Analytical model for designing a high-energy-efficiency granular double-layer X-ray scintillator with a diffuse reflection layer

Jookwon Song, Hyeon Bo Shim, Jae Won Hahn

Research output: Contribution to journalArticle

Abstract

We propose a simple, efficient, and accurate analytical model for calculating the energy efficiency of a granular double-layer X-ray scintillator with a diffuse reflection layer, based on the first-order approximation of the radiative transfer equation by considering boundary conditions and exponential characteristics. Using the analytical model, we successfully analyze the characteristics of the double-layer X-ray scintillator, such as diffuse reflectance, transmittance, collection efficiency, and energy efficiency. We also suggest a design strategy for the high-energy-efficiency X-ray double-layer scintillator considering high diffuse reflectance and satisfaction of the target spatial resolution. Using the X-ray absorption ratio and the collection efficiency of the double-layer scintillator, the energy efficiency of the double-layer X-ray scintillator is calculated to achieve the best performance in terms of image brightness. Through calculation, we obtain the design of a double-layer X-ray scintillator with an energy efficiency of 8.7% with a computation time of less than a second.

Original languageEnglish
Pages (from-to)21642-21655
Number of pages14
JournalOptics Express
Volume26
Issue number17
DOIs
Publication statusPublished - 2018 Aug 20

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scintillation counters
x rays
energy
reflectance
radiative transfer
transmittance
brightness
spatial resolution
boundary conditions
approximation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

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title = "Analytical model for designing a high-energy-efficiency granular double-layer X-ray scintillator with a diffuse reflection layer",
abstract = "We propose a simple, efficient, and accurate analytical model for calculating the energy efficiency of a granular double-layer X-ray scintillator with a diffuse reflection layer, based on the first-order approximation of the radiative transfer equation by considering boundary conditions and exponential characteristics. Using the analytical model, we successfully analyze the characteristics of the double-layer X-ray scintillator, such as diffuse reflectance, transmittance, collection efficiency, and energy efficiency. We also suggest a design strategy for the high-energy-efficiency X-ray double-layer scintillator considering high diffuse reflectance and satisfaction of the target spatial resolution. Using the X-ray absorption ratio and the collection efficiency of the double-layer scintillator, the energy efficiency of the double-layer X-ray scintillator is calculated to achieve the best performance in terms of image brightness. Through calculation, we obtain the design of a double-layer X-ray scintillator with an energy efficiency of 8.7{\%} with a computation time of less than a second.",
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Analytical model for designing a high-energy-efficiency granular double-layer X-ray scintillator with a diffuse reflection layer. / Song, Jookwon; Shim, Hyeon Bo; Hahn, Jae Won.

In: Optics Express, Vol. 26, No. 17, 20.08.2018, p. 21642-21655.

Research output: Contribution to journalArticle

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