Abstract
High-spin spectra are determined by approximately projecting states of good angular momentum from cranked Hartree-Fock-Bogoliubov (CHFB) wave functions. For each J the projected energy is E/sub PROJ/ approx. = E/sub CHFB/ - (..delta..J)/sup 2//2 J/sub CHFB/, where the moment of inertia J and the fluctuation ..delta..J are spin dependent. For /sup 168,170/Yb and /sup 174/Hf the projected J is less than the CHFB value for all J. Consequently approximate projection increases all yrast excitation energies for these nuclei.
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