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A b s t r a c t : T h i s e v a l u a t i o n p r e s e n t s d a t a f o r a l l n u c l e i w i t h m a s s n u m b e r A = 1 7 4 , w h i c h i n c l u d e s l e v e l s c h e m e s deduced from radioactive decay and nuclear reaction studies.Cutoff Date: All data received by November 1998 were evaluated. General Policies and Organization of Material:See the January issue of Nuclear Data Sheets. A c k n o w l e d g m e n t s : H u o J u n d e w o u l d l i k e t o t h a n k M . M a r t i n f o r h i s c a r e f u l r e v i e w o f a n d h e l p f u l d i s c u s s i o n sabout high-spin data. Also to M. R. Lay for her assistance with computer work and reference searches during the evaluator's visit to the Nuclear Data Project, Oak Ridge National Laboratory (May-August 1995). * R e s e a r c h s p o n s o r e d b y O f f i c e o f B a s i c E n e r g y S c i e n c e s , U S D e p a r t m e n t o f E n e r g y , u n d e r c o n t r a c t DE-AC03-76SF00098.G e n e r a l C o m m e n t s : T h r o u g h o u t t h i s e v a l u a t i o n , r o t a t i o n a l b a n d p a r a m e t e r s w e r e c a l c u l a t e d f r o m t h e s t a n d a r d energy equation:where A is given in keV, and B in eV. When A alone is given, B is assumed to be 0. T h e L i m i t a t i o n o f R e l a t i v e S t a t i s t i c a l W e i g h t s ( L R S W ) m e t h o d ( 8 8 W O Z O ) w a s e x t e n s i v e l y u s e d f o raveraging. This is a simple method which, for discrepant sets of data, limits to 50% the statistical weight of any measurement.

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