The nuclear structure of has been studied by the reaction at 70 MeV. Thirteen levels were identified in and angular distributions have been measured for the first time for this reaction. Based on the observed transferred angular momentum dependence of the angular distributions, a spin-parity assignment has been made for several states in With the inclusion of the data on quartet analog states have been completed for six levels in the isobar system. The level shifts in these nuclei are analyzed in terms of the isobaric multiplet mass equation (IMME). The results of such an analysis show a slight linear dependence of the and coefficients of the equation on the excitation energy. The coefficients for the positive parity states seem to follow a different systematics than the negative parity states, suggesting that these parity-dependent level shifts are reflecting the structure change. These coefficients of the IMME are discussed.
- Received 11 February 1998
©1998 American Physical Society