Braysher, E C; Russell, B; Arinc, A; Abilama, M; Shearman, R; Van Es, E; Ivanov, P; Read, D (2023) Application of inductively coupled plasma tandem mass spectrometry for re-measuring the half-life of long-lived radionuclides. In: 23rd International Conference on Radionuclide Metrology and its Applications (ICRM 2023), 26 - 31 March 2023, Bucharest, Romania.

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Abstract

Mass spectrometry is increasingly used for contributing to half-life determination through atom counting. Tandem inductively coupled plasma mass spectrometry (ICP-MS/MS) has demonstrated improved online interference removal for multiple radionuclides, but has not been applied to half-life measurements. This paper details the first known investigation of ICP-MS/MS for half-life measurement, focusing on 238U. The optimal setup, combined with Defined Solid Angle (DSA) measurement, calculated a half-life of 4.444 (55) × 109 a, in agreement with the current value of 4.468 (5) × 109 a. Further improvements in the instrument setup are recommended.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	Mass spectrometry, isotope dilution, half-life, atom counting, nuclear data
Subjects:	Ionising Radiation > Radioactivity
Divisions:	Atmospheric Environmental Sciences
Last Modified:	08 Oct 2025 14:37
URI:	https://eprintspublications.npl.co.uk/id/eprint/10240