Evidence for a New Isotope of Potassium

Roy Overstreet; Louis Jacobson; P. R. Stout

doi:10.1103/PhysRev.75.231

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Evidence for a New Isotope of Potassium

Roy Overstreet^*, Louis Jacobson^†, and P. R. Stout^‡

Agricultural Experiment Station, University of California, Berkeley, California

^*Associate Professor of Soil Chemistry and Associate Soil Chemist in the Agricultural Experiment Station, University of California.
^†Assistant Professor of Plant Nutrition and Assistant Plant Biochemist in the Agricultural Experiment Station, University of California.
^‡Associate Professor of Plant Nutrition and Associate Chemist in the Agricultural Experiment Station, University of California.

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Phys. Rev. 75, 231 – Published 15 January, 1949

DOI: https://doi.org/10.1103/PhysRev.75.231

Abstract

A study of the potassium isotopes produced by the bombardment of argon with helium ions reveals the presence of a hitherto unknown isotope with a 22.4 hour half-life. The new potassium isotope has two beta-components of approximately 0.25-Mev and 0.8-Mev maximum energies. A gamma-component is present of roughly 0.4-Mev energy. The evidence strongly suggests that the isotope in question is $K^{43}$ produced by the reaction $A^{40} (α, p) K^{43}$ .

References (3)

Roy Overstreet and Louis Jacobson, Phys. Rev. 72, 349 (1947)
A. A. Noyes and W C. Bray, Qualitative Analysis for the Rare Elements (The Macmillan Company, New York, 1927), pp. 260-267
Kai Siegbahn, Ark. f. mat., astr. o. fysik 34B, No. 4, 1 (1947)

[c1] Roy Overstreet and Louis Jacobson, Phys. Rev. 72, 349 (1947)

[c2] A. A. Noyes and W C. Bray, Qualitative Analysis for the Rare Elements (The Macmillan Company, New York, 1927), pp. 260-267

[c3] Kai Siegbahn, Ark. f. mat., astr. o. fysik 34B, No. 4, 1 (1947)

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Evidence for a New Isotope of Potassium

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