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Angular distributions have been measured for the ' O(t, p) ' 0 reaction at a bombarding energy of 15.0MeV. Nine excited states below 6.02 MeV were observed. Comparison with microscopic two-particle distorted-wave Born approximation calculations yielded the following new J" assignments (E" in MeV, J ): 5.382, 0+; 5.603, 2+; 6.02, 4+. Tentative assignments of (1, 2+,3 ) and (1, 2+) were made to levels at 5.00 and 5.22 MeV, respectively. Spins of 2+, 4+, 2+, and 0+ to the levels at 1.674, 3.568, 4.065, arid 4.446 MeV were confirmed. The experimental spectrum of states below 6 MeV is compared with the results of an (sd)' shell-model calculation using the Preedom-%ildenthal interaction matrix elements. Identification of possible core-excited states in 0 is discussed. r NUCLEAR REACTEONS C(t, P) i~' O(t, P), E=15,0 MeV; measured g(E&, N ).& 0 deduced levels, J'. Enrichedtarget, DWBA analysis, shell model calculation.

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The S(t,p) S reaction was studied at 18-MeV bombarding energy with an overall energy resolution of 55 keV. Excited states of S were identified at energies (uncertainties in parentheses) of 6605(60) keV. Angular distributions were measured for protons leading to the ground state and ten lowest excited states. The data are compared with distorted-wave Born approximation calculations in which a microscopic two-nucleon form factor was employed. On this basis spin assignments have been made for several states. A comparison is made between levels observed in S and those predicted by the weak coupling and shell models.