Study of 19C by One-Neutron Knockout

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 KuboSylvain 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

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

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-MeV state is in line with the reported 5/22+ state.

Original languageEnglish
Article number06014
JournalEPJ Web of Conferences
Volume113
DOIs
Publication statusPublished - 2016 Mar 25
Event21st International Conference on Few-Body Problems in Physics, FB 2015 - Chicago, United States
Duration: 2015 May 182015 May 22

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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