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Argon^(40):Potassium^(40) Dating

Wasserburg, Gerald J. (1954) Argon^(40):Potassium^(40) Dating. In: Nuclear geology; a symposium on nuclear phenomena in the earth sciences. Wiley , New York, pp. 341-354. http://resolver.caltech.edu/CaltechAUTHORS:20141002-134957051

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Abstract

The element potassium has three naturally occurring isotopes, potassium^(39), potassium^(40), and potassium^(41), with atomic abundances of 93.08, 0.0119, and 6.9, respectively (Nier, 1950). Of these, potassium^(40) is radioactive with a decay constant λ = 0.55 X 10^(-9) year^(-1) (see Birch, 1951; Burch, 1953). Potassium^(40) decays by K-electron capture to argon^(40) with the emission of a gamma and by beta emission to calcium^(40) (see Figure 3.1).


Item Type:Book Section
Additional Information:© 1954 John Wiley & Sons, Inc.
Record Number:CaltechAUTHORS:20141002-134957051
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141002-134957051
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50179
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:09 Oct 2014 23:03
Last Modified:09 Oct 2014 23:03

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