Abstract
Performing a number-projection calculation on the cranked Hartree-Fock-Bogoliubov (CHFB) wave functions for 158Dy magnetic moments and pair fields have been calculated for this nucleus. These results do not differ significantly from the usual (number-unprojected) CHFB theory. So, in view of this, we have studied the high-spin behaviour of five nuclei 154Sm, 158Gd, 158Dy, 164Dy, and 166Er within the framework of the self-consistent CHFB approach without number projection. The variation of g-factor and pair correlation as a function of angular momentum is studied for spin up to 20 + with a particular emphasis to see the mutual differences amongst these nuclei. Calculated g-factors are in good qualitative agreement in all the cases wherever experimental data are available and inclusion of quadrupole pairing improves the agreement. There is always a minimum in g at I ≈ 14 caused by rotation alignment of ν i 13 2 orbitals. This is followed by an increase due to proton alignment.
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