High-lying 0+ and 3- levels in 12C

The γ decays of the levels at 17.77 and 18.36 MeV in 12C are studied by proton capture and the assignments of (0+,1) and (3-,1), respectively, are confirmed. The very great strength of the decay of the (0+,1) level to the lower (1+,0) level at 12.71 MeV is consistent with a spin- and isospin-flip deuteronlike transition. The strong decay of the (3-,1) level to the lower (3-0,) level at 9.64 MeV is fairly typical of an analog to antianalog transition. The γ-decay widths of these levels are compared with shell-model calculations