The Orifice Correction for K-Ar Dating
- 1 September 1973
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Earth Sciences
- Vol. 10 (9) , 1410-1414
- https://doi.org/10.1139/e73-131
Abstract
When admitting gas or isotope mixtures under molecular flow conditions into a mass spectrometer for static analysis, fractionation and back diffusion occur unless equilibrium is reached. To account for this, a theoretical 'orifice correction factor' has been developed. Experimental evidence of its validity, especially in respect to K-Ar dating, is given.Keywords
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