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. 2025 Jun 24:61:111832.
doi: 10.1016/j.dib.2025.111832. eCollection 2025 Aug.

Timestamped list-mode data from coincidence γ-ray spectrometry with HPGe detectors on air-filter samples

Alf Göök  1 , Erik Andersson Sundén  2 , Peter Andersson  2 , Stefan Jarl-Holm  2 , Peter Jansson  1 , Catharina Söderström  1
Affiliations

Timestamped list-mode data from coincidence γ-ray spectrometry with HPGe detectors on air-filter samples

Alf Göök et al. Data Brief. .

Abstract

This data set contains raw timestamped list-mode data obtained using an array of HPGe detectors for the purpose of testing coincidence spectrometry in the context of measurement on air filter samples. Data from one air-sampling station managed by the Swedish Defense Research Agency (FOI) is made available. This air-sampling station is located in Umeå, Sweden (Latitude 63.85°N, Longitude 20.34°E, 46 m above sea level). In addition to the air filter sample, data from a blank filter as well as a filter that was spiked with a known activity of radionuclides is made available in this data set. The detector setup used to collect this data set is made up of five individual HPGe detectors, with one of them surrounded by an active BGO Compton suppression shield. The data set provides a testing ground for investigating the use of multi-fold coincidence spectrometry as a tool to lower the minimum detectable activity of anthropogenic radionuclides in air filter samples. Access to this data set allows researchers to explore and evaluate analysis methodologies for coincidence γ-ray spectrometry on real samples.

Keywords: Anti-Compton shielding; BGO detector; Gamma coincidence spectrometry; High purity germanium detector; Radionuclide monitoring.

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Figures

Fig 1
Fig. 1
Left: Photograph of the detector setup. Right: The setup annotated with sizes and distances in mm.
Fig 2
Fig. 2
Cross-section through the center of the sample of the experimental setup, as seen from above. Left: The dark grey cylindrical shape labelled sample represents the canister containing the filter sample. The four light grey shapes represent the four HPGe-detectors that were placed in the horizontal plane. All of these detectors were placed with the front face as close as possible to the sample canister. Right: The distance from the front face of HPGe-04 to the canister lid was 3.8 mm, the distance from the front face of HPGe-03 to the canister bottom was 0.15 mm, while the distances from the front faces of HPGe-01 and HPGe-02 to the center of the canister was 38.1 mm. Individual detector parameters are summarized in Table 2. In addition to the four HPGe detectors depicted in this figure, the detector labelled HPGe-05 was located above the centre of the sample canister, with its front towards it.
Fig 3
Fig. 3
Schematic coupling scheme of the electronics used in the data acquisition.
See this image and copyright information in PMC

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