Density and viscosity of liquid Pu-U alloys
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c u l a t e d f r o m t h e d a m p i n g e f f e c t of t h e f l u i d o n t h e p e n d u l u m . The s e a l e d cup p r e v e n t e d v a p o r i z a t i o n a n d r e a c t i o n o f t h e liquid a l l o y w i t h a t m o s p h e r i c g a s e s . F i v e P u - U a l l o y s c o n t a i n i n g 5.5, 1 0 . 8 , 1 6 . 6 , 2 2 . 4 , a n d 28.5 wt pet U w e r e p r e p a r e d w h e n the a p p r o p r i a t e w e i g h t s of t h e e l e m e n t s w e r e s e a l e d into t a n t a l u m c a p s u l e s . T h e u r a n i u m was o f high p u r i t y c o n t a i n i n g a p p r o x i m a t e l y 450 p p m o f d e t e c t a b l e i m p u r i t i e s . S o m e of t h e s e m a j o r i m p u r i t i e s w e r e : F e , 64; N i , 14; Si, 43; C a ,
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