The half-lives of 26mAl, 34Cl, 38mK: Precision measurements with isotope-separated samples
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The half-lives of 26mAl, 34Cl and 38mK have been measured with isotopically pure samples prepared with an on-line isotope separator. Emitted + 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 26mAl: 6346.2 2.6 ms, 34Cl: 1527.7 2.2 ms and 38mK: 924.2 0.3 ms. The quote uncertainties include - for the first time - explicit provision for all possible contaminants. 1983.
author list (cited authors)
Koslowsky, V. T., Hagberg, E., Hardy, J. C., Azuma, R. E., Clifford, E., Evans, H. C., ... Sharma, K. S.
complete list of authors
Koslowsky, VT||Hagberg, E||Hardy, JC||Azuma, RE||Clifford, ETH||Evans, HC||Schmeing, H||Schrewe, UJ||Sharma, KS