The evaluated experimental data are presented for 14 known nuclides of mass 87 (Ga, Ge, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru). New datasets have been added for 87 Ga, 87 Se, 87 Kr, 87 Rb, 87 Sr, 87 Nb, and 87 Tc.The observation of and new lifetime measurements for 87 As at the NSCL Coupled Cyclotron Facility and the Oak Ridge Isochronous Cyclotron at the HRIBF-ORNL Facility are included in the adopted levels for this isotope.The new evaluation also includes an isomeric level at unknown energy for 8 7 Tc, changes to the adopted levels f o r 8 7 N b b a s e d o n n e w l y p u b l i s h e d d a t a i n c l u d i n g a n e x t e n s i o n o f t h e h i g h s p i n l e v e l s a n d n e w l i f e t i m e m e a s u r e m e n t s , a n d n e w h e a v y i o n d a t a f o r 8 7 K r . N e w h i g h s p i n l e v e l s f o r 8 7 R b w e r e o b s e r v e d , i n d i c a t i n g p o s s i b l e n e u t r o n c o r e e x c i t a t i o n s . I n a d d i t i o n , t h e g r o u n d s t a t e l i f e t i m e o f 8 7 R b h a s b e e n r e v i s e d a n d a n e w lifetime measurement for an excited level in 8 7 Rb indicates a possible proton spin flip. New excitation levels have been observed for the first time in 8 7 Se. New direct and precise measurement of atomic masses of 8 7 Tc, 8 7 Mo, 8 7 Nb, 8 7 Zr, 8 7 Mo and 8 7 Tc have greatly improved the Q value landscape in this mass region. This work supersedes the previous A=87 evaluation published in 2002He09, and Q values for all isotopes were updated to incorporate the mass evaluation in 2012Wa38. General Policies and Organization of Material: see http://www.nndc.bnl.gov/nds/NDSPolicies.pdf. G e n e r a l C o m m e n t s : I n s p i t e o f s i g n i f i c a n t e x p e r i m e n t a l w o r k o n t h e i s o b a r i c n u c l e i o f t h i s m a s s c h a i n s o m e d e f i c i e n c i e s r e m a i n . T h e i d e n t i f i c a t i o n o f 8 7 R u i s o t o p e w a s d o n e v i a p r o j e c t i l e f r a g m e n t a t i o n . H o w e v e r , excited state data remain nonexistent. Fragmentation data revealed new levels in 8 7 Tc, but the connection tothe ground state has yet to be clarified and excited levels have yet to be established for 8 7 As 8 7 Ga, and 8 7 Ge.The ground state spin and parity of 87 Br was changed to reflect new in-line measurements, but is tentative and more experimental work would be useful for further clarification.Cutoff Date: Literature available up to July 27, 2015 has been consulted.
A c k n o w l e d g m e n t s : T h e e v a l u a t o r s a r e g r a t e f u l t o t h eThe statistical analysis of γ -ray data and deduced level schemes is carried out through computer codes available a t N N D C , B N L w e b s i t e : w w w . n n d c . b n l . g o v . T h e d i r e c t f e e d i n g s t o e x c i t e d s t a t e s i n β -a n d ε d e c a y s h a v e g e n e r a l l y b e e n c o m p u t e d f r o m I ( γ + c e ) i n t e n s i t y b a l a n c e s a t e a c h l e v e l ; t h e a s s o c i a t e d l o g f t v a l u e s a r e calculated usi...
