Single source-based energy and efficiency calibration method for the assessment of an alpha imaging detector

An alpha imaging detector acquires a two-dimensional distribution of a sample that emits alpha particles. For the quantitative analysis of the image of an alpha-emitting sample, the individual energies of the alpha particles must be identified, which can be achieved using the spectrometric method af...

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Bibliographic Details
Published in:Journal of instrumentation 2021-12, Vol.16 (12), p.C12017
Main Authors: Kim, G., Lim, I., Kim, B., Song, K., Kim, J.-G.
Format: Article
Language:English
Subjects:
Alpha particles
Alpha rays
Calibration
Detector alignment and calibration methods (lasers, sources, particle-beams)
Detector design and construction technologies and materials
Efficiency
Energy dissipation
Energy resolution
Evaluation
Image acquisition
Quantitative analysis
Sensors
Spectrometry
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Summary:An alpha imaging detector acquires a two-dimensional distribution of a sample that emits alpha particles. For the quantitative analysis of the image of an alpha-emitting sample, the individual energies of the alpha particles must be identified, which can be achieved using the spectrometric method after detector calibration. In this study, an energy and efficiency calibration method was investigated to assess an alpha imaging detector. The calibration was performed using a single standard source of Am-241 based on the energy loss characteristic of an alpha particle. The feasibility of the calibration method was evaluated using another source, Ac-225. The calibrated alpha imaging detector was evaluated in terms of energy resolution and detection efficiency, and the alpha imaging detector was found to be efficiently calibrated using a single standard source. The calibrated alpha imaging detector appears promising for the quantitative analysis of samples that emit alpha particles.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/16/12/C12017