Homogeneity and stability assessment of a spinach-ash 90Sr test sample by 85Sr γ tracing

This dataset contains the original gamma spectrometric measurement data collected for a spinach-ash 90Sr test sample prepared with 85Sr as a tracer radionuclide. The data document measurements made during the homogeneity and stability study of the prepared test sample. Recorded fields include sample identifiers or measurement dates, replicate measurement numbers, sample mass, and the net peak count rate of the 85Sr 514 keV photopeak. The measurements were obtained with a well-type HPGe gamma spectrometer under fixed counting geometry after preparation of the test sample by a two-stage mixing procedure. For homogeneity testing, 10 subsamples of about 1 g were measured, with three replicate measurements for each subsample. For stability testing, a newly taken subsample of about 1 g was measured at each scheduled date, with three replicate measurements per subsample. These raw data provide the original measurement records used to document sample-to-sample and time-to-time measurement results for the prepared spinach-ash test sample.