Calcium isotope with mass 41 and the radioactive half-period of potassium

ABSTRACT CAREFUL determinations have been made of the atomic weight of calcium extracted from two very old potassium-rich deposits—one a felspar from Rhiconich, Sutherlandshire, estimated at

1,000 million years old, the other a pegmatite from Portsoy, Banffshire, probably about 600 million years old. Each mineral contained approximately 9 per cent K2O and less than 0.3 per cent

CaO, so that there seemed reasonable grounds for hope that the accumulation of the calcium isotope with mass 41, through the slow radioactive disintegration of the potassium in the deposit,

might be sufficient to induce a detectable change in the atomic weight from the normal value. Access through your institution Buy or subscribe This is a preview of subscription content,

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ATOM-TRAP TRACE ANALYSIS OF 41CA/CA DOWN TO THE 10–17 LEVEL Article 02 March 2023 ABSOLUTE 13C/12C ISOTOPE AMOUNT RATIO FOR VIENNA PEEDEE BELEMNITE FROM INFRARED ABSORPTION SPECTROSCOPY

Article 26 April 2021 REFERENCES * _Z. anorgan. Chem._, 195, 1 ; 1931. * _Ann. Rep. Chem. Soc._, 27, 310 ; 1930. Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Chemistry

Department, University, Edinburgh, JAMES KENDALL, WZLLIAM W. SMITH & THOMAS TAIT Authors * JAMES KENDALL View author publications You can also search for this author inPubMed Google

Scholar * WZLLIAM W. SMITH View author publications You can also search for this author inPubMed Google Scholar * THOMAS TAIT View author publications You can also search for this author

inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE KENDALL, J., SMITH, W. & TAIT, T. Calcium Isotope with Mass 41 and the

Radioactive Half-Period of Potassium. _Nature_ 131, 688–689 (1933). https://doi.org/10.1038/131688b0 Download citation * Issue Date: 13 May 1933 * DOI: https://doi.org/10.1038/131688b0 SHARE

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