The intermediate structures in 12C+ 16O inelastic scattering were investigated at energies around Ec.m. = 30 MeV in the 12C(2+)+16O(g.s.) single excitation and the 12C(2+)+16O(3-,02+ ) mutual excitation channels and at Ec.m. = 22.6 MeV in the 12C(2+) + 16O(g.s.) single excitation channel. The angular distributions of the magnetic substate cross sections for the 2+ (4.439 MeV) state of 12C were measured by using the γ-ray recoil method in the center-of-mass ejectile-axis frame. It is shown that the structures at Ec.m. = 29.8 and 31.8 MeV in the 12C(2+)+16O(g.s.) channel are interpreted as resonances of Jπ = 16+ or 17- which decay dominantly through the aligned configurations with L = J-2. On the other hand, the structure at Ec.m. = 22.6 MeV is accounted for by assuming the overlap of two resonances having spins and parities of Jπ = 12+ and Jπ = 16+. In the 12C(2+)+16O(3-,02+ ) channel, little oscillatory structures are observed in the m-substate angular distributions so that the resonance spins cannot be extracted.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics