A b s t r a c t : T h i s w o r k r e p r e s e n t s a n u p d a t e o f t h e p r e v i o u s e v a l u a t i o n o f t h e n u c l e a r d a t a o n t h e A = 1 5 5 n u c l i d e s (1994Re10). The experimental data from reaction and decay studies leading to these nuclides have been reviewed.T h e e l e m e n t s i n c l u d e d r a n g e f r o m C e ( Z = 5 8 ) t h r o u g h T a ( Z = 7 3 ) . T h e s e d a t a a r e s u m m a r i z e d a n d p r e s e n t e d , together with the adopted level schemes and properties. In addition, data on the g. s. properties of those A= 159 nuclides whose α decays lead to final states in the A=155 nuclides have been reconsidered.
General Policies and Organization ofMaterial: See the introductory pages. General Comments: Where deemed appropriate, rotational-band parameters have been computed and are presented. These parameters are defined according to the following expressions: E(J,K)=E(K)+A[J(J+1)-K 2 ]+B[J(J+1)-K 2 ] 2 ,with the following terms sometimes added for K=1/2, 3/2 and 5/2 bands: +(-1) J+1/2 aA(J+1/2) for K=1/2, +(-1) J+3/2 A 3 (J-1/2)(J+1/2)(J+3/2) for K=3/2, and +(-1) J+5/2 A 5 (J-3/2)(J-1/2)(J+1/2)(J+3/2)(J+5/2), for K=5/2. In the computation of values for these parameters, only the minimum number of levels, consistent with the number o f p a r a m e t e r s b e i n g d e t e r m i n e d , w a s u s e d . G e n e r a l l y , t h e s e w e r e t h e l o w e s t -l y i n g o n e s . I n m o s t c a s e s w h e r eband parameters are quoted, the levels that were used to compute them are given also.
