Some (t, p) Reactions in Light Nuclei

The (t, p) reactions induced in the target nuclei 10B, 12C, 16O and 27Al have been investigated at an incident triton energy of 5.5MeV. The angular distributions of the observed proton groups have been compared with a theory of double stripping and good agreement has been obtained with the theoretical predictions for transfers of 0, 1, 2 and (more tentatively) 3 units of orbital angular momentum. A new level in 12B at an excitation of 4.297 MeV is reported. Spin and parity assignments have been made for the levels of 14C at excitations of 6.582 MeV (1-), 6.725 MeV (probably 3-), a hitherto unreported level at 7.009 MeV (0+) and at 7.335 MeV (probably 2-). The existence of levels in 18O at 3.634 and 4.448 MeV has been confirmed and the spins and parities have been determined to be 0+ and 3- respectively. The spin and parity of the state in 18O at 3.915 MeV excitation have also been determined as 2+. The behaviour of the 16O(t, p)18O reaction leading to the ground and first four excited states of 18O has been found to be consistent with the 18O configurations predicted by the intermediate coupling theory. The atomic mass excess of 29Al has been found to be -9.647±0.015 MeV and the excitations of forty-two new levels of 29Al have been measured.