Discrete convolution-based energy spectrum configuring method for the analysis of the intrinsic radiation of176 lu

Kilyoung Ko, Hyunwoong Choi, Yongsun Yi, Wonku Kim, Junhyeok Kim, Jisung Hwang, Eunbie Ko, Gyuseong Cho

    Research output: Contribution to journalArticlepeer-review

    2 Scopus citations

    Abstract

    There has been considerable interest in inorganic scintillators based on lutetium due to their favorable physical properties. Despite their advantages, lutetium-based scintillators could face issues because of the natural occurring radioisotope of176Lu that is contained in natural lutetium. In order to mitigate its potential shortcomings, previous works have studied to understand the energy spectrum of the intrinsic radiation of176Lu (IRL). However, few studies have focused on the various principal types of photon interactions with matter; in other words, only the full-energy peak accord-ing to the photoelectric effect or internal conversion have been considered for understanding the energy spectrum of IRL. Thus, the approach we have used in this study considers other principal types of photon interactions by convoluting each energy spectrum with combinations for generating the spectrum of the intrinsic radiation of176Lu. From the results, we confirm that the method pro-vides good agreement with the experiment. A significant contribution of this study is the provision of a new approach to process energy spectra induced by mutually independent radiation interactions as a single spectrum.

    Original languageBritish English
    Article number7040
    JournalSensors (Switzerland)
    Volume21
    Issue number21
    DOIs
    StatePublished - 1 Nov 2021

    Keywords

    • Cascade gamma rays
    • Genetic algorithm
    • Intrinsic radiation
    • Lutetium-based scintillator
    • Silicon photomulti-plier
    • Spectrum convolution

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