Observation of a low-lying neutron-unbound state in 19C

M. Thoennessen*, S. Mosby, N. S. Badger, T. Baumann, D. Bazin, M. Bennett, J. Brown, G. Christian, P. A. DeYoung, J. E. Finck, M. Gardner, E. A. Hook, B. Luther, D. A. Meyer, M. Mosby, W. F. Rogers, J. K. Smith, A. Spyrou, M. J. Strongman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Proton removal reactions from a secondary 22N beam were utilized to populate unbound states in neutron-rich carbon isotopes. Neutrons were measured with the Modular Neutron Array (MoNA) in coincidence with carbon fragments. A resonance with a decay energy of 76(14) keV was observed in the system C18+n corresponding to a state in 19C at an excitation energy of 653(95) keV. This resonance could correspond to the first 5/2 + state which was recently speculated to be unbound in order to describe 1n and 2n removal cross section measurements from 20C.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalNuclear Physics A
StatePublished - Aug 1 2013
Externally publishedYes


  • C deduced
  • Calculated
  • Measured
  • Nuclear reactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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