The solubility of Ca metal has been measured in solutions comprised of varying amounts of CaO in CaCl2. The investigation has included solubility determinations at 850 and 900°C. The experimental work involved quenching specimens of selected compositions from elevated temperatures to preserve the high-temperature phase distribution. The reacted specimens were analyzed for dissolved Ca and for CaO composition. Data are presented which establish the effects of CaO composition on the solubility of Ca. Relevant thermodynamic parameters were determined from the solubility data. Additionally, the significance of this work to pyrochemical processing involving the Ca-CaO-CaCl2 system is discussed.
The Los Alamos National Laboratory and the USDA‐ARS examined soil erosion and water balance relationships for a trench cap used for the shallow land burial of low‐level radioactive wastes at Los Alamos, NM. Eight 3.05 by 10.7 m plots were installed with bare soil, tilled, and vegetated surface treatments on a 15 by 63 m trench cap constructed from soil and crushed tuff layers. A rotating boom rain simulator was used to estimate the soil erodibility and cover‐management factors of the Universal Soil Loss Equation (USLE) for this trench cap and for two undisturbed plots with natural vegetative cover. The implications of the results of this study are discussed relative to the management of infiltration and erosion processes at waste burial sites and compared with similar USDA research performed throughout the USA.
This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Atomic Energy Commission, nor any of their employees, nor any of their contractors, subcontractor*, or their employees, makes any warranty, express or implied, or essumes any tegel liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents that its use would not infringe privately owned rights. In the interest of prompt distribution, this LAMS report was not edited by the Technical Information staff.
INTRODUCTION The a b s o r p t i o n spectrum o f UF6 between 3400 and 4200 8, i s wellb u t t h e r e g i o n below 3400 ; h a s not been s t u d i e d i n any d e t a i l . 4200 A t h a t shows s i g n i f i c a n t s t r u c t u r e below 3400 A . The absorpt i o n i n t h i s r e g i o n must b e observed a t v e r y low p r e s s u r e s and r e l a t i v e l y s h o r t p a t h l e n g t h s . EXPERIMENTAL W e p r e s e n t h e r e a spectrum of UF6 between 2000 and 0 0 The a b s o r p t i o n c e l l was of s t a i n l e s s s t e e l , 5.5 cm long, and was c o n t a i n e d i n a c r y o s t a t of d e s i g n similar t o t h a t o f Ref. 4 . Sapphire windows were used on t h e c e l l , and q u a r t z windows on t h e c r y o s t a t j a c k e t . f l u o r i n e and subsequent o v e r n i g h t exposure t o UF6. The c e l l was c o n d i t i o n e d by o v e r n i g h t exposure t o The c e l l was f i l l e d w i t h 91.5 t o r r o f UF6, and t h e c r y o s t a t was cooled t o temperatures corresponding t o a p p r o p r i a t e vapor p r e s s u r e s f o r measuring t h e i n t e n s e a b s o r p t i o n . F i l l p r e s s u r e s of 65.1 and 5 2 1 Copyright 0 1975 hy Marcel Dekkcr. IncNcillicr this work n o r a n y p i r i may be reproduced or transmitted i i i a n y form or by any means. electronic or i~i e c l i a i~~c~i l , includiiip photocopying, microfilming. d i i d recording. or hy any infoi mation storage and retrieval systctn. without permission in writing from the publisher All Riphta Rescrvcd Downloaded by [University of Waterloo] at 03:45 15 December 2014 DE POORTER AND ROFER-DE POORTER 522 31.0 t o r r were a l s o used t o d e t e c t any p r e s s u r e e f f e c t s t h a t might r e s u l t from t h e design o f t h e c e l l . None were a p p a r e n t . Temperat u r e s ranged from 29G°K t o 228'K. The s p e c t r a were taken on a Becknian ACTA MIV spectrophotometer o p e r a t i n g i n the du:i1 -hcdm nioclc. through a dummy c e l l w i t h s a p p h i r e and q u a r t z windows spaced simil a r l y t o t h o s e i n t h e c r y o s t a t and g a s c e l l . Absorbances were manually recorded i n t e r v a l s o f 1(1 A o v e r tlic rLiii:1,c-of i n t e r c~~t . DATA IIANDLING Thc r-cfcrencc hc,lin 1~1 5 5 c d The c o n d i t i o n i n g o f t h e c e l l produced a c o a t i n g on t h e windows t h a t remained c o n s t a n t from one f i l l t o t h e n e x t . T h i s background was recorded, and a computer program was w r i t t e n t o
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