The separation between single particle levels in nuclei plays the dominant role in determining the location of the neutron drip line. The separation also provides a test of current crossed shell model interactions if the experimental data is such that multiple shells are involved. The present work uses the $^{ 14}$N(d, p)$^{ 15}$N reaction to extract the 2s$_{ 1/2}$, and 1d$_{ 5/2}$ total neutron single particle strengths and then compares these results with a shell model calculation using a p-sd crossed shell interaction to identify the J$^\pi$ of all levels in $^{ 15}$N up to 12.8 MeV in excitation.
Categories: nucl-ex nucl-th