A b s t r a c t : N u c l e a r s p e c t r o s c o p i c i n f o r m a t i o n f o r e x p e r i m e n t a l l y i n v e s t i g a t e d n u c l i d e s o f m a s s 1 4 1 ( T e , I , X e , C s , Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, and Ho) has been evaluated. A summary of information obtained in various reaction and decay experiments is presented, together with data tables and adopted level schemes. Cutoff Date: Literature available up to Jan 1, 2012 has been consulted. 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 : T h e s t a t i s t i c a l a n a l y s i s o f γ -r a y d a t a a n d d e d u c e d l e v e l s c h e m e s i s c a r r i e d o u t t h r o u g h computer codes available at NNDC, BNL website: www.nndc.bnl.gov. The direct feedings to excited states in 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 c a l c u l a t e d u s i n g l o g f t c o d e . A l l Q v a l u e s h a v e b e e n a d o p t e d f r o m 2 0 1 2 W a 3 8 . T h e o r e t i c a l c o n v e r s i o n c o e f f i c i e n t s a r e f r o m B r I c c c o d e : v 2 . 2 b ( 2 0 -J a n -2 0 0 9 ) ( 2 0 0 8 K i 0 7 ) w i t h " F r o z e n O r b i t a l s " approximation, and with implicit uncertainty of 1.4%. Acknowledgments: The author is grateful to B. Singh and collaborators (McMaster University), and to F. Kondev ( A N L ) , w h o p r e p a r e d t h e X U N D L f i l e s u s e d i n t h i s e v a l u a t i o n , a s w e l l a s t o B . P r i t y c h e n k o ( B N L ) a n d collaborators for their NSR reference database work which made possible this evaluation. I also thank for the d e t a i l e d r e v i e w e r ' s w o r k o f t h e m a n u s c r i p t o f t h i s e v a l u a t i o n , a s w e l l a s L i b b y M c C u t c h a n ( B N L ) f o r u s e f u l a d d i t i o n a l r e v i e w c o m m e n t s , M a r i o n B l e n n a u ( B N L ) f o r t h e c o r r e c t i o n a n d t e c h n i c a l e d i t o r i a l w o r k , a n d J . K . T u l i f o r t h e o v e r a l l c o o r d i n a t i o n o f t h e e d i t o r i a l p r o c e s s . I a l s o t h a n k A . S o n z o g n i ( B N L ) f o r t h e coordination of my contract as well as M. Herman, Head of the NNDC (BNL) for giving me the opportunity of this work. Finally I pay tribute to the memory of T.W. Burrows, my mentor evaluator.
