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.

No abstract

No abstract

New measurements have been made with the Ne(P, t) reaction to excite the E~=2 rotational band in Ne. Coupled-channel Born approximation calculations fail to account for the angular distribution of the transition to the 4 member of this band, although they describe well that for the transition to the 2 member. Particularly significant is the failure of the cross section for the 4 transition to decrease at forward angles. This behavior is in disagreement with that expected for unnatural parity transitions in (p, t) reactions which proceed through multistep processes involving inelastic excitations. The implications of these results for the reaction mechanism are discussed.NUCLEAR REACTIONS Ne(P, t), E = 40 MeV; measured o'(0) for E,", = 4.97(2 ), 5.63 (3 ), and 7.01 (4 ) MeV. Compared to CCBA calculations.