Multiconfiguration microscopic study of α+ 14C molecular states

Antisymmetric α+ 14C/sub g.s./ and α+ 14C(21+) wave functions are used in the generator coordinate formalism to investigate molecular properties of 18O states. Quadrupole moments, rms radii, and reduced α widths of these states are calculated as well as reduced E1 and E2 transition probabilities between them. A number of molecular bands are found and analyzed. The assignment of experimental states to these bands is discussed. The alternating-parity band proposed by Gai et al. is interpreted as a fortuitous alignment of molecular states belonging to different bands