The half-lives of 26m Al, 34 Cl, 38m K: Precision measurements with isotope-separated samples - INSPIRE

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The half-lives of 26m Al, 34 Cl, 38m K: Precision measurements with isotope-separated samples

1983

11 pages

Published in:

Nucl.Phys.A 405 (1983) 29-39

Published: 1983

DOI:

10.1016/0375-9474(83)90321-4

View in:

Nuclear Science References

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Abstract: (Elsevier)

The half-lives of 26m Al, 34 Cl and 38m K have been measured with isotopically pure samples prepared with an on-line isotope separator. Emitted β + particles were observed with a large-solid-angle, high-efficiency, low-background gas proportional counter, from which signals were multiscaled. The counting electronics had a well-defined non-extendable dead time. Each sample decay curve was individually corrected for dead time before being summed with other accumulated data, no pile-up corrections being necessary. The analysis procedure was tested on hypothetical data. The effect of contaminant isobars on the resultant half-lives has been investigated. Our half-life results are 26m Al : 6346.2 ± 2.6 ms, 34 Cl: 1527.7 ± 2.2 ms and 38m K: 924.2 ± 0.3 ms. The quote uncertainties include — for the first time — explicit provision for all possible contaminants.

Radioactivity

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