A custom-made integrated system for thermoluminescence and radioluminescence spectroscopy

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR Applied Radiation and Isotopes Pub Date : 2024-09-10 DOI:10.1016/j.apradiso.2024.111516

Matheus C.S. Nunes , Miguel L. Rodrigues , Walace J.R. Silva , Ronaldo S. Silva , Nancy K. Umisedo , Elisabeth M. Yoshimura , Neilo M. Trindade

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Abstract

Thermoluminescence (TL) and Radioluminescence (RL) are widely used in dosimetry applications. We present a custom-built integrated system, designated LUMI22, for measuring TL, TL spectroscopy, RL, and RL as a function of temperature. LUMI22 includes a heating system based on Kanthal® A1 alloy (FeCrAl), a microcontroller to regulate the temperature ramps (e.g. 1–5 °C/s). To irradiate samples an X-ray tube (Moxtek 50 kV, 50 μA) is powered, controlled, and monitored by an FTC-200 standard controller. The dose rate at the sample position is 0.43 Gy/min. Light collection includes a Photomultiplier Tube (PMT, Hamamatsu H10493-012:HA, 185–850 nm). Additionally, a miniature fiber optic spectrometer (Ocean Optics, QE65000, range 200–1100 nm) coupled with a 1000 μm diameter fiber optic (QP1000- 2-UV-VIS) was employed for TL and RL spectroscopy measurements. To assess the functionality of the system, it was used to measure TL and RL from Al₂O₃:C,Mg, Al₂O₃:C and TLD-100 phosphors which have been previously well investigated. The measured TL and RL data were well compared to the published ones, confirming the functionality of the system.

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用于热释光和辐射释光光谱的定制集成系统

热致发光（TL）和辐射致发光（RL）广泛应用于剂量测定。我们介绍了一种定制的集成系统，命名为 LUMI22，用于测量 TL、TL 光谱、RL 和 RL 随温度变化的函数。LUMI22 包括一个基于 Kanthal® A1 合金（FeCrAl）的加热系统和一个用于调节温度斜坡（例如 1-5 ℃/s）的微控制器。X 射线管（Moxtek 50 kV，50 μA）由 FTC-200 标准控制器供电、控制和监测，用于辐照样品。样品位置的剂量率为 0.43 Gy/分钟。光收集包括一个光电倍增管（PMT，Hamamatsu H10493-012:HA, 185-850 nm）。此外，微型光纤光谱仪（Ocean Optics，QE65000，200-1100 nm 范围）与直径为 1000 μm 的光纤（QP1000- 2-UV-VIS）耦合，用于 TL 和 RL 光谱测量。为了评估该系统的功能，我们用它来测量 Al2O3:C、Mg、Al2O3:C 和 TLD-100 荧光粉的 TL 和 RL，这些荧光粉以前都进行过深入研究。测得的 TL 和 RL 数据与已发表的数据进行了很好的比较，证实了该系统的功能。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.