Half-life andFtvalue of the superallowed positron decay of38Km

29 September 2000

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 62 (5) , 054302
https://doi.org/10.1103/physrevc.62.054302

Abstract

The measurement of the half-life of the superallowed positron decay of

^{38} K^{m}

has been studied with particular reference to possible systematic effects involved. A value of 924.4(6) ms has been found. A recommendation is made that certain earlier values are rejected, and that a mean lifetime of 924.24(27) ms is accepted. This leads to an

Ft

value of 3071.8(19) s, where the overwhelming contribution to the error comes from uncertainties in the electromagnetic corrections.

Keywords

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