Studies on Isotope Separation of Lithium by Electromigration in Fused Lithium Bromide and Potassium Bromide Mixture, (I) Enrichment of Lithium-7

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概要

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• Lithium-7 was enriched by electromigration at 500℃ in fused LiBr-KBr mixture. The migration cell was made of Pyrex glass ; zircon sand (100〜200 mesh) was used for packing material, and graphite rods as electrodes. The electromigration was carried out for 13.4 days at a constant electric current of 165 mA. The distribution of the abundance ratio of the Li isotopes and of the composition of the salt in the migration cell were investigated. The abundance ratio of the Li isotopes (^7Li/^6Li) in the anode compartment was found to change from the original value of 12.20 to 46.9. The composition (Li/K in chemical equivalent ratio) of the salt reached roughly constant at 1.41 throughout the migration cell except in the vicinity of the cathode, and the value was not affected by the composition of the feed salt. It is the selective transport of salt of this composition toward the anode compartment by capillary action in the migration cell that is considered the mechanism that makes sustained electromigration possible. The mechanism of the accumulation of the isotope effect is also discussed.

• 東北大学の論文

著者

• Yamamura Yoshinobu

  The Research Institute For Iron Steel And Other Metals

関連論文

• Studies on Isotope Separation of Lithium by Electromigration in Fused Lithium Bromide and Potassium Bromide Mixture, (III) : Enrichment of Lithium-6
• Studies on Isotope Separation of Lithium by Electromigration in Fused Lithium Bromide and Potassium Bromide Mixture, (I) Enrichment of Lithium-7
• Studies on Isotope Separation of Lithium by Electromigration in Fused Lithium Bromide and Potassium Bromide Mixture, (II) : Composition of Salt in Anode Compartment
• Studies on Isotope Separation of Lithium by Electromigration in Fused Lithium Bromide and Potassium Bromide Mixture, (III):Enrichment of Lithium-6
• Studies on Isotope Separation of Lithium by Electromigration in Fused Lithium Bromide and Potassium Bromide Mixture, (II):Composition of Salt in Anode Compartment

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