The angular distributions of '~O(t, p) 0 transitions to 13 states in '~O have been analyzed by distorted wave techniques. Two-particIe transfer amplitudes from recent (s d) shell-modeI. calculations have been utilized to aid in the interpretation of the structure of~~O .The theoretical calculations reproduce the L admixtures in the angular distributions remarkably well for many of the Iow-Iying states, Ratios of measured-to-predicted cross sections are consistent to within a factor of 3. The correspondence between the experimentally known states of~~O and those predicted by the shell-model caIculations is discussed; most of the states with known J are well accounted for. NUCLEAR REACTIONS 'O(t, p): E =12.0 MeV, DWBA analysis of old data using shell-model wave functions.

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An antimony sulfide target has been bombarded by 12-MeV He 3 particles from the University of Pennsylvania Tandem Accelerator. The alpha-particle spectra at 15° and 45° have been determined by means of a broad-range spectrograph. Thirty-nine alpha-particle groups have been observed corresponding to states of S 31 with E x <7.8 MeV. These results are compared with the known information on the level structure of the mirror nucleus P 31 .