Ko Kilyoung, Choi Hyunwoong, Yi Yongsun, Kim Wonku, Kim Junhyeok, Hwang Jisung, Ko Eunbie, Cho Gyuseong
Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea.
Department of Nuclear Engineering, Khalifa University of Science Technology and Research, Abu Dhabi P.O. Box 127788, United Arab Emirates.
Sensors (Basel). 2021 Oct 23;21(21):7040. doi: 10.3390/s21217040.
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 of Lu 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 of Lu (IRL). However, few studies have focused on the various principal types of photon interactions with matter; in other words, only the full-energy peak according 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 of Lu. From the results, we confirm that the method provides 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.
由于其良好的物理性质，基于镥的无机闪烁体引起了人们的广泛关注。尽管镥基闪烁体具有诸多优点，但由于天然镥中所含的镥的天然放射性同位素，它们可能会面临一些问题。为了减轻其潜在的缺点，以往的研究致力于了解镥的本征辐射（IRL）能谱。然而，很少有研究关注光子与物质相互作用的各种主要类型；换句话说，在理解IRL能谱时，仅考虑了基于光电效应或内转换的全能峰。因此，我们在本研究中采用的方法通过将每个能谱与各种组合进行卷积来考虑光子相互作用的其他主要类型，从而生成镥的本征辐射能谱。从结果来看，我们证实该方法与实验结果吻合良好。本研究的一个重要贡献是提供了一种新方法，可将由相互独立的辐射相互作用诱导的能谱作为单一能谱进行处理。
