This document is the latest in a series of compilations of fission yield data Fission yield measurements reported in the open literature and calculated charge distributions have been used to produce a recommended set of yields for the fission products The original data with reference sources, and the recommended yields axe presented in tabular form These include many nuclides which fission by neutrons at several energies These energies include thermal energies (T), fission spectrum energies (F), 14 meV High Energy (H or HE), and spontaneous fission (S), in six sets of ten each Set A includes U235T, U235F, U235HE, U238F, U238HE, Pu239T, Pu239F, Pu241T, U233T, Th232F Set B includes U233F, U233HE, U236F, Pu239H, Pu240F, Pu241F, Pu242F, Th232H, Np237F, Cf252S Set C includes U234F, U237F, Pu240H, U234HE, U236HE, Pu238F, Am241F, Am243F, Np238F, Cm242F Set D includes Th227T, Th229T, Pa231F, Am241T, Am241H, Am242MT, Cm245T, Cf249T, Cf251T, Es254T Set E includes Cf250S, Cm244S, Cm248S, Es253S, Fm254S, Fm255T, Fm256S, Np237H, U232T, U238S Set F includes Cm243T, Cm246S, Cm243F, Cm244F, Cm246F, Cm248F, Pu242H, Np237T, Pu240T, and Pu242T to complete fission product yield evaluations for 60 fissioning systems in all This report also serves as the primary documentation for the second evaluation of yields in ENDF/B-VImore » released in 1993« less

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Evaluation and compilation of fission product yields 1993

Re-Os geochronology of organic rich sediments: an evaluation of organic matter analysis methods

Re-Os and Mo isotope systematics of black shales from the Middle Proterozoic Velkerri and Wollogorang Formations, McArthur Basin, northern Australia

Ion Exchange Selectivity Scales for Cations in Nitric Acid and Sulfuric Acid Media with a Sulfonated Polystyrene Resin.

Electrodimerization: I. One-electron irreversible dimerization. Diagnostic criteria and rate determination procedures for voltammetric studies

The distributions of 57 metallic ions were measured for three quaternary amines, tetrapropyl, tetrabutyl, and HNO/sub 3/, H/sub 2/SO/sub 4/, HF, HCl, and NaOH, over the concentration range of 0.2 to 5N. Distribution data are presented as plots of percent extraction vs. normality in a series of 5 periodic charts. Many separations for radiochemical and general analytical application are proposed. (auth)

Extraction of the Elements as Quaternary (Propyl, Butyl, and Hexyl) Amine Complexes

Operational amplifier potentiostats employing positive feedback for IR compensation. I. Theoretical analysis of stability and bandpass characteristics

Operational amplifier potentiostats employing positive feedback for IR compensation. II. Application to a.c. polarography

Two spectrophotometric extraction methods specific for uranium are described. Uranium as tetrapropylammonium uranyl trintrate is quantitatively separated from large quantities of diverse ions by extraction into methyl isobutyl ketone (4-methyl-2-penthnone) from an acid-deficient aluminum nitrate salting solution. Milligram levels are determined by a direct absorbance measurement of the trinitrate complex in the separated organic phase at 452 m alpha Microgram amounts are determined by adding dibenzoylmethane (1,3-dipbenyl- 1,3propanedione) in an ethyl alcohol -pyridine mixture to the separated organic phase and measuring the absorbance of the chelate at 415 m mu . The coefficient ofvariation is less than 1% at the 10-mg. and 25- gamma levels. The limit of sensitivity is 0.8 gamma for the dibenzoylmethane method. (auth)

G. L. Booman

Papers

Extraction of the Elements as Quaternary (Propyl, Butyl, and Hexyl) Amine Complexes

Operational amplifier potentiostats employing positive feedback for IR compensation. I. Theoretical analysis of stability and bandpass characteristics

Operational amplifier potentiostats employing positive feedback for IR compensation. II. Application to a.c. polarography

Spectrophotometric Extraction Methods Specific for Uranium

Determination of Free Acid in Presence of Hydrolyzable Ions