ONE AND 2 BROKEN PAIRS IN THE INTERACTING BOSON MODEL - HIGH-SPIN STATES IN HG-190, HG-192, HG-194

The structure of high-spin states in the transitional nuclei Hg-190, H g-192, Hg-194 is described in the framework of the interacting boson m odel with one and two broken pairs. The interacting boson model is ext ended to the physics of high-spin states by including selective noncol lective fermion states through the successive breaking of (SD) pairs. High-spin states are described in terms of broken pairs. In Hg-190, Hg -192 Hg-194 yrast states up to J = 24hBAR, including the positions of the first and second backbending, are reproduced by the calculation. D ata on E2 transitions in the region of the first backbending are compa red with model calculations.