|Title:||Study of ¹⁹C by One-Neutron Knockout|
Orr, Nigel A.
Achouri, N. Lynda
Marqués, F. Miguel
Tuff, Adam G.
|Author's alias:||村上, 哲也|
|Journal title:||EPJ Web of Conferences|
|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 the¹⁸C 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.|
|Description:||21st International Conference on Few-Body Problems in Physics, Chicago, IL, USA, May 18-22, 2015.|
|Rights:||© Owned by the authors, published by EDP Sciences, 2016. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.|
|Appears in Collections:||Journal Articles|
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