Abstract
A search for the neutron-unbound nucleus 21C was performed via the single-proton removal reaction from a beam of 22N at 68 MeV/u. Neutrons were detected with the Modular Neutron Array (MoNA) in coincidence with 20C fragments. No evidence for a low-lying state was found, and the reconstructed C20+n decay-energy spectrum could be described with an s-wave line shape with a scattering length limit of |a s| < 2.8fm, consistent with shell-model predictions. A comparison with a renormalized zero-range three-body model suggests that 22C is bound by less than 70 keV.
Original language | English (US) |
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Pages (from-to) | 69-78 |
Number of pages | 10 |
Journal | Nuclear Physics A |
Volume | 909 |
DOIs | |
State | Published - Jul 1 2013 |
Funding
This work was supported by the National Science Foundation under grants PHY-05-55488 , PHY-05-55439 , PHY-06-51627 , PHY-06-06007 , PHY-08-55456 , PHY-09-69173 , and PHY11-02511 .
Keywords
- C calculated
- C deduced
- C20+n deduced
- Measured
- Nuclear reactions
ASJC Scopus subject areas
- Nuclear and High Energy Physics