Abstract
The decay curve of short-lived radioisotopes (T<1 min), if registered by a multichannel analyzer in multiscaler mode, does not remain exponential when the counting rate increases. A method for adjusting experimental values by the maximum of likelihood function is proposed. It includes the determination of initial dead-time fraction. The half-lives of179mHf and46mSc determined by the present method show a good concordance with table data, for initial dead time fractions as high as 80%.
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Bibliographie
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Beeler, R., Balsenc, L. & Laplace, J. Methode de mesure de la periode d'un corps radioactif de courte vie application au179mHf et au46mSc. J. Radioanal. Chem. 10, 257–266 (1972). https://doi.org/10.1007/BF02530253
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DOI: https://doi.org/10.1007/BF02530253