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Thermal Model Improvement in Phonon Detection Channels Using a Scintillating Crystal

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Title
Thermal Model Improvement in Phonon Detection Channels Using a Scintillating Crystal
Author(s)
Kyung Rae Woo; J. S. Chung; Dong Hyun Hwang; Jin A Jeon; Han Beom Kim; Hojong Kim; Hyelim Kim; Minbin Kim; Yong Hamb Kim; Yun Min Kim; D. H. Kwon; D. Y. Lee; Seunghun Lee; Yong Chang Lee; H. S. Lim
Publication Date
2024-05
Journal
Journal of Low Temperature Physics, v.215, pp.237 - 246
Publisher
Kluwer Academic/Plenum Publishers
Abstract
We present the development of a heat flow model utilizing a scintillating crystal for heat and light detection. By analyzing the measured light signals from alpha\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha$$\end{document}- and beta\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\beta$$\end{document}/gamma\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\gamma$$\end{document}-induced events in a CaMoO4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$_4$$\end{document} crystal, we describe the time-dependent behavior of the scintillation emission and the subsequent generation of delayed phonons in the crystal. The phonon detection channel model incorporates both prompt and delayed generation of a thermal phonons; these are absorbed in a phonon collector film on the crystal surface or converted into a thermal phonon distribution in the crystal. A reasonable agreement is observed in the comparison between the measured signals and the simulated signals derived from the model study. We attribute the observed pulse shape discrimination to the presence of the delayed phonons associated with the scintillation process.
URI
https://pr.ibs.re.kr/handle/8788114/15263
DOI
10.1007/s10909-024-03089-y
ISSN
0022-2291
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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