High-spin states in /sup 28/Si from variation after angular-momentum projection

Variations after angular momentum projection for the 0/sup +/,...,10/sup +/ (K = 0) levels of the ground-state band and the excited prolate band in /sup 28/Si yield almost rotational extensions of both experimental bands, and a crossing of the oblate and prolate bands that should occur between the 8/sup +/ and 10/sup +/ levels. The band assignments of some recently observed levels are discussed.