam at 201  MeV/nucleon. The decay products, ^{24}O and two neutrons, were detected in coincidence using the newly commissioned SAMURAI spectrometer at the RIKEN Radioactive Isotope Beam Factory. The ^{26}O ground-state resonance was found to lie only 18±3(stat)±4(syst)  keV above threshold. In addition, a higher lying level, which is most likely the first 2… CONTINUE READING