“…Above 9 MeV, theoretical work has been hampered, not only by the greater complexity of the shell-model configurations which become possible at higher energies, 3,5 but also by the previous lack of detailed experimental data concerning the bound states in N 15 above 9 MeV. Figure 1 shows the experimental energy levels [6][7][8][9][10] of N 15 and 0 15 and the first seven theoretical even-parity levels of Halbert and French. 3,4 Previous direct experimental observations of the energy levels in N 15 consist primarily of magneticspectrograph and electrostatic-deflection measurements from the N 14 (^)N 15 and C 13 (He 3 ,^)N 15 reactions.…”