DEFORMED ATOMIC-NUCLEI WITH DEGENERACIES OF THE NUCLEONIC LEVELS HIGHER THAN 2

As it is well known, the single-nucleonic levels in a nucleus manifest either the Kramers degeneracy d = 2, or, if a nucleus is spherical, a trivial ''magnetic'' degeneracy d = 2j + 1. It will be shown using th e results of the realistic total nuclear energy calculations that a po ssibilty of a fourfold degenerate levels exists in a number of N appro ximately 136 isotones due to their high intrinsic symmetry. Those exot ic states are predicted to be isomeric; they lie only a few hundreds o f keV above the ground state. Other possible nuclear regions where the same mechanism may take place are indicted.