Study of
- Jongwon Hwang
- Sunji Kim
- Yoshiteru Satou
- Nigel A. Orr
- Takashi Nakamura
- Yosuke Kondo
- Julien Gibelin
- N. Lynda Achouri
- Thomas Aumann
- Hidetada Baba
- Franck Delaunay
- Pieter Doornenbal
- Naoki Fukuda
- Naohito Inabe
- Tadaaki Isobe
- Daisuke Kameda
- Daiki Kanno
- Nobuyuki Kobayashi
- Toshio Kobayashi
- Toshiyuki Kubo
- Sylvain Leblond
- Jenny Lee
- F. Miguel Marqués
- Ryogo Minakata
- Tohru Motobayashi
- Daichi Murai
- Tetsuya Murakami
- Kotomi Muto
- Tomohiro Nakashima
- Noritsugu Nakatsuka
- Alahari Navin
- Seijiro Nishi
- Shun Ogoshi
- Hideaki Otsu
- Hiromi Sato
- Yohei Shimizu
- Hiroshi Suzuki
- Kento Takahashi
- Hiroyuki Takeda
- Satoshi Takeuchi
- Ryuki Tanaka
- Yasuhiro Togano
- Adam G. Tuff
- Marine Vandebrouck
- Ken-ichiro Yoneda
DOIAbstract
The spectroscopic structure of 19C, a prominent one-neutron halo nucleus, has been studied with a 20C secondary beam at 290 MeV/nucleon and a carbon target. Neutron-unbound states populated by the one-neutron knockout reaction were investigated by means of the invariant mass method. The preliminary relative energy spectrum and parallel momentum distribution of the knockout residue, 19C*, were reconstructed from the measured four momenta of the 18C fragment, neutron, and beam. Three resonances were observed in the spectrum, which correspond to the states at Ex = 0.62(9), 1.42(10), and 2.89(10) MeV. The parallel momentum distributions for the 0.62-MeV and 2.89-MeV states suggest spin-parity assignments of 5/2+ and 1/2−, respectively. The 1.42...
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