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Study of 11 N by Elastic Resonance Scattering in Inverse Kinematics

In some nuclei along the drip-line, for example the exotic nuclei 11 Be, an energy level inversion between the 2s½ and 1p½ states occurs. Interest in the mirror state of 11 Be on the proton rich side, 11 N, resulted in a continuation of an earlier study searching for resonances in this nucleus. This experiment involved the resonance scattering reaction 10 C + p in inverse kinematics performed at the NSCL at MSU. Preliminary analysis of the data shows evidence for three energy states above the 10 C + p threshold with energies 1.3, 2.1, and 3.1 MeV. Using a potential-model analysis, these states can be interpreted as the ground and first two excited states of the 11 N system.