Abstract
A potential-model calculation has given reasonably precise values for the energies of the 1/2{sup +} first excited state of {sup 9}B and the excited 0{sup +} state of {sup 10}C. We here extend this calculation to allow for nonzero widths of the 1/2{sup +} and 5/2{sup +} levels of {sup 9}Be and {sup 9}B that are involved in the calculation. The {sup 9}B 1/2{sup +} peak energy (but not the resonance energy) appears to be well determined. The {sup 10}C 0{sup +} energy is determined sufficiently well to make it unlikely that a state recently observed in {sup 10}C at 4.20 MeV could be the 0{sup +} state, as has been suggested.
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