Journal
APPLIED RADIATION AND ISOTOPES
Volume 168, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2020.109484
Keywords
Calibration; Particle detector; Beta particle; Radioactive isotope
Categories
Funding
- BK21 plus program through the National Research Foundation (NRF), Republic of Korea - Ministry of Education of Korea [20190633]
Ask authors/readers for more resources
An improved method for energy calibration of particle detectors is presented in this study, which utilizes both the discrete and continuous spectra from the conversion electrons and beta particles of a radioisotope of Cs-137. By fitting model functions to the measurements, the instrument response, energy scale, and energy resolution can be derived, including determination of the DC-offset and non-linearity of the instrument. This method provides a broader energy range for calibration compared to conventional methods.
An improved method for energy calibration of particle detectors is presented utilizing both the discrete and continuous spectra from the conversion electrons and beta particles of a radioisotope of Cs-137. This method considers the instrument response against the discrete spectrum from the conversion electrons at 624.22 keV and the continuous spectrum from the beta particles emitted by the unique first forbidden transition in the energy range of approximately 120-513 keV. The instrument response is determined by fitting model functions to the measurements, from which the energy scale and energy resolution of the instrument are derived. Inclusion of the beta particles in this method enables a determination of the energy scale in a broader energy range as well as the DC-offset and non-linearity of the instrument. This is an improvement from the conventional method that only utilizes a mono-energetic peak from the conversion electrons. A detailed description of the procedure is provided, from constructing the model functions to determining the instrument response. Results of the method, as successfully applied to a space-borne instrument, are provided to demonstrate the method.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available