Electrolytic Fractionation of Calcium Isotopes Using a Streaming Mercury Cathode

NORIAKI KISHIMA; MASATAKE HONDA

doi:10.5702/massspec1953.14.251

NORIAKI KISHIMA, MASATAKE HONDA

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1966 Volume 14 Issue 5 Pages 251-256

DOI https://doi.org/10.5702/massspec1953.14.251

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Published: December 25, 1966 Received: August 26, 1966 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: June 28, 2010 Reason for correction: - Correction: DTRECEIVED Details: Right : 19660826

Date of correction: June 28, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : Electrolytic fractionation of calcium isotopes was studied using a streaming mercury cathode in relation to the cell potential. Isotopic ratios, ⁴⁸Ca/⁴²Ca, were measured by a solid-source massspectrometer MS-5 manufactured by A.E.I., England. From the observed increasing tendency of the sepration factor, α^42-48;, with decreasing the cell potential, the upper limit ofαwas estimated by extrapolation as 1.013₅, which was expected to be obtained at the isotopic exchange equilibrium. This value is in fact close to the equilibrium data appeared in literatures. Possible mechanisms of the fractionation were discussed.
Right : Electrolytic fractionation of calcium isotopes was studied using a streaming mercury cathode in relation to the cell potential. Isotopic ratios, ⁴⁸Ca/⁴²Ca, were measured by a solid-source massspectrometer MS-5 manufactured by A.E.I., England. From the observed increasing tendency of the sepration factor, a^42-48;, with decreasing the cell potential, the upper limit ofαwas estimated by extrapolation as 1.013₅, which was expected to be obtained at the isotopic exchange equilibrium. This value is in fact close to the equilibrium data appeared in literatures. Possible mechanisms of the fractionation were discussed.

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a L. Perret, L. Rozand and E. Saito, NSA., 13, 7291(1959). b L. Perret, L. Rozandand E. Saito,“Second United Nations International Conference on the Peaceful Uses of Atomic Energy”, Vol. 4, 595(1958).
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Abstract

Electrolytic fractionation of calcium isotopes was studied using a streaming mercury cathode in relation to the cell potential. Isotopic ratios, ⁴⁸Ca/⁴²Ca, were measured by a solid-source massspectrometer MS-5 manufactured by A.E.I., England. From the observed increasing tendency of the sepration factor, a^42-48;, with decreasing the cell potential, the upper limit ofαwas estimated by extrapolation as 1.013₅, which was expected to be obtained at the isotopic exchange equilibrium. This value is in fact close to the equilibrium data appeared in literatures. Possible mechanisms of the fractionation were discussed.

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