  Nuclei under non-collective rotation with a large angular momentum above some
threshold can assume a toroidal shape. In our previous work, we showed by using
cranked Skyrme-Hartree-Fock approach that even-even, N=Z, high-K, toroidal
isomeric states may have general occurrences for light nuclei with 28<=A<=52.
We present here some additional results and systematics on the particle-hole
nature of these high-spin toroidal isomers.
