Search for $^{21}$C and constraints on $^{22}$C
| Autor: | Mosby, S., Badger, N. S., Baumann, T., Bazin, D., Bennett, M., Brown, J., Christian, G., DeYoung, P. A., Finck, J. E., Gardner, M., Hinnefeld, J. D., Hook, E. A., Lunderberg, E. M., Luther, B., Meyer, D. A., Mosby, M., Peaslee, G. F., Rogers, W. F., Smith, J. K., Snyder, J., Spyrou, A., Strongman, M. J., Thoennessen, M. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.nuclphysa.2013.04.004 |
| Popis: | A search for the neutron-unbound nucleus $^{21}$C was performed via the single proton removal reaction from a beam of 22 N at 68 MeV/u. Neutrons were detected with the Modular Neutron Array (MoNA) in coincidence with $^{20}$C fragments. No evidence for a low-lying state was found, and the reconstructed $^{20}$C+n decay energy spectrum could be described with an s-wave line shape with a scattering length limit of |as| < 2.8 fm, consistent with shell model predictions. A comparison with a renormalized zero-range three-body model suggests that $^{22}$C is bound by less than 70 keV. Comment: Accepted for publication in Nuclear Physics A |
| Databáze: | arXiv |
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